diff --git a/bitchat.xcodeproj/project.pbxproj b/bitchat.xcodeproj/project.pbxproj
index acb41262..d010c13a 100644
--- a/bitchat.xcodeproj/project.pbxproj
+++ b/bitchat.xcodeproj/project.pbxproj
@@ -173,6 +173,10 @@
 		F455F011B3B648ADA233F998 /* BinaryProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = A2136C3E22D02D4A8DBE7EAB /* BinaryProtocol.swift */; };
 		FB8819B4C84FAFEF5C36B216 /* KeychainManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 136696FC4436A02D98CE6A77 /* KeychainManager.swift */; };
 		FBC409E105493C491531B59A /* NostrProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2E5A9FF4AEA8A923317ED26A /* NostrProtocol.swift */; };
+ 		A1B2C3D4E5F60123456789BA /* MockKeychain.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1B2C3D4E5F60123456789AA /* MockKeychain.swift */; };
+ 		A1B2C3D4E5F60123456789BB /* MockKeychain.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1B2C3D4E5F60123456789AA /* MockKeychain.swift */; };
+ 		A1B2C3D4E5F60123456789BC /* MockIdentityManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1B2C3D4E5F60123456789AB /* MockIdentityManager.swift */; };
+ 		A1B2C3D4E5F60123456789BD /* MockIdentityManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1B2C3D4E5F60123456789AB /* MockIdentityManager.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -307,6 +311,8 @@
 		FC75901A0F0073B5BB8356E7 /* TestConstants.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = TestConstants.swift; sourceTree = "<group>"; };
 		FDC18D910D6FF2E8B1B6C885 /* SecureIdentityStateManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecureIdentityStateManager.swift; sourceTree = "<group>"; };
 		FE7CCF2BD78A3F3DAE6DA145 /* MockBLEService.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockBLEService.swift; sourceTree = "<group>"; };
+		A1B2C3D4E5F60123456789AA /* MockKeychain.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockKeychain.swift; sourceTree = "<group>"; };
+		A1B2C3D4E5F60123456789AB /* MockIdentityManager.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MockIdentityManager.swift; sourceTree = "<group>"; };
 		FF7AF93D874001FBD94C8306 /* bitchat-macOS.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = "bitchat-macOS.entitlements"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
@@ -464,6 +470,8 @@
 			children = (
 				C27328EE574221395B2B8E87 /* MockBluetoothMeshService.swift */,
 				FE7CCF2BD78A3F3DAE6DA145 /* MockBLEService.swift */,
+				A1B2C3D4E5F60123456789AA /* MockKeychain.swift */,
+				A1B2C3D4E5F60123456789AB /* MockIdentityManager.swift */,
 			);
 			path = Mocks;
 			sourceTree = "<group>";
@@ -949,6 +957,8 @@
 				047502932E547ACC0083520F /* LocationChannelsTests.swift in Sources */,
 				048A4C2B2E5FCE0300162C4A /* GeohashBookmarksStoreTests.swift in Sources */,
 				6C803BF930E7E19BE6E99EAA /* MockBLEService.swift in Sources */,
+				A1B2C3D4E5F60123456789BB /* MockKeychain.swift in Sources */,
+				A1B2C3D4E5F60123456789BD /* MockIdentityManager.swift in Sources */,
 				765254F56997F01054699AC0 /* NoiseProtocolTests.swift in Sources */,
 				968181D255CA7A804340B4DA /* NostrProtocolTests.swift in Sources */,
 				ED83C7AC1E6BEF15389C0132 /* PrivateChatE2ETests.swift in Sources */,
@@ -973,6 +983,9 @@
 				047502922E547ACC0083520F /* LocationChannelsTests.swift in Sources */,
 				048A4C2C2E5FCE0300162C4A /* GeohashBookmarksStoreTests.swift in Sources */,
 				3849CA6D99B2D536636DF4A6 /* MockBLEService.swift in Sources */,
+				A1B2C3D4E5F60123456789BA /* MockKeychain.swift in Sources */,
+
+				A1B2C3D4E5F60123456789BC /* MockIdentityManager.swift in Sources */,
 				BC4DC75F4FB823FF40569676 /* NoiseProtocolTests.swift in Sources */,
 				EE8C3ECADAB3083A2687D50B /* NostrProtocolTests.swift in Sources */,
 				0AE840940F21AFC07C226636 /* PrivateChatE2ETests.swift in Sources */,
diff --git a/bitchat/BitchatApp.swift b/bitchat/BitchatApp.swift
index db060dcb..812f738f 100644
--- a/bitchat/BitchatApp.swift
+++ b/bitchat/BitchatApp.swift
@@ -11,7 +11,7 @@ import UserNotifications
 
 @main
 struct BitchatApp: App {
-    @StateObject private var chatViewModel = ChatViewModel()
+    @StateObject private var chatViewModel: ChatViewModel
     #if os(iOS)
     @Environment(\.scenePhase) var scenePhase
     @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
@@ -23,6 +23,14 @@ struct BitchatApp: App {
     #endif
     
     init() {
+        let keychain = KeychainManager()
+        _chatViewModel = StateObject(
+            wrappedValue: ChatViewModel(
+                keychain: keychain,
+                identityManager: SecureIdentityStateManager(keychain)
+            )
+        )
+        
         UNUserNotificationCenter.current().delegate = NotificationDelegate.shared
         // Warm up georelay directory and refresh if stale (once/day)
         GeoRelayDirectory.shared.prefetchIfNeeded()
diff --git a/bitchat/Identity/SecureIdentityStateManager.swift b/bitchat/Identity/SecureIdentityStateManager.swift
index 2fda9a2d..2b0aaab8 100644
--- a/bitchat/Identity/SecureIdentityStateManager.swift
+++ b/bitchat/Identity/SecureIdentityStateManager.swift
@@ -93,13 +93,51 @@
 import Foundation
 import CryptoKit
 
+protocol SecureIdentityStateManagerProtocol {
+    // MARK: Secure Loading/Saving
+    func forceSave()
+    
+    // MARK: Social Identity Management
+    func getSocialIdentity(for fingerprint: String) -> SocialIdentity?
+    
+    // MARK: Cryptographic Identities
+    func upsertCryptographicIdentity(fingerprint: String, noisePublicKey: Data, signingPublicKey: Data?, claimedNickname: String?)
+    func getCryptoIdentitiesByPeerIDPrefix(_ peerID: String) -> [CryptographicIdentity]
+    func updateSocialIdentity(_ identity: SocialIdentity)
+    
+    // MARK: Favorites Management
+    func getFavorites() -> Set<String>
+    func setFavorite(_ fingerprint: String, isFavorite: Bool)
+    func isFavorite(fingerprint: String) -> Bool
+    
+    // MARK: Blocked Users Management
+    func isBlocked(fingerprint: String) -> Bool
+    func setBlocked(_ fingerprint: String, isBlocked: Bool)
+    
+    // MARK: Geohash (Nostr) Blocking
+    func isNostrBlocked(pubkeyHexLowercased: String) -> Bool
+    func setNostrBlocked(_ pubkeyHexLowercased: String, isBlocked: Bool)
+    func getBlockedNostrPubkeys() -> Set<String>
+    
+    // MARK: Ephemeral Session Management
+    func registerEphemeralSession(peerID: String, handshakeState: HandshakeState)
+    func updateHandshakeState(peerID: String, state: HandshakeState)
+    
+    // MARK: Cleanup
+    func clearAllIdentityData()
+    func removeEphemeralSession(peerID: String)
+    
+    // MARK: Verification
+    func setVerified(fingerprint: String, verified: Bool)
+    func isVerified(fingerprint: String) -> Bool
+    func getVerifiedFingerprints() -> Set<String>
+}
+
 /// Singleton manager for secure identity state persistence and retrieval.
 /// Provides thread-safe access to identity mappings with encryption at rest.
 /// All identity data is stored encrypted in the device Keychain for security.
-final class SecureIdentityStateManager {
-    static let shared = SecureIdentityStateManager()
-    
-    private let keychain = KeychainManager.shared
+final class SecureIdentityStateManager: SecureIdentityStateManagerProtocol {
+    private let keychain: KeychainManagerProtocol
     private let cacheKey = "bitchat.identityCache.v2"
     private let encryptionKeyName = "identityCacheEncryptionKey"
     
@@ -108,9 +146,6 @@ final class SecureIdentityStateManager {
     private var cryptographicIdentities: [String: CryptographicIdentity] = [:]
     private var cache: IdentityCache = IdentityCache()
     
-    // Pending actions before handshake
-    private var pendingActions: [String: PendingActions] = [:]
-    
     // Thread safety
     private let queue = DispatchQueue(label: "bitchat.identity.state", attributes: .concurrent)
     
@@ -122,7 +157,9 @@ final class SecureIdentityStateManager {
     // Encryption key
     private let encryptionKey: SymmetricKey
     
-    private init() {
+    init(_ keychain: KeychainManagerProtocol) {
+        self.keychain = keychain
+        
         // Generate or retrieve encryption key from keychain
         let loadedKey: SymmetricKey
         
@@ -146,9 +183,13 @@ final class SecureIdentityStateManager {
         loadIdentityCache()
     }
     
+    deinit {
+        forceSave()
+    }
+    
     // MARK: - Secure Loading/Saving
     
-    func loadIdentityCache() {
+    private func loadIdentityCache() {
         guard let encryptedData = keychain.getIdentityKey(forKey: cacheKey) else {
             // No existing cache, start fresh
             return
@@ -164,12 +205,7 @@ final class SecureIdentityStateManager {
         }
     }
     
-    deinit {
-        // Force save any pending changes
-        forceSave()
-    }
-    
-    func saveIdentityCache() {
+    private func saveIdentityCache() {
         // Mark that we need to save
         pendingSave = true
         
@@ -201,25 +237,7 @@ final class SecureIdentityStateManager {
     // Force immediate save (for app termination)
     func forceSave() {
         saveTimer?.invalidate()
-        if pendingSave {
-            performSave()
-        }
-    }
-    
-    // MARK: - Identity Resolution
-    
-    func resolveIdentity(peerID: String, claimedNickname: String) -> IdentityHint {
-        queue.sync {
-            // Check if we have candidates based on nickname
-            if let fingerprints = cache.nicknameIndex[claimedNickname] {
-                if fingerprints.count == 1 {
-                    return .likelyKnown(fingerprint: fingerprints.first!)
-                } else {
-                    return .ambiguous(candidates: fingerprints)
-                }
-            }
-            return .unknown
-        }
+        performSave()
     }
     
     // MARK: - Social Identity Management
@@ -301,11 +319,6 @@ final class SecureIdentityStateManager {
         }
     }
 
-    /// Retrieve cryptographic identity by fingerprint
-    func getCryptographicIdentity(for fingerprint: String) -> CryptographicIdentity? {
-        queue.sync { cryptographicIdentities[fingerprint] }
-    }
-
     /// Find cryptographic identities whose fingerprint prefix matches a peerID (16-hex) short ID
     func getCryptoIdentitiesByPeerIDPrefix(_ peerID: String) -> [CryptographicIdentity] {
         queue.sync {
@@ -315,12 +328,6 @@ final class SecureIdentityStateManager {
         }
     }
     
-    func getAllSocialIdentities() -> [SocialIdentity] {
-        queue.sync {
-            return Array(cache.socialIdentities.values)
-        }
-    }
-    
     func updateSocialIdentity(_ identity: SocialIdentity) {
         queue.async(flags: .barrier) {
             self.cache.socialIdentities[identity.fingerprint] = identity
@@ -469,53 +476,6 @@ final class SecureIdentityStateManager {
         }
     }
     
-    func getHandshakeState(peerID: String) -> HandshakeState? {
-        queue.sync {
-            return ephemeralSessions[peerID]?.handshakeState
-        }
-    }
-    
-    // MARK: - Pending Actions
-    
-    func setPendingAction(peerID: String, action: PendingActions) {
-        queue.async(flags: .barrier) {
-            self.pendingActions[peerID] = action
-        }
-    }
-    
-    func applyPendingActions(peerID: String, fingerprint: String) {
-        queue.async(flags: .barrier) {
-            guard let actions = self.pendingActions[peerID] else { return }
-            
-            // Get or create social identity
-            var identity = self.cache.socialIdentities[fingerprint] ?? SocialIdentity(
-                fingerprint: fingerprint,
-                localPetname: nil,
-                claimedNickname: "Unknown",
-                trustLevel: .unknown,
-                isFavorite: false,
-                isBlocked: false,
-                notes: nil
-            )
-            
-            // Apply pending actions
-            if let toggleFavorite = actions.toggleFavorite {
-                identity.isFavorite = toggleFavorite
-            }
-            if let trustLevel = actions.setTrustLevel {
-                identity.trustLevel = trustLevel
-            }
-            if let petname = actions.setPetname {
-                identity.localPetname = petname
-            }
-            
-            // Save updated identity
-            self.cache.socialIdentities[fingerprint] = identity
-            self.pendingActions.removeValue(forKey: peerID)
-            self.saveIdentityCache()
-        }
-    }
-    
     // MARK: - Cleanup
     
     func clearAllIdentityData() {
@@ -525,7 +485,6 @@ final class SecureIdentityStateManager {
             self.cache = IdentityCache()
             self.ephemeralSessions.removeAll()
             self.cryptographicIdentities.removeAll()
-            self.pendingActions.removeAll()
             
             // Delete from keychain
             let deleted = self.keychain.deleteIdentityKey(forKey: self.cacheKey)
@@ -536,7 +495,6 @@ final class SecureIdentityStateManager {
     func removeEphemeralSession(peerID: String) {
         queue.async(flags: .barrier) {
             self.ephemeralSessions.removeValue(forKey: peerID)
-            self.pendingActions.removeValue(forKey: peerID)
         }
     }
     
diff --git a/bitchat/Noise/NoiseProtocol.swift b/bitchat/Noise/NoiseProtocol.swift
index c40e3c5c..838599fd 100644
--- a/bitchat/Noise/NoiseProtocol.swift
+++ b/bitchat/Noise/NoiseProtocol.swift
@@ -490,6 +490,7 @@ final class NoiseSymmetricState {
 final class NoiseHandshakeState {
     private let role: NoiseRole
     private let pattern: NoisePattern
+    private let keychain: KeychainManagerProtocol
     private var symmetricState: NoiseSymmetricState
     
     // Keys
@@ -505,9 +506,16 @@ final class NoiseHandshakeState {
     private var messagePatterns: [[NoiseMessagePattern]] = []
     private var currentPattern = 0
     
-    init(role: NoiseRole, pattern: NoisePattern, localStaticKey: Curve25519.KeyAgreement.PrivateKey? = nil, remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil) {
+    init(
+        role: NoiseRole,
+        pattern: NoisePattern,
+        keychain: KeychainManagerProtocol,
+        localStaticKey: Curve25519.KeyAgreement.PrivateKey? = nil,
+        remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil
+    ) {
         self.role = role
         self.pattern = pattern
+        self.keychain = keychain
         
         // Initialize static keys
         if let localKey = localStaticKey {
@@ -578,7 +586,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
                 
             case .es:
                 // DH(ephemeral, static) - direction depends on role
@@ -626,7 +634,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
             }
         }
         
@@ -714,7 +722,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
             } else {
                 guard let localStatic = localStaticPrivate,
                       let remoteEphemeral = remoteEphemeralPublic else {
@@ -724,7 +732,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
             }
             
         case .se:
@@ -737,7 +745,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
             } else {
                 guard let localEphemeral = localEphemeralPrivate,
                       let remoteStatic = remoteStaticPublic else {
@@ -747,7 +755,7 @@ final class NoiseHandshakeState {
                 var sharedData = shared.withUnsafeBytes { Data($0) }
                 symmetricState.mixKey(sharedData)
                 // Clear sensitive shared secret
-                KeychainManager.secureClear(&sharedData)
+                keychain.secureClear(&sharedData)
             }
             
         case .ss:
diff --git a/bitchat/Noise/NoiseSession.swift b/bitchat/Noise/NoiseSession.swift
index 3e654c65..bc8b58d1 100644
--- a/bitchat/Noise/NoiseSession.swift
+++ b/bitchat/Noise/NoiseSession.swift
@@ -36,6 +36,7 @@ enum NoiseSessionState: Equatable {
 class NoiseSession {
     let peerID: String
     let role: NoiseRole
+    private let keychain: KeychainManagerProtocol
     private var state: NoiseSessionState = .uninitialized
     private var handshakeState: NoiseHandshakeState?
     private var sendCipher: NoiseCipherState?
@@ -52,9 +53,16 @@ class NoiseSession {
     // Thread safety
     private let sessionQueue = DispatchQueue(label: "chat.bitchat.noise.session", attributes: .concurrent)
     
-    init(peerID: String, role: NoiseRole, localStaticKey: Curve25519.KeyAgreement.PrivateKey, remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil) {
+    init(
+        peerID: String,
+        role: NoiseRole,
+        keychain: KeychainManagerProtocol,
+        localStaticKey: Curve25519.KeyAgreement.PrivateKey,
+        remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil
+    ) {
         self.peerID = peerID
         self.role = role
+        self.keychain = keychain
         self.localStaticKey = localStaticKey
         self.remoteStaticPublicKey = remoteStaticKey
     }
@@ -71,6 +79,7 @@ class NoiseSession {
             handshakeState = NoiseHandshakeState(
                 role: role,
                 pattern: .XX,
+                keychain: keychain,
                 localStaticKey: localStaticKey,
                 remoteStaticKey: nil
             )
@@ -98,6 +107,7 @@ class NoiseSession {
                 handshakeState = NoiseHandshakeState(
                     role: role,
                     pattern: .XX,
+                    keychain: keychain,
                     localStaticKey: localStaticKey,
                     remoteStaticKey: nil
                 )
@@ -230,13 +240,13 @@ class NoiseSession {
             // Clear sent handshake messages
             for i in 0..<sentHandshakeMessages.count {
                 var message = sentHandshakeMessages[i]
-                KeychainManager.secureClear(&message)
+                keychain.secureClear(&message)
             }
             sentHandshakeMessages.removeAll()
             
             // Clear handshake hash
             if var hash = handshakeHash {
-                KeychainManager.secureClear(&hash)
+                keychain.secureClear(&hash)
             }
             handshakeHash = nil
             
@@ -252,14 +262,16 @@ class NoiseSession {
 final class NoiseSessionManager {
     private var sessions: [String: NoiseSession] = [:]
     private let localStaticKey: Curve25519.KeyAgreement.PrivateKey
+    private let keychain: KeychainManagerProtocol
     private let managerQueue = DispatchQueue(label: "chat.bitchat.noise.manager", attributes: .concurrent)
     
     // Callbacks
     var onSessionEstablished: ((String, Curve25519.KeyAgreement.PublicKey) -> Void)?
     var onSessionFailed: ((String, Error) -> Void)?
     
-    init(localStaticKey: Curve25519.KeyAgreement.PrivateKey) {
+    init(localStaticKey: Curve25519.KeyAgreement.PrivateKey, keychain: KeychainManagerProtocol) {
         self.localStaticKey = localStaticKey
+        self.keychain = keychain
     }
     
     // MARK: - Session Management
@@ -269,6 +281,7 @@ final class NoiseSessionManager {
             let session = SecureNoiseSession(
                 peerID: peerID,
                 role: role,
+                keychain: keychain,
                 localStaticKey: localStaticKey
             )
             sessions[peerID] = session
@@ -320,6 +333,7 @@ final class NoiseSessionManager {
             let session = SecureNoiseSession(
                 peerID: peerID,
                 role: .initiator,
+                keychain: keychain,
                 localStaticKey: localStaticKey
             )
             sessions[peerID] = session
@@ -370,6 +384,7 @@ final class NoiseSessionManager {
                 let newSession = SecureNoiseSession(
                     peerID: peerID,
                     role: .responder,
+                    keychain: keychain,
                     localStaticKey: localStaticKey
                 )
                 sessions[peerID] = newSession
diff --git a/bitchat/Services/BLEService.swift b/bitchat/Services/BLEService.swift
index 6d44a94c..509dbd6f 100644
--- a/bitchat/Services/BLEService.swift
+++ b/bitchat/Services/BLEService.swift
@@ -88,7 +88,8 @@ final class BLEService: NSObject {
     
     var myPeerID: String = ""
     var myNickname: String = "anon"
-    private let noiseService = NoiseEncryptionService()
+    private let noiseService: NoiseEncryptionService
+    private let identityManager: SecureIdentityStateManagerProtocol
     private var myPeerIDData: Data = Data()
 
     // MARK: - Advertising Privacy
@@ -325,7 +326,9 @@ final class BLEService: NSObject {
         }
     }
     
-    override init() {
+    init(keychain: KeychainManagerProtocol, identityManager: SecureIdentityStateManagerProtocol) {
+        noiseService = NoiseEncryptionService(keychain: keychain)
+        self.identityManager = identityManager
         super.init()
         
         // Derive stable peer ID from Noise static public key fingerprint (first 8 bytes → 16 hex chars)
@@ -1548,7 +1551,7 @@ final class BLEService: NSObject {
             // Derive fingerprint from Noise public key
             let hash = SHA256.hash(data: announcement.noisePublicKey)
             let fingerprint = hash.map { String(format: "%02x", $0) }.joined()
-            SecureIdentityStateManager.shared.upsertCryptographicIdentity(
+            identityManager.upsertCryptographicIdentity(
                 fingerprint: fingerprint,
                 noisePublicKey: announcement.noisePublicKey,
                 signingPublicKey: announcement.signingPublicKey,
@@ -1630,13 +1633,13 @@ final class BLEService: NSObject {
             // Fallback: verify signature using persisted signing key for this peerID's fingerprint prefix
             if let signature = packet.signature, let packetData = packet.toBinaryDataForSigning() {
                 // Find candidate identities by peerID prefix (16 hex)
-                let candidates = SecureIdentityStateManager.shared.getCryptoIdentitiesByPeerIDPrefix(peerID)
+                let candidates = identityManager.getCryptoIdentitiesByPeerIDPrefix(peerID)
                 for candidate in candidates {
                     if let signingKey = candidate.signingPublicKey,
                        noiseService.verifySignature(signature, for: packetData, publicKey: signingKey) {
                         accepted = true
                         // Prefer persisted social petname or claimed nickname
-                        if let social = SecureIdentityStateManager.shared.getSocialIdentity(for: candidate.fingerprint) {
+                        if let social = identityManager.getSocialIdentity(for: candidate.fingerprint) {
                             senderNickname = social.localPetname ?? social.claimedNickname
                         } else {
                             senderNickname = "anon" + String(peerID.prefix(4))
diff --git a/bitchat/Services/CommandProcessor.swift b/bitchat/Services/CommandProcessor.swift
index f46b56b4..57b27bc4 100644
--- a/bitchat/Services/CommandProcessor.swift
+++ b/bitchat/Services/CommandProcessor.swift
@@ -20,10 +20,12 @@ enum CommandResult {
 final class CommandProcessor {
     weak var chatViewModel: ChatViewModel?
     weak var meshService: Transport?
+    private let identityManager: SecureIdentityStateManagerProtocol
     
-    init(chatViewModel: ChatViewModel? = nil, meshService: Transport? = nil) {
+    init(chatViewModel: ChatViewModel? = nil, meshService: Transport? = nil, identityManager: SecureIdentityStateManagerProtocol) {
         self.chatViewModel = chatViewModel
         self.meshService = meshService
+        self.identityManager = identityManager
     }
     
     /// Process a command string
@@ -189,7 +191,7 @@ final class CommandProcessor {
             }
 
             // Geohash blocked names (prefer visible display names; fallback to #suffix)
-            let geoBlocked = Array(SecureIdentityStateManager.shared.getBlockedNostrPubkeys())
+            let geoBlocked = Array(identityManager.getBlockedNostrPubkeys())
             var geoNames: [String] = []
             if let vm = chatViewModel {
                 let visible = vm.visibleGeohashPeople()
@@ -213,14 +215,14 @@ final class CommandProcessor {
         
         if let peerID = chatViewModel?.getPeerIDForNickname(nickname),
            let fingerprint = meshService?.getFingerprint(for: peerID) {
-            if SecureIdentityStateManager.shared.isBlocked(fingerprint: fingerprint) {
+            if identityManager.isBlocked(fingerprint: fingerprint) {
                 return .success(message: "\(nickname) is already blocked")
             }
             // Block the user (mesh/noise identity)
-            if var identity = SecureIdentityStateManager.shared.getSocialIdentity(for: fingerprint) {
+            if var identity = identityManager.getSocialIdentity(for: fingerprint) {
                 identity.isBlocked = true
                 identity.isFavorite = false
-                SecureIdentityStateManager.shared.updateSocialIdentity(identity)
+                identityManager.updateSocialIdentity(identity)
             } else {
                 let blockedIdentity = SocialIdentity(
                     fingerprint: fingerprint,
@@ -231,16 +233,16 @@ final class CommandProcessor {
                     isBlocked: true,
                     notes: nil
                 )
-                SecureIdentityStateManager.shared.updateSocialIdentity(blockedIdentity)
+                identityManager.updateSocialIdentity(blockedIdentity)
             }
             return .success(message: "blocked \(nickname). you will no longer receive messages from them")
         }
         // Mesh lookup failed; try geohash (Nostr) participant by display name
         if let pub = chatViewModel?.nostrPubkeyForDisplayName(nickname) {
-            if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: pub) {
+            if identityManager.isNostrBlocked(pubkeyHexLowercased: pub) {
                 return .success(message: "\(nickname) is already blocked")
             }
-            SecureIdentityStateManager.shared.setNostrBlocked(pub, isBlocked: true)
+            identityManager.setNostrBlocked(pub, isBlocked: true)
             return .success(message: "blocked \(nickname) in geohash chats")
         }
         
@@ -257,18 +259,18 @@ final class CommandProcessor {
         
         if let peerID = chatViewModel?.getPeerIDForNickname(nickname),
            let fingerprint = meshService?.getFingerprint(for: peerID) {
-            if !SecureIdentityStateManager.shared.isBlocked(fingerprint: fingerprint) {
+            if !identityManager.isBlocked(fingerprint: fingerprint) {
                 return .success(message: "\(nickname) is not blocked")
             }
-            SecureIdentityStateManager.shared.setBlocked(fingerprint, isBlocked: false)
+            identityManager.setBlocked(fingerprint, isBlocked: false)
             return .success(message: "unblocked \(nickname)")
         }
         // Try geohash unblock
         if let pub = chatViewModel?.nostrPubkeyForDisplayName(nickname) {
-            if !SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: pub) {
+            if !identityManager.isNostrBlocked(pubkeyHexLowercased: pub) {
                 return .success(message: "\(nickname) is not blocked")
             }
-            SecureIdentityStateManager.shared.setNostrBlocked(pub, isBlocked: false)
+            identityManager.setNostrBlocked(pub, isBlocked: false)
             return .success(message: "unblocked \(nickname) in geohash chats")
         }
         return .error(message: "cannot unblock \(nickname): not found")
diff --git a/bitchat/Services/KeychainManager.swift b/bitchat/Services/KeychainManager.swift
index d5c129e3..a2ca6b3f 100644
--- a/bitchat/Services/KeychainManager.swift
+++ b/bitchat/Services/KeychainManager.swift
@@ -9,16 +9,23 @@
 import Foundation
 import Security
 
-final class KeychainManager {
-    static let shared = KeychainManager()
+protocol KeychainManagerProtocol {
+    func saveIdentityKey(_ keyData: Data, forKey key: String) -> Bool
+    func getIdentityKey(forKey key: String) -> Data?
+    func deleteIdentityKey(forKey key: String) -> Bool
+    func deleteAllKeychainData() -> Bool
     
+    func secureClear(_ data: inout Data)
+    func secureClear(_ string: inout String)
+    
+    func verifyIdentityKeyExists() -> Bool
+}
+
+final class KeychainManager: KeychainManagerProtocol {
     // Use consistent service name for all keychain items
     private let service = "chat.bitchat"
     private let appGroup = "group.chat.bitchat"
     
-    private init() {}
-    
-    
     private func isSandboxed() -> Bool {
         #if os(macOS)
         // More robust sandbox detection using multiple methods
@@ -310,7 +317,7 @@ final class KeychainManager {
     // MARK: - Security Utilities
     
     /// Securely clear sensitive data from memory
-    static func secureClear(_ data: inout Data) {
+    func secureClear(_ data: inout Data) {
         _ = data.withUnsafeMutableBytes { bytes in
             // Use volatile memset to prevent compiler optimization
             memset_s(bytes.baseAddress, bytes.count, 0, bytes.count)
@@ -319,7 +326,7 @@ final class KeychainManager {
     }
     
     /// Securely clear sensitive string from memory
-    static func secureClear(_ string: inout String) {
+    func secureClear(_ string: inout String) {
         // Convert to mutable data and clear
         if var data = string.data(using: .utf8) {
             secureClear(&data)
diff --git a/bitchat/Services/NoiseEncryptionService.swift b/bitchat/Services/NoiseEncryptionService.swift
index 923575e5..a4757988 100644
--- a/bitchat/Services/NoiseEncryptionService.swift
+++ b/bitchat/Services/NoiseEncryptionService.swift
@@ -155,6 +155,7 @@ final class NoiseEncryptionService {
     
     // Security components
     private let rateLimiter = NoiseRateLimiter()
+    private let keychain: KeychainManagerProtocol
     
     // Session maintenance
     private var rekeyTimer: Timer?
@@ -181,12 +182,14 @@ final class NoiseEncryptionService {
         }
     }
     
-    init() {
+    init(keychain: KeychainManagerProtocol) {
+        self.keychain = keychain
+        
         // Load or create static identity key (ONLY from keychain)
         let loadedKey: Curve25519.KeyAgreement.PrivateKey
         
         // Try to load from keychain
-        if let identityData = KeychainManager.shared.getIdentityKey(forKey: "noiseStaticKey"),
+        if let identityData = keychain.getIdentityKey(forKey: "noiseStaticKey"),
            let key = try? Curve25519.KeyAgreement.PrivateKey(rawRepresentation: identityData) {
             loadedKey = key
             SecureLogger.logKeyOperation(.load, keyType: "noiseStaticKey", success: true)
@@ -197,7 +200,7 @@ final class NoiseEncryptionService {
             let keyData = loadedKey.rawRepresentation
             
             // Save to keychain
-            let saved = KeychainManager.shared.saveIdentityKey(keyData, forKey: "noiseStaticKey")
+            let saved = keychain.saveIdentityKey(keyData, forKey: "noiseStaticKey")
             SecureLogger.logKeyOperation(.create, keyType: "noiseStaticKey", success: saved)
         }
         
@@ -209,7 +212,7 @@ final class NoiseEncryptionService {
         let loadedSigningKey: Curve25519.Signing.PrivateKey
         
         // Try to load from keychain
-        if let signingData = KeychainManager.shared.getIdentityKey(forKey: "ed25519SigningKey"),
+        if let signingData = keychain.getIdentityKey(forKey: "ed25519SigningKey"),
            let key = try? Curve25519.Signing.PrivateKey(rawRepresentation: signingData) {
             loadedSigningKey = key
             SecureLogger.logKeyOperation(.load, keyType: "ed25519SigningKey", success: true)
@@ -220,7 +223,7 @@ final class NoiseEncryptionService {
             let keyData = loadedSigningKey.rawRepresentation
             
             // Save to keychain
-            let saved = KeychainManager.shared.saveIdentityKey(keyData, forKey: "ed25519SigningKey")
+            let saved = keychain.saveIdentityKey(keyData, forKey: "ed25519SigningKey")
             SecureLogger.logKeyOperation(.create, keyType: "ed25519SigningKey", success: saved)
         }
         
@@ -229,7 +232,7 @@ final class NoiseEncryptionService {
         self.signingPublicKey = signingKey.publicKey
         
         // Initialize session manager
-        self.sessionManager = NoiseSessionManager(localStaticKey: staticIdentityKey)
+        self.sessionManager = NoiseSessionManager(localStaticKey: staticIdentityKey, keychain: keychain)
         
         // Set up session callbacks
         sessionManager.onSessionEstablished = { [weak self] peerID, remoteStaticKey in
@@ -266,8 +269,8 @@ final class NoiseEncryptionService {
     /// Clear persistent identity (for panic mode)
     func clearPersistentIdentity() {
         // Clear from keychain
-        let deletedStatic = KeychainManager.shared.deleteIdentityKey(forKey: "noiseStaticKey")
-        let deletedSigning = KeychainManager.shared.deleteIdentityKey(forKey: "ed25519SigningKey")
+        let deletedStatic = keychain.deleteIdentityKey(forKey: "noiseStaticKey")
+        let deletedSigning = keychain.deleteIdentityKey(forKey: "ed25519SigningKey")
         SecureLogger.logKeyOperation(.delete, keyType: "identity keys", success: deletedStatic && deletedSigning)
         SecureLogger.warning("Panic mode activated - identity cleared", category: .security)
         // Stop rekey timer
diff --git a/bitchat/Services/NostrTransport.swift b/bitchat/Services/NostrTransport.swift
index fc7640c8..65c99af1 100644
--- a/bitchat/Services/NostrTransport.swift
+++ b/bitchat/Services/NostrTransport.swift
@@ -21,10 +21,15 @@ final class NostrTransport: Transport {
     private var readQueue: [QueuedRead] = []
     private var isSendingReadAcks = false
     private let readAckInterval: TimeInterval = TransportConfig.nostrReadAckInterval
+    private let keychain: KeychainManagerProtocol
 
     var myPeerID: String { senderPeerID }
     var myNickname: String { "" }
     func setNickname(_ nickname: String) { /* not used for Nostr */ }
+    
+    init(keychain: KeychainManagerProtocol) {
+        self.keychain = keychain
+    }
 
     func startServices() { /* no-op */ }
     func stopServices() { /* no-op */ }
@@ -38,11 +43,17 @@ final class NostrTransport: Transport {
     func getFingerprint(for peerID: String) -> String? { nil }
     func getNoiseSessionState(for peerID: String) -> LazyHandshakeState { .none }
     func triggerHandshake(with peerID: String) { /* no-op */ }
+    
     // Nostr does not use Noise sessions here; return a cached placeholder to avoid reallocation
-    private static var cachedNoiseService: NoiseEncryptionService = {
-        NoiseEncryptionService()
-    }()
-    func getNoiseService() -> NoiseEncryptionService { Self.cachedNoiseService }
+    private static var cachedNoiseService: NoiseEncryptionService?
+    func getNoiseService() -> NoiseEncryptionService {
+        if let noiseService = Self.cachedNoiseService {
+            return noiseService
+        }
+        let noiseService = NoiseEncryptionService(keychain: keychain)
+        Self.cachedNoiseService = noiseService
+        return noiseService
+    }
 
     // Public broadcast not supported over Nostr here
     func sendMessage(_ content: String, mentions: [String]) { /* no-op */ }
diff --git a/bitchat/Services/UnifiedPeerService.swift b/bitchat/Services/UnifiedPeerService.swift
index 30e91056..b7082b1c 100644
--- a/bitchat/Services/UnifiedPeerService.swift
+++ b/bitchat/Services/UnifiedPeerService.swift
@@ -27,14 +27,16 @@ final class UnifiedPeerService: ObservableObject, TransportPeerEventsDelegate {
     private var peerIndex: [String: BitchatPeer] = [:]
     private var fingerprintCache: [String: String] = [:]  // peerID -> fingerprint
     private let meshService: Transport
+    private let identityManager: SecureIdentityStateManagerProtocol
     weak var messageRouter: MessageRouter?
     private let favoritesService = FavoritesPersistenceService.shared
     private var cancellables = Set<AnyCancellable>()
     
     // MARK: - Initialization
     
-    init(meshService: Transport) {
+    init(meshService: Transport, identityManager: SecureIdentityStateManagerProtocol) {
         self.meshService = meshService
+        self.identityManager = identityManager
         
         // Subscribe to changes from both services
         setupSubscriptions()
@@ -174,7 +176,7 @@ final class UnifiedPeerService: ObservableObject, TransportPeerEventsDelegate {
         // Determine reachability based on lastSeen and identity trust
         let now = Date()
         let fingerprint = peerInfo.noisePublicKey?.sha256Fingerprint()
-        let isVerified = fingerprint.map { SecureIdentityStateManager.shared.isVerified(fingerprint: $0) } ?? false
+        let isVerified = fingerprint.map { identityManager.isVerified(fingerprint: $0) } ?? false
         let isFav = peerInfo.noisePublicKey.flatMap { favorites[$0]?.isFavorite } ?? false
         let retention: TimeInterval = (isVerified || isFav) ? TransportConfig.bleReachabilityRetentionVerifiedSeconds : TransportConfig.bleReachabilityRetentionUnverifiedSeconds
         // A peer is reachable if we recently saw them AND we are attached to the mesh
@@ -247,7 +249,7 @@ final class UnifiedPeerService: ObservableObject, TransportPeerEventsDelegate {
         guard let fingerprint = getFingerprint(for: peerID) else { return false }
         
         // Check SecureIdentityStateManager for block status
-        if let identity = SecureIdentityStateManager.shared.getSocialIdentity(for: fingerprint) {
+        if let identity = identityManager.getSocialIdentity(for: fingerprint) {
             return identity.isBlocked
         }
         
@@ -324,7 +326,7 @@ final class UnifiedPeerService: ObservableObject, TransportPeerEventsDelegate {
         guard let fingerprint = getFingerprint(for: peerID) else { return }
         
         // Get or create social identity
-        var identity = SecureIdentityStateManager.shared.getSocialIdentity(for: fingerprint)
+        var identity = identityManager.getSocialIdentity(for: fingerprint)
             ?? SocialIdentity(
                 fingerprint: fingerprint,
                 localPetname: nil,
@@ -347,7 +349,7 @@ final class UnifiedPeerService: ObservableObject, TransportPeerEventsDelegate {
             }
         }
         
-        SecureIdentityStateManager.shared.updateSocialIdentity(identity)
+        identityManager.updateSocialIdentity(identity)
     }
     
     /// Get fingerprint for peer ID
diff --git a/bitchat/ViewModels/ChatViewModel.swift b/bitchat/ViewModels/ChatViewModel.swift
index 8605744d..ff537ec1 100644
--- a/bitchat/ViewModels/ChatViewModel.swift
+++ b/bitchat/ViewModels/ChatViewModel.swift
@@ -344,13 +344,16 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     
     // MARK: - Services and Storage
     
-    var meshService: Transport = BLEService()
+    let meshService: Transport
+    let identityManager: SecureIdentityStateManagerProtocol
+    
     private var nostrRelayManager: NostrRelayManager?
     // PeerManager replaced by UnifiedPeerService
     private var processedNostrEvents = Set<String>()  // Simple deduplication
     private var processedNostrEventOrder: [String] = []
     private let maxProcessedNostrEvents = TransportConfig.uiProcessedNostrEventsCap
     private let userDefaults = UserDefaults.standard
+    private let keychain: KeychainManagerProtocol
     private let nicknameKey = "bitchat.nickname"
     // Location channel state (macOS supports manual geohash selection)
     @Published private var activeChannel: ChannelID = .mesh
@@ -485,7 +488,14 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     // MARK: - Initialization
     
     @MainActor
-    init() {
+    init(
+        keychain: KeychainManagerProtocol,
+        identityManager: SecureIdentityStateManagerProtocol
+    ) {
+        self.keychain = keychain
+        self.identityManager = identityManager
+        self.meshService = BLEService(keychain: keychain, identityManager: identityManager)
+        
         // Load persisted read receipts
         if let data = UserDefaults.standard.data(forKey: "sentReadReceipts"),
            let receipts = try? JSONDecoder().decode([String].self, from: data) {
@@ -496,10 +506,10 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         }
         
         // Initialize services
-        self.commandProcessor = CommandProcessor()
+        self.commandProcessor = CommandProcessor(identityManager: identityManager)
         self.privateChatManager = PrivateChatManager(meshService: meshService)
-        self.unifiedPeerService = UnifiedPeerService(meshService: meshService)
-        let nostrTransport = NostrTransport()
+        self.unifiedPeerService = UnifiedPeerService(meshService: meshService, identityManager: identityManager)
+        let nostrTransport = NostrTransport(keychain: keychain)
         self.messageRouter = MessageRouter(mesh: meshService, nostr: nostrTransport)
         // Route receipts from PrivateChatManager through MessageRouter
         self.privateChatManager.messageRouter = self.messageRouter
@@ -977,7 +987,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     let messageId = pm.messageID
                     // Send delivery ACK immediately (once per message ID)
                     if !self.sentGeoDeliveryAcks.contains(messageId) {
-                        let nt = NostrTransport()
+                        let nt = NostrTransport(keychain: keychain)
                         nt.senderPeerID = self.meshService.myPeerID
                         nt.sendDeliveryAckGeohash(for: messageId, toRecipientHex: senderPubkey, from: id)
                         self.sentGeoDeliveryAcks.insert(messageId)
@@ -1005,7 +1015,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     deliveryStatus: .delivered(to: self.nickname, at: Date())
                 )
                     // Respect geohash blocks
-                    if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: senderPubkey) {
+                    if identityManager.isNostrBlocked(pubkeyHexLowercased: senderPubkey) {
                         return
                     }
                     if self.privateChats[convKey] == nil { self.privateChats[convKey] = [] }
@@ -1015,7 +1025,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     if isViewing {
                         // pared back: omit pre-send READ log
                         if !wasReadBefore {
-                            let nt = NostrTransport()
+                            let nt = NostrTransport(keychain: keychain)
                             nt.senderPeerID = self.meshService.myPeerID
                             nt.sendReadReceiptGeohash(messageId, toRecipientHex: senderPubkey, from: id)
                             self.sentReadReceipts.insert(messageId)
@@ -1238,7 +1248,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         }
         
         // Update identity state manager with handshake completion
-        SecureIdentityStateManager.shared.updateHandshakeState(peerID: peerID, state: .completed(fingerprint: fingerprintStr))
+        identityManager.updateHandshakeState(peerID: peerID, state: .completed(fingerprint: fingerprintStr))
         
         // Update encryption status now that we have the fingerprint
         updateEncryptionStatus(for: peerID)
@@ -1247,9 +1257,9 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         let peerNicknames = meshService.getPeerNicknames()
         if let nickname = peerNicknames[peerID], nickname != "Unknown" && nickname != "anon\(peerID.prefix(4))" {
             // Update or create social identity with the claimed nickname
-            if var identity = SecureIdentityStateManager.shared.getSocialIdentity(for: fingerprintStr) {
+            if var identity = identityManager.getSocialIdentity(for: fingerprintStr) {
                 identity.claimedNickname = nickname
-                SecureIdentityStateManager.shared.updateSocialIdentity(identity)
+                identityManager.updateSocialIdentity(identity)
             } else {
                 let newIdentity = SocialIdentity(
                     fingerprint: fingerprintStr,
@@ -1260,7 +1270,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     isBlocked: false,
                     notes: nil
                 )
-                SecureIdentityStateManager.shared.updateSocialIdentity(newIdentity)
+                identityManager.updateSocialIdentity(newIdentity)
             }
         }
         
@@ -1621,7 +1631,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                 self.geoNicknames[event.pubkey.lowercased()] = nick
             }
             // If this pubkey is blocked, skip mapping, participants, and timeline
-            if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: event.pubkey) {
+            if identityManager.isNostrBlocked(pubkeyHexLowercased: event.pubkey) {
                 return
             }
             // Store mapping for geohash DM initiation
@@ -1699,7 +1709,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     SecureLogger.info("GeoDM: recv PM <- sender=\(senderPubkey.prefix(8))… mid=\(messageId.prefix(8))…", category: .session)
                     // Send delivery ACK immediately (even if duplicate), once per messageID
                     if !self.sentGeoDeliveryAcks.contains(messageId) {
-                        let nostrTransport = NostrTransport()
+                        let nostrTransport = NostrTransport(keychain: keychain)
                         nostrTransport.senderPeerID = self.meshService.myPeerID
                     // pared back: omit pre-send log
                         nostrTransport.sendDeliveryAckGeohash(for: messageId, toRecipientHex: senderPubkey, from: id)
@@ -1734,7 +1744,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     if isViewing {
                         // pared back: omit pre-send READ log
                         if !wasReadBefore {
-                            let nostrTransport = NostrTransport()
+                            let nostrTransport = NostrTransport(keychain: keychain)
                             nostrTransport.senderPeerID = self.meshService.myPeerID
                             nostrTransport.sendReadReceiptGeohash(messageId, toRecipientHex: senderPubkey, from: id)
                             self.sentReadReceipts.insert(messageId)
@@ -1819,7 +1829,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         // Prune expired entries
         map = map.filter { $0.value >= cutoff }
         // Remove blocked Nostr pubkeys
-        map = map.filter { !SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: $0.key) }
+        map = map.filter { !identityManager.isNostrBlocked(pubkeyHexLowercased: $0.key) }
         geoParticipants[gh] = map
         // Build display list
         let people = map
@@ -1852,7 +1862,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         let cutoff = Date().addingTimeInterval(-TransportConfig.uiRecentCutoffFiveMinutesSeconds)
         let map = (geoParticipants[gh] ?? [:])
             .filter { $0.value >= cutoff }
-            .filter { !SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: $0.key) }
+            .filter { !identityManager.isNostrBlocked(pubkeyHexLowercased: $0.key) }
         let people = map
             .map { (pub, seen) in GeoPerson(id: pub, displayName: displayNameForNostrPubkey(pub), lastSeen: seen) }
             .sorted { $0.lastSeen > $1.lastSeen }
@@ -1869,12 +1879,12 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     // Geohash block helpers
     @MainActor
     func isGeohashUserBlocked(pubkeyHexLowercased: String) -> Bool {
-        return SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: pubkeyHexLowercased)
+        return identityManager.isNostrBlocked(pubkeyHexLowercased: pubkeyHexLowercased)
     }
     @MainActor
     func blockGeohashUser(pubkeyHexLowercased: String, displayName: String) {
         let hex = pubkeyHexLowercased.lowercased()
-        SecureIdentityStateManager.shared.setNostrBlocked(hex, isBlocked: true)
+        identityManager.setNostrBlocked(hex, isBlocked: true)
         
         // Remove from participants for all geohashes
         for (gh, var map) in geoParticipants {
@@ -1922,7 +1932,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     }
     @MainActor
     func unblockGeohashUser(pubkeyHexLowercased: String, displayName: String) {
-        SecureIdentityStateManager.shared.setNostrBlocked(pubkeyHexLowercased, isBlocked: false)
+        identityManager.setNostrBlocked(pubkeyHexLowercased, isBlocked: false)
         addSystemMessage("unblocked \(displayName) in geohash chats")
     }
 
@@ -1971,7 +1981,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                 let content = event.content.trimmingCharacters(in: .whitespacesAndNewlines)
                 guard !content.isEmpty else { return }
                 // Respect geohash blocks
-                if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: event.pubkey.lowercased()) { return }
+                if identityManager.isNostrBlocked(pubkeyHexLowercased: event.pubkey.lowercased()) { return }
                 // Skip self identity for this geohash
                 if let my = try? NostrIdentityBridge.deriveIdentity(forGeohash: gh), my.publicKeyHex.lowercased() == event.pubkey.lowercased() { return }
                 // Only trigger when there were zero participants in this geohash recently
@@ -2123,7 +2133,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                 return
             }
             // Respect geohash blocks
-            if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: recipientHex) {
+            if identityManager.isNostrBlocked(pubkeyHexLowercased: recipientHex) {
                 if let msgIdx = privateChats[peerID]?.firstIndex(where: { $0.id == messageID }) {
                     privateChats[peerID]?[msgIdx].deliveryStatus = .failed(reason: "user is blocked")
                 }
@@ -2141,7 +2151,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     return
                 }
                 SecureLogger.debug("GeoDM: local send mid=\(messageID.prefix(8))… to=\(recipientHex.prefix(8))… conv=\(peerID)", category: .session)
-                let nostrTransport = NostrTransport()
+                let nostrTransport = NostrTransport(keychain: keychain)
                 nostrTransport.senderPeerID = meshService.myPeerID
                 nostrTransport.sendPrivateMessageGeohash(content: content, toRecipientHex: recipientHex, from: id, messageID: messageID)
                 if let msgIdx = privateChats[peerID]?.firstIndex(where: { $0.id == messageID }) {
@@ -2799,15 +2809,15 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         meshService.stopServices()
         
         // Force save any pending identity changes (verifications, favorites, etc)
-        SecureIdentityStateManager.shared.forceSave()
+        identityManager.forceSave()
         
         // Verify identity key is still there
-        _ = KeychainManager.shared.verifyIdentityKeyExists()
+        _ = keychain.verifyIdentityKeyExists()
         
         // No need to force synchronize here
         
         // Verify identity key after save
-        _ = KeychainManager.shared.verifyIdentityKeyExists()
+        _ = keychain.verifyIdentityKeyExists()
     }
     
     @objc private func appWillTerminate() {
@@ -2858,7 +2868,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
             for message in messages where message.senderPeerID == peerID && !message.isRelay {
                 if !sentReadReceipts.contains(message.id) {
                     SecureLogger.debug("GeoDM: sending READ for mid=\(message.id.prefix(8))… to=\(recipientHex.prefix(8))…", category: .session)
-                    let nostrTransport = NostrTransport()
+                    let nostrTransport = NostrTransport(keychain: keychain)
                     nostrTransport.senderPeerID = meshService.myPeerID
                     nostrTransport.sendReadReceiptGeohash(message.id, toRecipientHex: recipientHex, from: id)
                     sentReadReceipts.insert(message.id)
@@ -3004,7 +3014,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         privateChatManager.unreadMessages.removeAll()
         
         // Delete all keychain data (including Noise and Nostr keys)
-        _ = KeychainManager.shared.deleteAllKeychainData()
+        _ = keychain.deleteAllKeychainData()
         
         // Clear UserDefaults identity data
         userDefaults.removeObject(forKey: "bitchat.noiseIdentityKey")
@@ -3020,14 +3030,14 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         
         // Clear favorites and peer mappings
         // Clear through SecureIdentityStateManager instead of directly
-        SecureIdentityStateManager.shared.clearAllIdentityData()
+        identityManager.clearAllIdentityData()
         peerIDToPublicKeyFingerprint.removeAll()
         
         // Clear persistent favorites from keychain
         FavoritesPersistenceService.shared.clearAllFavorites()
         
         // Clear identity data from secure storage
-        SecureIdentityStateManager.shared.clearAllIdentityData()
+        identityManager.clearAllIdentityData()
         
         // Clear autocomplete state
         autocompleteSuggestions.removeAll()
@@ -4253,7 +4263,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         
         // Try to resolve through fingerprint and social identity
         if let fingerprint = getFingerprint(for: peerID) {
-            if let identity = SecureIdentityStateManager.shared.getSocialIdentity(for: fingerprint) {
+            if let identity = identityManager.getSocialIdentity(for: fingerprint) {
                 // Prefer local petname if set
                 if let petname = identity.localPetname {
                     return petname
@@ -4285,7 +4295,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         guard let fingerprint = getFingerprint(for: peerID) else { return }
         
         // Update secure storage with verified status
-        SecureIdentityStateManager.shared.setVerified(fingerprint: fingerprint, verified: true)
+        identityManager.setVerified(fingerprint: fingerprint, verified: true)
         
         // Update local set for UI
         verifiedFingerprints.insert(fingerprint)
@@ -4297,8 +4307,8 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     @MainActor
     func unverifyFingerprint(for peerID: String) {
         guard let fingerprint = getFingerprint(for: peerID) else { return }
-        SecureIdentityStateManager.shared.setVerified(fingerprint: fingerprint, verified: false)
-        SecureIdentityStateManager.shared.forceSave()
+        identityManager.setVerified(fingerprint: fingerprint, verified: false)
+        identityManager.forceSave()
         verifiedFingerprints.remove(fingerprint)
         updateEncryptionStatus(for: peerID)
     }
@@ -4306,7 +4316,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     @MainActor
     func loadVerifiedFingerprints() {
         // Load verified fingerprints directly from secure storage
-        verifiedFingerprints = SecureIdentityStateManager.shared.getVerifiedFingerprints()
+        verifiedFingerprints = identityManager.getVerifiedFingerprints()
         // Log snapshot for debugging persistence
         let sample = Array(verifiedFingerprints.prefix(TransportConfig.uiFingerprintSampleCount)).map { $0.prefix(8) }.joined(separator: ", ")
         SecureLogger.info("🔐 Verified loaded: \(verifiedFingerprints.count) [\(sample)]", category: .security)
@@ -4506,8 +4516,8 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                     if let fp = getFingerprint(for: peerID) {
                         let short = fp.prefix(8)
                         SecureLogger.info("🔐 Marking verified fingerprint: \(short)", category: .security)
-                        SecureIdentityStateManager.shared.setVerified(fingerprint: fp, verified: true)
-                        SecureIdentityStateManager.shared.forceSave()
+                        identityManager.setVerified(fingerprint: fp, verified: true)
+                        identityManager.forceSave()
                         verifiedFingerprints.insert(fp)
                         let name = unifiedPeerService.getPeer(by: peerID)?.nickname ?? resolveNickname(for: peerID)
                         NotificationService.shared.sendLocalNotification(
@@ -4598,7 +4608,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
             isConnected = true
             
             // Register ephemeral session with identity manager
-            SecureIdentityStateManager.shared.registerEphemeralSession(peerID: peerID)
+            identityManager.registerEphemeralSession(peerID: peerID, handshakeState: .none)
             
             // Intentionally do not resend favorites on reconnect.
             // We only send our npub when a favorite is toggled on, or if our npub changes.
@@ -4623,7 +4633,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
         SecureLogger.debug("👋 Peer disconnected: \(peerID)", category: .session)
         
         // Remove ephemeral session from identity manager
-        SecureIdentityStateManager.shared.removeEphemeralSession(peerID: peerID)
+        identityManager.removeEphemeralSession(peerID: peerID)
 
         // If the open PM is tied to this short peer ID, switch UI context to the full Noise key (offline favorite)
         var derivedStableKeyHex: String? = shortIDToNoiseKey[peerID]
@@ -4730,7 +4740,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
             
             // Register ephemeral sessions for all connected peers
             for peerID in peers {
-                SecureIdentityStateManager.shared.registerEphemeralSession(peerID: peerID)
+                self.identityManager.registerEphemeralSession(peerID: peerID, handshakeState: .none)
             }
             
             // Schedule UI refresh to ensure offline favorites are shown
@@ -4882,7 +4892,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
     }
     
     func isFavorite(fingerprint: String) -> Bool {
-        return SecureIdentityStateManager.shared.isFavorite(fingerprint: fingerprint)
+        return identityManager.isFavorite(fingerprint: fingerprint)
     }
     
     // MARK: - Delivery Tracking
@@ -5212,7 +5222,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                         messageRouter.sendDeliveryAck(messageId, to: key.hexEncodedString())
                     } else if let id = try? NostrIdentityBridge.getCurrentNostrIdentity() {
                         // Fallback: no Noise mapping yet — send directly to sender's Nostr pubkey
-                        let nt = NostrTransport()
+                        let nt = NostrTransport(keychain: keychain)
                         nt.senderPeerID = meshService.myPeerID
                         nt.sendDeliveryAckGeohash(for: messageId, toRecipientHex: senderPubkey, from: id)
                         SecureLogger.debug("Sent DELIVERED ack directly to Nostr pub=\(senderPubkey.prefix(8))… for mid=\(messageId.prefix(8))…", category: .session)
@@ -5234,7 +5244,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
                             messageRouter.sendReadReceipt(receipt, to: key.hexEncodedString())
                             sentReadReceipts.insert(messageId)
                         } else if let id = try? NostrIdentityBridge.getCurrentNostrIdentity() {
-                            let nt = NostrTransport()
+                            let nt = NostrTransport(keychain: keychain)
                             nt.senderPeerID = meshService.myPeerID
                             nt.sendReadReceiptGeohash(messageId, toRecipientHex: senderPubkey, from: id)
                             sentReadReceipts.insert(messageId)
@@ -5613,7 +5623,7 @@ final class ChatViewModel: ObservableObject, BitchatDelegate {
             // Check geohash (Nostr) blocks using mapping to full pubkey
             if peerID.hasPrefix("nostr") {
                 if let full = nostrKeyMapping[peerID]?.lowercased() {
-                    if SecureIdentityStateManager.shared.isNostrBlocked(pubkeyHexLowercased: full) { return true }
+                    if identityManager.isNostrBlocked(pubkeyHexLowercased: full) { return true }
                 }
             }
             return false
diff --git a/bitchat/Views/ContentView.swift b/bitchat/Views/ContentView.swift
index 921bebe7..dbc4285c 100644
--- a/bitchat/Views/ContentView.swift
+++ b/bitchat/Views/ContentView.swift
@@ -1247,15 +1247,15 @@ struct ContentView: View {
                !fav.peerNickname.isEmpty { return fav.peerNickname }
             // Fallback: resolve from persisted social identity via fingerprint mapping
             if headerPeerID.count == 16 {
-                let candidates = SecureIdentityStateManager.shared.getCryptoIdentitiesByPeerIDPrefix(headerPeerID)
+                let candidates = viewModel.identityManager.getCryptoIdentitiesByPeerIDPrefix(headerPeerID)
                 if let id = candidates.first,
-                   let social = SecureIdentityStateManager.shared.getSocialIdentity(for: id.fingerprint) {
+                   let social = viewModel.identityManager.getSocialIdentity(for: id.fingerprint) {
                     if let pet = social.localPetname, !pet.isEmpty { return pet }
                     if !social.claimedNickname.isEmpty { return social.claimedNickname }
                 }
             } else if headerPeerID.count == 64, let keyData = Data(hexString: headerPeerID) {
                 let fp = keyData.sha256Fingerprint()
-                if let social = SecureIdentityStateManager.shared.getSocialIdentity(for: fp) {
+                if let social = viewModel.identityManager.getSocialIdentity(for: fp) {
                     if let pet = social.localPetname, !pet.isEmpty { return pet }
                     if !social.claimedNickname.isEmpty { return social.claimedNickname }
                 }
diff --git a/bitchat/Views/FingerprintView.swift b/bitchat/Views/FingerprintView.swift
index b99a3739..a3d2541a 100644
--- a/bitchat/Views/FingerprintView.swift
+++ b/bitchat/Views/FingerprintView.swift
@@ -53,7 +53,7 @@ struct FingerprintView: View {
                     if peerID.count == 64, let data = Data(hexString: peerID) {
                         if let fav = FavoritesPersistenceService.shared.getFavoriteStatus(for: data), !fav.peerNickname.isEmpty { return fav.peerNickname }
                         let fp = data.sha256Fingerprint()
-                        if let social = SecureIdentityStateManager.shared.getSocialIdentity(for: fp) {
+                        if let social = viewModel.identityManager.getSocialIdentity(for: fp) {
                             if let pet = social.localPetname, !pet.isEmpty { return pet }
                             if !social.claimedNickname.isEmpty { return social.claimedNickname }
                         }
diff --git a/bitchatTests/CommandProcessorTests.swift b/bitchatTests/CommandProcessorTests.swift
index 75bbdaf8..071dad96 100644
--- a/bitchatTests/CommandProcessorTests.swift
+++ b/bitchatTests/CommandProcessorTests.swift
@@ -2,10 +2,23 @@ import XCTest
 @testable import bitchat
 
 final class CommandProcessorTests: XCTestCase {
+    
+    var identityManager: MockIdentityManager!
+    
+    override func setUp() {
+        super.setUp()
+        // Provide a minimal identity manager for commands that query identity/block lists
+        identityManager = MockIdentityManager(MockKeychain())
+    }
+    
+    override func tearDown() {
+        identityManager = nil
+        super.tearDown()
+    }
 
     @MainActor
     func test_slap_notFoundGrammar() {
-        let processor = CommandProcessor(chatViewModel: nil, meshService: nil)
+        let processor = CommandProcessor(chatViewModel: nil, meshService: nil, identityManager: identityManager)
         let result = processor.process("/slap @system")
         switch result {
         case .error(let message):
@@ -17,7 +30,7 @@ final class CommandProcessorTests: XCTestCase {
 
     @MainActor
     func test_hug_notFoundGrammar() {
-        let processor = CommandProcessor(chatViewModel: nil, meshService: nil)
+        let processor = CommandProcessor(chatViewModel: nil, meshService: nil, identityManager: identityManager)
         let result = processor.process("/hug @system")
         switch result {
         case .error(let message):
@@ -29,7 +42,7 @@ final class CommandProcessorTests: XCTestCase {
 
     @MainActor
     func test_slap_usageMessage() {
-        let processor = CommandProcessor(chatViewModel: nil, meshService: nil)
+        let processor = CommandProcessor(chatViewModel: nil, meshService: nil, identityManager: identityManager)
         let result = processor.process("/slap")
         switch result {
         case .error(let message):
@@ -39,4 +52,3 @@ final class CommandProcessorTests: XCTestCase {
         }
     }
 }
-
diff --git a/bitchatTests/EndToEnd/PrivateChatE2ETests.swift b/bitchatTests/EndToEnd/PrivateChatE2ETests.swift
index 2b306024..0c90e5ab 100644
--- a/bitchatTests/EndToEnd/PrivateChatE2ETests.swift
+++ b/bitchatTests/EndToEnd/PrivateChatE2ETests.swift
@@ -16,6 +16,8 @@ final class PrivateChatE2ETests: XCTestCase {
     var bob: MockBluetoothMeshService!
     var charlie: MockBluetoothMeshService!
     
+    private var mockKeychain: MockKeychain!
+    
     override func setUp() {
         super.setUp()
         MockBLEService.resetTestBus()
@@ -24,6 +26,7 @@ final class PrivateChatE2ETests: XCTestCase {
         alice = createMockService(peerID: TestConstants.testPeerID1, nickname: TestConstants.testNickname1)
         bob = createMockService(peerID: TestConstants.testPeerID2, nickname: TestConstants.testNickname2)
         charlie = createMockService(peerID: TestConstants.testPeerID3, nickname: TestConstants.testNickname3)
+        mockKeychain = MockKeychain()
         
         // Delivery tracking is now handled internally by BLEService
     }
@@ -32,6 +35,7 @@ final class PrivateChatE2ETests: XCTestCase {
         alice = nil
         bob = nil
         charlie = nil
+        mockKeychain = nil
         super.tearDown()
     }
     
@@ -116,8 +120,8 @@ final class PrivateChatE2ETests: XCTestCase {
         let aliceKey = Curve25519.KeyAgreement.PrivateKey()
         let bobKey = Curve25519.KeyAgreement.PrivateKey()
         
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Establish encrypted session
         do {
diff --git a/bitchatTests/Fragmentation/FragmentationTests.swift b/bitchatTests/Fragmentation/FragmentationTests.swift
index 4f63b029..ba3173b1 100644
--- a/bitchatTests/Fragmentation/FragmentationTests.swift
+++ b/bitchatTests/Fragmentation/FragmentationTests.swift
@@ -10,6 +10,21 @@ import XCTest
 @testable import bitchat
 
 final class FragmentationTests: XCTestCase {
+    
+    private var mockKeychain: MockKeychain!
+    private var mockIdentityManager: MockIdentityManager!
+    
+    override func setUp() {
+        super.setUp()
+        mockKeychain = MockKeychain()
+        mockIdentityManager = MockIdentityManager(mockKeychain)
+    }
+    
+    override func tearDown() {
+        mockKeychain = nil
+        mockIdentityManager = nil
+        super.tearDown()
+    }
 
     private final class CaptureDelegate: BitchatDelegate {
         var publicMessages: [(peerID: String, nickname: String, content: String)] = []
@@ -75,7 +90,7 @@ final class FragmentationTests: XCTestCase {
     }
 
     func test_reassembly_from_fragments_delivers_public_message() {
-        let ble = BLEService()
+        let ble = BLEService(keychain: mockKeychain, identityManager: mockIdentityManager)
         let capture = CaptureDelegate()
         ble.delegate = capture
 
@@ -106,7 +121,7 @@ final class FragmentationTests: XCTestCase {
     }
 
     func test_duplicate_fragment_does_not_break_reassembly() {
-        let ble = BLEService()
+        let ble = BLEService(keychain: mockKeychain, identityManager: mockIdentityManager)
         let capture = CaptureDelegate()
         ble.delegate = capture
 
@@ -132,7 +147,7 @@ final class FragmentationTests: XCTestCase {
     }
 
     func test_invalid_fragment_header_is_ignored() {
-        let ble = BLEService()
+        let ble = BLEService(keychain: mockKeychain, identityManager: mockIdentityManager)
         let capture = CaptureDelegate()
         ble.delegate = capture
 
diff --git a/bitchatTests/Integration/IntegrationTests.swift b/bitchatTests/Integration/IntegrationTests.swift
index 8e16a719..8824f657 100644
--- a/bitchatTests/Integration/IntegrationTests.swift
+++ b/bitchatTests/Integration/IntegrationTests.swift
@@ -14,6 +14,7 @@ final class IntegrationTests: XCTestCase {
     
     var nodes: [String: MockBluetoothMeshService] = [:]
     var noiseManagers: [String: NoiseSessionManager] = [:]
+    private var mockKeychain: MockKeychain!
     
     override func setUp() {
         super.setUp()
@@ -21,6 +22,7 @@ final class IntegrationTests: XCTestCase {
         // broadcast propagation across a larger mesh. Integration-only.
         MockBLEService.resetTestBus()
         MockBLEService.autoFloodEnabled = true
+        mockKeychain = MockKeychain()
         
         // Create a network of nodes
         createNode("Alice", peerID: TestConstants.testPeerID1)
@@ -34,6 +36,7 @@ final class IntegrationTests: XCTestCase {
         MockBLEService.autoFloodEnabled = false
         nodes.removeAll()
         noiseManagers.removeAll()
+        mockKeychain = nil
         super.tearDown()
     }
     
@@ -307,7 +310,7 @@ final class IntegrationTests: XCTestCase {
         
         // Simulate Bob restart by recreating his Noise manager
         let bobKey = Curve25519.KeyAgreement.PrivateKey()
-        noiseManagers["Bob"] = NoiseSessionManager(localStaticKey: bobKey)
+        noiseManagers["Bob"] = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Re-establish Noise handshake explicitly via managers
         do {
@@ -593,7 +596,7 @@ final class IntegrationTests: XCTestCase {
         
         // Create Noise manager
         let key = Curve25519.KeyAgreement.PrivateKey()
-        noiseManagers[name] = NoiseSessionManager(localStaticKey: key)
+        noiseManagers[name] = NoiseSessionManager(localStaticKey: key, keychain: mockKeychain)
     }
     
     private func connect(_ node1: String, _ node2: String) {
diff --git a/bitchatTests/Mocks/MockBLEService.swift b/bitchatTests/Mocks/MockBLEService.swift
index eccf1082..ca545c50 100644
--- a/bitchatTests/Mocks/MockBLEService.swift
+++ b/bitchatTests/Mocks/MockBLEService.swift
@@ -36,6 +36,8 @@ final class MockBLEService: NSObject {
     var myPeerID: String = "MOCK1234"
     var myNickname: String = "MockUser"
     
+    private let mockKeychain = MockKeychain()
+    
     // Test-specific properties
     var sentMessages: [(message: BitchatMessage, packet: BitchatPacket)] = []
     var sentPackets: [BitchatPacket] = []
@@ -272,7 +274,7 @@ final class MockBLEService: NSObject {
     }
     
     func getNoiseService() -> NoiseEncryptionService {
-        return NoiseEncryptionService()
+        return NoiseEncryptionService(keychain: mockKeychain)
     }
     
     func getFingerprint(for peerID: String) -> String? {
diff --git a/bitchatTests/Mocks/MockIdentityManager.swift b/bitchatTests/Mocks/MockIdentityManager.swift
new file mode 100644
index 00000000..10eb9094
--- /dev/null
+++ b/bitchatTests/Mocks/MockIdentityManager.swift
@@ -0,0 +1,80 @@
+//
+// MockIdentityManager.swift
+// bitchat
+//
+// This is free and unencumbered software released into the public domain.
+// For more information, see <https://unlicense.org>
+//
+
+import Foundation
+@testable import bitchat
+
+final class MockIdentityManager: SecureIdentityStateManagerProtocol {
+    private let keychain: KeychainManagerProtocol
+    
+    init(_ keychain: KeychainManagerProtocol) {
+        self.keychain = keychain
+    }
+    
+    func loadIdentityCache() {}
+    
+    func saveIdentityCache() {}
+    
+    func forceSave() {}
+    
+    func getSocialIdentity(for fingerprint: String) -> SocialIdentity? {
+        nil
+    }
+    
+    func upsertCryptographicIdentity(fingerprint: String, noisePublicKey: Data, signingPublicKey: Data?, claimedNickname: String?) {}
+    
+    func getCryptoIdentitiesByPeerIDPrefix(_ peerID: String) -> [CryptographicIdentity] {
+        []
+    }
+    
+    func updateSocialIdentity(_ identity: SocialIdentity) {}
+    
+    func getFavorites() -> Set<String> {
+        Set()
+    }
+    
+    func setFavorite(_ fingerprint: String, isFavorite: Bool) {}
+    
+    func isFavorite(fingerprint: String) -> Bool {
+        false
+    }
+    
+    func isBlocked(fingerprint: String) -> Bool {
+        false
+    }
+    
+    func setBlocked(_ fingerprint: String, isBlocked: Bool) {}
+    
+    func isNostrBlocked(pubkeyHexLowercased: String) -> Bool {
+        true
+    }
+    
+    func setNostrBlocked(_ pubkeyHexLowercased: String, isBlocked: Bool) {}
+    
+    func getBlockedNostrPubkeys() -> Set<String> {
+        Set()
+    }
+    
+    func registerEphemeralSession(peerID: String, handshakeState: HandshakeState) {}
+    
+    func updateHandshakeState(peerID: String, state: HandshakeState) {}
+    
+    func clearAllIdentityData() {}
+    
+    func removeEphemeralSession(peerID: String) {}
+    
+    func setVerified(fingerprint: String, verified: Bool) {}
+    
+    func isVerified(fingerprint: String) -> Bool {
+        true
+    }
+    
+    func getVerifiedFingerprints() -> Set<String> {
+        Set()
+    }
+}
diff --git a/bitchatTests/Mocks/MockKeychain.swift b/bitchatTests/Mocks/MockKeychain.swift
new file mode 100644
index 00000000..dfc42e17
--- /dev/null
+++ b/bitchatTests/Mocks/MockKeychain.swift
@@ -0,0 +1,46 @@
+//
+// MockKeychain.swift
+// bitchat
+//
+// This is free and unencumbered software released into the public domain.
+// For more information, see <https://unlicense.org>
+//
+
+import Foundation
+@testable import bitchat
+
+final class MockKeychain: KeychainManagerProtocol {
+    private var storage: [String: Data] = [:]
+    
+    func saveIdentityKey(_ keyData: Data, forKey key: String) -> Bool {
+        storage[key] = keyData
+        return true
+    }
+    
+    func getIdentityKey(forKey key: String) -> Data? {
+        storage[key]
+    }
+    
+    func deleteIdentityKey(forKey key: String) -> Bool {
+        storage.removeValue(forKey: key)
+        return true
+    }
+    
+    func deleteAllKeychainData() -> Bool {
+        storage.removeAll()
+        return true
+    }
+    
+    func secureClear(_ data: inout Data) {
+        //
+        data = Data()
+    }
+    
+    func secureClear(_ string: inout String) {
+        string = ""
+    }
+    
+    func verifyIdentityKeyExists() -> Bool {
+        storage["identity_noiseStaticKey"] != nil
+    }
+}
diff --git a/bitchatTests/Noise/NoiseProtocolTests.swift b/bitchatTests/Noise/NoiseProtocolTests.swift
index ed278b4f..0b7ad2db 100644
--- a/bitchatTests/Noise/NoiseProtocolTests.swift
+++ b/bitchatTests/Noise/NoiseProtocolTests.swift
@@ -16,16 +16,19 @@ final class NoiseProtocolTests: XCTestCase {
     var bobKey: Curve25519.KeyAgreement.PrivateKey!
     var aliceSession: NoiseSession!
     var bobSession: NoiseSession!
+    private var mockKeychain: MockKeychain!
     
     override func setUp() {
         super.setUp()
         aliceKey = Curve25519.KeyAgreement.PrivateKey()
         bobKey = Curve25519.KeyAgreement.PrivateKey()
+        mockKeychain = MockKeychain()
     }
     
     override func tearDown() {
         aliceSession = nil
         bobSession = nil
+        mockKeychain = nil
         super.tearDown()
     }
     
@@ -36,12 +39,14 @@ final class NoiseProtocolTests: XCTestCase {
         aliceSession = NoiseSession(
             peerID: TestConstants.testPeerID2,
             role: .initiator,
+            keychain: mockKeychain,
             localStaticKey: aliceKey
         )
         
         bobSession = NoiseSession(
             peerID: TestConstants.testPeerID1,
             role: .responder,
+            keychain: mockKeychain,
             localStaticKey: bobKey
         )
         
@@ -80,6 +85,7 @@ final class NoiseProtocolTests: XCTestCase {
         aliceSession = NoiseSession(
             peerID: TestConstants.testPeerID2,
             role: .initiator,
+            keychain: mockKeychain,
             localStaticKey: aliceKey
         )
         
@@ -144,6 +150,7 @@ final class NoiseProtocolTests: XCTestCase {
         aliceSession = NoiseSession(
             peerID: TestConstants.testPeerID2,
             role: .initiator,
+            keychain: mockKeychain,
             localStaticKey: aliceKey
         )
         
@@ -157,7 +164,7 @@ final class NoiseProtocolTests: XCTestCase {
     // MARK: - Session Manager Tests
     
     func testSessionManagerBasicOperations() throws {
-        let manager = NoiseSessionManager(localStaticKey: aliceKey)
+        let manager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
         
         // Create session
         let session = manager.createSession(for: TestConstants.testPeerID2, role: .initiator)
@@ -174,7 +181,7 @@ final class NoiseProtocolTests: XCTestCase {
     }
     
     func testSessionManagerHandshakeInitiation() throws {
-        let manager = NoiseSessionManager(localStaticKey: aliceKey)
+        let manager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
         
         // Initiate handshake
         let handshakeData = try manager.initiateHandshake(with: TestConstants.testPeerID2)
@@ -187,8 +194,8 @@ final class NoiseProtocolTests: XCTestCase {
     }
     
     func testSessionManagerIncomingHandshake() throws {
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Alice initiates
         let message1 = try aliceManager.initiateHandshake(with: TestConstants.testPeerID2)
@@ -211,8 +218,8 @@ final class NoiseProtocolTests: XCTestCase {
     }
     
     func testSessionManagerEncryptionDecryption() throws {
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Establish sessions
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
@@ -256,11 +263,11 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testSessionIsolation() throws {
         // Create two separate session pairs
-        let aliceSession1 = NoiseSession(peerID: "peer1", role: .initiator, localStaticKey: aliceKey)
-        let bobSession1 = NoiseSession(peerID: "alice1", role: .responder, localStaticKey: bobKey)
+        let aliceSession1 = NoiseSession(peerID: "peer1", role: .initiator, keychain: mockKeychain, localStaticKey: aliceKey)
+        let bobSession1 = NoiseSession(peerID: "alice1", role: .responder, keychain: mockKeychain, localStaticKey: bobKey)
         
-        let aliceSession2 = NoiseSession(peerID: "peer2", role: .initiator, localStaticKey: aliceKey)
-        let bobSession2 = NoiseSession(peerID: "alice2", role: .responder, localStaticKey: bobKey)
+        let aliceSession2 = NoiseSession(peerID: "peer2", role: .initiator, keychain: mockKeychain, localStaticKey: aliceKey)
+        let bobSession2 = NoiseSession(peerID: "alice2", role: .responder, keychain: mockKeychain, localStaticKey: bobKey)
         
         // Establish both pairs
         try performHandshake(initiator: aliceSession1, responder: bobSession1)
@@ -282,8 +289,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testPeerRestartDetection() throws {
         // Establish initial sessions
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
         
@@ -295,7 +302,7 @@ final class NoiseProtocolTests: XCTestCase {
         _ = try aliceManager.decrypt(message2, from: TestConstants.testPeerID2)
         
         // Simulate Bob restart by creating new manager with same key
-        let bobManagerRestarted = NoiseSessionManager(localStaticKey: bobKey)
+        let bobManagerRestarted = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Bob initiates new handshake after restart
         let newHandshake1 = try bobManagerRestarted.initiateHandshake(with: TestConstants.testPeerID1)
@@ -318,8 +325,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testNonceDesynchronizationRecovery() throws {
         // Create two sessions
-        aliceSession = NoiseSession(peerID: TestConstants.testPeerID2, role: .initiator, localStaticKey: aliceKey)
-        bobSession = NoiseSession(peerID: TestConstants.testPeerID1, role: .responder, localStaticKey: bobKey)
+        aliceSession = NoiseSession(peerID: TestConstants.testPeerID2, role: .initiator, keychain: mockKeychain, localStaticKey: aliceKey)
+        bobSession = NoiseSession(peerID: TestConstants.testPeerID1, role: .responder, keychain: mockKeychain, localStaticKey: bobKey)
         
         // Establish sessions
         try performHandshake(initiator: aliceSession, responder: bobSession)
@@ -342,8 +349,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testConcurrentEncryption() throws {
         // Test thread safety of encryption operations
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
         
@@ -380,8 +387,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testSessionStaleDetection() throws {
         // Test that sessions are properly marked as stale
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
         
@@ -394,8 +401,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testHandshakeAfterDecryptionFailure() throws {
         // Test that handshake is properly initiated after decryption failure
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Establish sessions
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
@@ -413,8 +420,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testHandshakeAlwaysAcceptedWithExistingSession() throws {
         // Test that handshake is always accepted even with existing valid session
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Establish sessions
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
@@ -453,8 +460,8 @@ final class NoiseProtocolTests: XCTestCase {
     
     func testNonceDesynchronizationCausesRehandshake() throws {
         // Test that nonce desynchronization leads to proper re-handshake
-        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey)
-        let bobManager = NoiseSessionManager(localStaticKey: bobKey)
+        let aliceManager = NoiseSessionManager(localStaticKey: aliceKey, keychain: mockKeychain)
+        let bobManager = NoiseSessionManager(localStaticKey: bobKey, keychain: mockKeychain)
         
         // Establish sessions
         try establishManagerSessions(aliceManager: aliceManager, bobManager: bobManager)
@@ -499,8 +506,8 @@ final class NoiseProtocolTests: XCTestCase {
     func testHandshakePerformance() throws {
         measure {
             do {
-                let alice = NoiseSession(peerID: "bob", role: .initiator, localStaticKey: aliceKey)
-                let bob = NoiseSession(peerID: "alice", role: .responder, localStaticKey: bobKey)
+                let alice = NoiseSession(peerID: "bob", role: .initiator, keychain: mockKeychain, localStaticKey: aliceKey)
+                let bob = NoiseSession(peerID: "alice", role: .responder, keychain: mockKeychain, localStaticKey: bobKey)
                 try performHandshake(initiator: alice, responder: bob)
             } catch {
                 XCTFail("Handshake failed: \(error)")
@@ -530,12 +537,14 @@ final class NoiseProtocolTests: XCTestCase {
         aliceSession = NoiseSession(
             peerID: TestConstants.testPeerID2,
             role: .initiator,
+            keychain: mockKeychain,
             localStaticKey: aliceKey
         )
         
         bobSession = NoiseSession(
             peerID: TestConstants.testPeerID1,
             role: .responder,
+            keychain: mockKeychain,
             localStaticKey: bobKey
         )