mirror of
https://github.com/permissionlesstech/bitchat.git
synced 2026-07-25 04:05:20 +00:00
Initial work on adding Noise test vectors
I only became aware halfway through working on these that `bitchatTests/Noise` exists, so the next step is to integrate them over there.
This commit is contained in:
Nadim Kobeissi
+122
-106
@@ -77,7 +77,9 @@
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/// - Noise Specification: http://www.noiseprotocol.org/noise.html
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///
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#if !NOISE_TESTS
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import BitLogger
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#endif
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import Foundation
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import CryptoKit
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@@ -115,7 +117,7 @@ struct NoiseProtocolName {
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let dh: String = "25519" // Curve25519
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let cipher: String = "ChaChaPoly" // ChaCha20-Poly1305
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let hash: String = "SHA256" // SHA-256
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var fullName: String {
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"Noise_\(pattern)_\(dh)_\(cipher)_\(hash)"
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}
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@@ -133,59 +135,59 @@ final class NoiseCipherState {
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private static let REPLAY_WINDOW_SIZE = 1024
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private static let REPLAY_WINDOW_BYTES = REPLAY_WINDOW_SIZE / 8 // 128 bytes
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private static let HIGH_NONCE_WARNING_THRESHOLD: UInt64 = 1_000_000_000
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private var key: SymmetricKey?
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private var nonce: UInt64 = 0
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private var useExtractedNonce: Bool = false
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// Sliding window replay protection (only used when useExtractedNonce = true)
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private var highestReceivedNonce: UInt64 = 0
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private var replayWindow: [UInt8] = Array(repeating: 0, count: REPLAY_WINDOW_BYTES)
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init() {}
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init(key: SymmetricKey, useExtractedNonce: Bool = false) {
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self.key = key
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self.useExtractedNonce = useExtractedNonce
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}
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deinit {
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clearSensitiveData()
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}
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func initializeKey(_ key: SymmetricKey) {
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self.key = key
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self.nonce = 0
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}
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func hasKey() -> Bool {
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return key != nil
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}
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// MARK: - Sliding Window Replay Protection
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/// Check if nonce is valid for replay protection
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private func isValidNonce(_ receivedNonce: UInt64) -> Bool {
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if receivedNonce + UInt64(Self.REPLAY_WINDOW_SIZE) <= highestReceivedNonce {
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return false // Too old, outside window
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}
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if receivedNonce > highestReceivedNonce {
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return true // Always accept newer nonces
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}
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let offset = Int(highestReceivedNonce - receivedNonce)
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let byteIndex = offset / 8
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let bitIndex = offset % 8
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return (replayWindow[byteIndex] & (1 << bitIndex)) == 0 // Not yet seen
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}
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/// Mark nonce as seen in replay window
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private func markNonceAsSeen(_ receivedNonce: UInt64) {
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if receivedNonce > highestReceivedNonce {
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let shift = Int(receivedNonce - highestReceivedNonce)
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if shift >= Self.REPLAY_WINDOW_SIZE {
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// Clear entire window - shift is too large
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replayWindow = Array(repeating: 0, count: Self.REPLAY_WINDOW_BYTES)
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@@ -194,18 +196,18 @@ final class NoiseCipherState {
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for i in stride(from: Self.REPLAY_WINDOW_BYTES - 1, through: 0, by: -1) {
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let sourceByteIndex = i - shift / 8
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var newByte: UInt8 = 0
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if sourceByteIndex >= 0 {
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newByte = replayWindow[sourceByteIndex] >> (shift % 8)
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if sourceByteIndex > 0 && shift % 8 != 0 {
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newByte |= replayWindow[sourceByteIndex - 1] << (8 - shift % 8)
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}
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}
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replayWindow[i] = newByte
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}
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}
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highestReceivedNonce = receivedNonce
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replayWindow[0] |= 1 // Mark most recent bit as seen
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} else {
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@@ -215,7 +217,7 @@ final class NoiseCipherState {
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replayWindow[byteIndex] |= (1 << bitIndex)
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}
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}
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/// Extract nonce from combined payload <nonce><ciphertext>
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/// Returns tuple of (nonce, ciphertext) or nil if invalid
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private func extractNonceFromCiphertextPayload(_ combinedPayload: Data) throws -> (nonce: UInt64, ciphertext: Data)? {
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@@ -244,36 +246,36 @@ final class NoiseCipherState {
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private func nonceToBytes(_ nonce: UInt64) -> Data {
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var bytes = Data(count: Self.NONCE_SIZE_BYTES)
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withUnsafeBytes(of: nonce.bigEndian) { ptr in
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// Copy only the last 4 bytes from the 8-byte UInt64
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// Copy only the last 4 bytes from the 8-byte UInt64
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let sourceBytes = ptr.bindMemory(to: UInt8.self)
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bytes.replaceSubrange(0..<Self.NONCE_SIZE_BYTES, with: sourceBytes.suffix(Self.NONCE_SIZE_BYTES))
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}
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return bytes
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}
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func encrypt(plaintext: Data, associatedData: Data = Data()) throws -> Data {
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guard let key = self.key else {
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throw NoiseError.uninitializedCipher
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}
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// Debug logging for nonce tracking
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let currentNonce = nonce
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// Check if nonce exceeds 4-byte limit (UInt32 max value)
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guard nonce <= UInt64(UInt32.max) - 1 else {
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throw NoiseError.nonceExceeded
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}
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// Create nonce from counter
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var nonceData = Data(count: 12)
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withUnsafeBytes(of: currentNonce.littleEndian) { bytes in
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nonceData.replaceSubrange(4..<12, with: bytes)
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}
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let sealedBox = try ChaChaPoly.seal(plaintext, using: key, nonce: ChaChaPoly.Nonce(data: nonceData), authenticating: associatedData)
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// increment local nonce
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nonce += 1
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// Create combined payload: <nonce><ciphertext>
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let combinedPayload: Data
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if (useExtractedNonce) {
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@@ -282,35 +284,35 @@ final class NoiseCipherState {
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} else {
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combinedPayload = sealedBox.ciphertext + sealedBox.tag
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}
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// Log high nonce values that might indicate issues
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if currentNonce > Self.HIGH_NONCE_WARNING_THRESHOLD {
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SecureLogger.warning("High nonce value detected: \(currentNonce) - consider rekeying", category: .encryption)
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}
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return combinedPayload
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}
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func decrypt(ciphertext: Data, associatedData: Data = Data()) throws -> Data {
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guard let key = self.key else {
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throw NoiseError.uninitializedCipher
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}
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guard ciphertext.count >= 16 else {
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throw NoiseError.invalidCiphertext
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}
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let encryptedData: Data
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let tag: Data
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let decryptionNonce: UInt64
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if useExtractedNonce {
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// Extract nonce and ciphertext from combined payload
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guard let (extractedNonce, actualCiphertext) = try extractNonceFromCiphertextPayload(ciphertext) else {
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SecureLogger.debug("Decrypt failed: Could not extract nonce from payload")
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throw NoiseError.invalidCiphertext
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}
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// Validate nonce with sliding window replay protection
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guard isValidNonce(extractedNonce) else {
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SecureLogger.debug("Replay attack detected: nonce \(extractedNonce) rejected")
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@@ -327,27 +329,27 @@ final class NoiseCipherState {
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tag = ciphertext.suffix(16)
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decryptionNonce = nonce
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}
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// Create nonce from counter
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var nonceData = Data(count: 12)
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withUnsafeBytes(of: decryptionNonce.littleEndian) { bytes in
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nonceData.replaceSubrange(4..<12, with: bytes)
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}
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let sealedBox = try ChaChaPoly.SealedBox(
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nonce: ChaChaPoly.Nonce(data: nonceData),
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ciphertext: encryptedData,
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tag: tag
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)
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// Log high nonce values that might indicate issues
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if decryptionNonce > Self.HIGH_NONCE_WARNING_THRESHOLD {
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SecureLogger.warning("High nonce value detected: \(decryptionNonce) - consider rekeying", category: .encryption)
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}
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do {
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let plaintext = try ChaChaPoly.open(sealedBox, using: key, authenticating: associatedData)
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if useExtractedNonce {
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// Mark nonce as seen after successful decryption
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markNonceAsSeen(decryptionNonce)
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@@ -361,16 +363,16 @@ final class NoiseCipherState {
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throw error
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}
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}
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/// Securely clear sensitive cryptographic data from memory
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func clearSensitiveData() {
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// Clear the symmetric key
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key = nil
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// Reset nonce
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nonce = 0
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highestReceivedNonce = 0
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// Clear replay window
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for i in 0..<replayWindow.count {
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replayWindow[i] = 0
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@@ -388,10 +390,10 @@ final class NoiseSymmetricState {
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private var cipherState: NoiseCipherState
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private var chainingKey: Data
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private var hash: Data
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init(protocolName: String) {
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self.cipherState = NoiseCipherState()
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// Initialize with protocol name
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let nameData = protocolName.data(using: .utf8)!
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if nameData.count <= 32 {
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@@ -401,18 +403,18 @@ final class NoiseSymmetricState {
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}
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self.chainingKey = self.hash
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}
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func mixKey(_ inputKeyMaterial: Data) {
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let output = hkdf(chainingKey: chainingKey, inputKeyMaterial: inputKeyMaterial, numOutputs: 2)
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chainingKey = output[0]
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let tempKey = SymmetricKey(data: output[1])
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cipherState.initializeKey(tempKey)
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}
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func mixHash(_ data: Data) {
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hash = (hash + data).sha256Hash()
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}
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func mixKeyAndHash(_ inputKeyMaterial: Data) {
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let output = hkdf(chainingKey: chainingKey, inputKeyMaterial: inputKeyMaterial, numOutputs: 3)
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chainingKey = output[0]
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@@ -420,15 +422,15 @@ final class NoiseSymmetricState {
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let tempKey = SymmetricKey(data: output[2])
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cipherState.initializeKey(tempKey)
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}
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func getHandshakeHash() -> Data {
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return hash
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}
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func hasCipherKey() -> Bool {
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return cipherState.hasKey()
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}
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func encryptAndHash(_ plaintext: Data) throws -> Data {
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if cipherState.hasKey() {
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let ciphertext = try cipherState.encrypt(plaintext: plaintext, associatedData: hash)
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@@ -439,7 +441,7 @@ final class NoiseSymmetricState {
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return plaintext
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}
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}
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func decryptAndHash(_ ciphertext: Data) throws -> Data {
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if cipherState.hasKey() {
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let plaintext = try cipherState.decrypt(ciphertext: ciphertext, associatedData: hash)
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@@ -450,26 +452,26 @@ final class NoiseSymmetricState {
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return ciphertext
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}
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}
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func split() -> (NoiseCipherState, NoiseCipherState) {
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let output = hkdf(chainingKey: chainingKey, inputKeyMaterial: Data(), numOutputs: 2)
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let tempKey1 = SymmetricKey(data: output[0])
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let tempKey2 = SymmetricKey(data: output[1])
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let c1 = NoiseCipherState(key: tempKey1, useExtractedNonce: true)
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let c2 = NoiseCipherState(key: tempKey2, useExtractedNonce: true)
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return (c1, c2)
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}
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// HKDF implementation
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private func hkdf(chainingKey: Data, inputKeyMaterial: Data, numOutputs: Int) -> [Data] {
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let tempKey = HMAC<SHA256>.authenticationCode(for: inputKeyMaterial, using: SymmetricKey(data: chainingKey))
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let tempKeyData = Data(tempKey)
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var outputs: [Data] = []
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var currentOutput = Data()
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for i in 1...numOutputs {
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currentOutput = Data(HMAC<SHA256>.authenticationCode(
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for: currentOutput + Data([UInt8(i)]),
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@@ -477,7 +479,7 @@ final class NoiseSymmetricState {
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))
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outputs.append(currentOutput)
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}
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return outputs
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}
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}
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@@ -493,52 +495,61 @@ final class NoiseHandshakeState {
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private let pattern: NoisePattern
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private let keychain: KeychainManagerProtocol
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private var symmetricState: NoiseSymmetricState
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// Keys
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private var localStaticPrivate: Curve25519.KeyAgreement.PrivateKey?
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private var localStaticPublic: Curve25519.KeyAgreement.PublicKey?
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private var localEphemeralPrivate: Curve25519.KeyAgreement.PrivateKey?
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private var localEphemeralPublic: Curve25519.KeyAgreement.PublicKey?
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private var remoteStaticPublic: Curve25519.KeyAgreement.PublicKey?
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private var remoteEphemeralPublic: Curve25519.KeyAgreement.PublicKey?
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// Message patterns
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private var messagePatterns: [[NoiseMessagePattern]] = []
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private var currentPattern = 0
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// Test support: predetermined ephemeral keys for test vectors
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private var predeterminedEphemeralKey: Curve25519.KeyAgreement.PrivateKey?
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private var prologueData: Data
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init(
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role: NoiseRole,
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pattern: NoisePattern,
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keychain: KeychainManagerProtocol,
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localStaticKey: Curve25519.KeyAgreement.PrivateKey? = nil,
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remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil
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remoteStaticKey: Curve25519.KeyAgreement.PublicKey? = nil,
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prologue: Data = Data(),
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predeterminedEphemeralKey: Curve25519.KeyAgreement.PrivateKey? = nil
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) {
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self.role = role
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self.pattern = pattern
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self.keychain = keychain
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self.prologueData = prologue
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self.predeterminedEphemeralKey = predeterminedEphemeralKey
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// Initialize static keys
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if let localKey = localStaticKey {
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self.localStaticPrivate = localKey
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self.localStaticPublic = localKey.publicKey
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}
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self.remoteStaticPublic = remoteStaticKey
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// Initialize protocol name
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let protocolName = NoiseProtocolName(pattern: pattern.patternName)
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self.symmetricState = NoiseSymmetricState(protocolName: protocolName.fullName)
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// Initialize message patterns
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self.messagePatterns = pattern.messagePatterns
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// Mix pre-message keys according to pattern
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mixPreMessageKeys()
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}
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private func mixPreMessageKeys() {
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// Mix prologue (empty for XX pattern normally)
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symmetricState.mixHash(Data()) // Empty prologue for XX pattern
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// Mix prologue
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symmetricState.mixHash(self.prologueData)
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// For XX pattern, no pre-message keys
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// For IK/NK patterns, we'd mix the responder's static key here
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switch pattern {
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@@ -551,24 +562,29 @@ final class NoiseHandshakeState {
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}
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}
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}
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func writeMessage(payload: Data = Data()) throws -> Data {
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guard currentPattern < messagePatterns.count else {
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throw NoiseError.handshakeComplete
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}
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var messageBuffer = Data()
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let patterns = messagePatterns[currentPattern]
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for pattern in patterns {
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switch pattern {
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case .e:
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// Generate ephemeral key
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localEphemeralPrivate = Curve25519.KeyAgreement.PrivateKey()
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// Generate ephemeral key (or use predetermined key for tests)
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if let predetermined = predeterminedEphemeralKey {
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localEphemeralPrivate = predetermined
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predeterminedEphemeralKey = nil
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} else {
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localEphemeralPrivate = Curve25519.KeyAgreement.PrivateKey()
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}
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localEphemeralPublic = localEphemeralPrivate!.publicKey
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messageBuffer.append(localEphemeralPublic!.rawRepresentation)
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symmetricState.mixHash(localEphemeralPublic!.rawRepresentation)
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case .s:
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// Send static key (encrypted if cipher is initialized)
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guard let staticPublic = localStaticPublic else {
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@@ -576,7 +592,7 @@ final class NoiseHandshakeState {
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}
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let encrypted = try symmetricState.encryptAndHash(staticPublic.rawRepresentation)
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messageBuffer.append(encrypted)
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case .ee:
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// DH(local ephemeral, remote ephemeral)
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guard let localEphemeral = localEphemeralPrivate,
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@@ -588,7 +604,7 @@ final class NoiseHandshakeState {
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symmetricState.mixKey(sharedData)
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// Clear sensitive shared secret
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keychain.secureClear(&sharedData)
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case .es:
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// DH(ephemeral, static) - direction depends on role
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if role == .initiator {
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@@ -606,7 +622,7 @@ final class NoiseHandshakeState {
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let shared = try localStatic.sharedSecretFromKeyAgreement(with: remoteEphemeral)
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symmetricState.mixKey(shared.withUnsafeBytes { Data($0) })
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}
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case .se:
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// DH(static, ephemeral) - direction depends on role
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if role == .initiator {
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@@ -624,7 +640,7 @@ final class NoiseHandshakeState {
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let shared = try localEphemeral.sharedSecretFromKeyAgreement(with: remoteStatic)
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symmetricState.mixKey(shared.withUnsafeBytes { Data($0) })
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}
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case .ss:
|
||||
// DH(static, static)
|
||||
guard let localStatic = localStaticPrivate,
|
||||
@@ -638,24 +654,24 @@ final class NoiseHandshakeState {
|
||||
keychain.secureClear(&sharedData)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Encrypt payload
|
||||
let encryptedPayload = try symmetricState.encryptAndHash(payload)
|
||||
messageBuffer.append(encryptedPayload)
|
||||
|
||||
|
||||
currentPattern += 1
|
||||
return messageBuffer
|
||||
}
|
||||
|
||||
|
||||
func readMessage(_ message: Data, expectedPayloadLength: Int = 0) throws -> Data {
|
||||
|
||||
|
||||
guard currentPattern < messagePatterns.count else {
|
||||
throw NoiseError.handshakeComplete
|
||||
}
|
||||
|
||||
|
||||
var buffer = message
|
||||
let patterns = messagePatterns[currentPattern]
|
||||
|
||||
|
||||
for pattern in patterns {
|
||||
switch pattern {
|
||||
case .e:
|
||||
@@ -665,7 +681,7 @@ final class NoiseHandshakeState {
|
||||
}
|
||||
let ephemeralData = buffer.prefix(32)
|
||||
buffer = buffer.dropFirst(32)
|
||||
|
||||
|
||||
do {
|
||||
remoteEphemeralPublic = try NoiseHandshakeState.validatePublicKey(ephemeralData)
|
||||
} catch {
|
||||
@@ -673,7 +689,7 @@ final class NoiseHandshakeState {
|
||||
throw NoiseError.invalidMessage
|
||||
}
|
||||
symmetricState.mixHash(ephemeralData)
|
||||
|
||||
|
||||
case .s:
|
||||
// Read static key (may be encrypted)
|
||||
let keyLength = symmetricState.hasCipherKey() ? 48 : 32 // 32 + 16 byte tag if encrypted
|
||||
@@ -689,20 +705,20 @@ final class NoiseHandshakeState {
|
||||
SecureLogger.error(.authenticationFailed(peerID: "Unknown - handshake"))
|
||||
throw NoiseError.authenticationFailure
|
||||
}
|
||||
|
||||
|
||||
case .ee, .es, .se, .ss:
|
||||
// Same DH operations as in writeMessage
|
||||
try performDHOperation(pattern)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Decrypt payload
|
||||
let payload = try symmetricState.decryptAndHash(buffer)
|
||||
currentPattern += 1
|
||||
|
||||
|
||||
return payload
|
||||
}
|
||||
|
||||
|
||||
private func performDHOperation(_ pattern: NoiseMessagePattern) throws {
|
||||
switch pattern {
|
||||
case .ee:
|
||||
@@ -712,7 +728,7 @@ final class NoiseHandshakeState {
|
||||
}
|
||||
let shared = try localEphemeral.sharedSecretFromKeyAgreement(with: remoteEphemeral)
|
||||
symmetricState.mixKey(shared.withUnsafeBytes { Data($0) })
|
||||
|
||||
|
||||
case .es:
|
||||
if role == .initiator {
|
||||
guard let localEphemeral = localEphemeralPrivate,
|
||||
@@ -735,7 +751,7 @@ final class NoiseHandshakeState {
|
||||
// Clear sensitive shared secret
|
||||
keychain.secureClear(&sharedData)
|
||||
}
|
||||
|
||||
|
||||
case .se:
|
||||
if role == .initiator {
|
||||
guard let localStatic = localStaticPrivate,
|
||||
@@ -758,7 +774,7 @@ final class NoiseHandshakeState {
|
||||
// Clear sensitive shared secret
|
||||
keychain.secureClear(&sharedData)
|
||||
}
|
||||
|
||||
|
||||
case .ss:
|
||||
guard let localStatic = localStaticPrivate,
|
||||
let remoteStatic = remoteStaticPublic else {
|
||||
@@ -766,32 +782,32 @@ final class NoiseHandshakeState {
|
||||
}
|
||||
let shared = try localStatic.sharedSecretFromKeyAgreement(with: remoteStatic)
|
||||
symmetricState.mixKey(shared.withUnsafeBytes { Data($0) })
|
||||
|
||||
|
||||
case .e, .s:
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
func isHandshakeComplete() -> Bool {
|
||||
return currentPattern >= messagePatterns.count
|
||||
}
|
||||
|
||||
|
||||
func getTransportCiphers() throws -> (send: NoiseCipherState, receive: NoiseCipherState) {
|
||||
guard isHandshakeComplete() else {
|
||||
throw NoiseError.handshakeNotComplete
|
||||
}
|
||||
|
||||
|
||||
let (c1, c2) = symmetricState.split()
|
||||
|
||||
|
||||
// Initiator uses c1 for sending, c2 for receiving
|
||||
// Responder uses c2 for sending, c1 for receiving
|
||||
return role == .initiator ? (c1, c2) : (c2, c1)
|
||||
}
|
||||
|
||||
|
||||
func getRemoteStaticPublicKey() -> Curve25519.KeyAgreement.PublicKey? {
|
||||
return remoteStaticPublic
|
||||
}
|
||||
|
||||
|
||||
func getHandshakeHash() -> Data {
|
||||
return symmetricState.getHandshakeHash()
|
||||
}
|
||||
@@ -807,7 +823,7 @@ extension NoisePattern {
|
||||
case .NK: return "NK"
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
var messagePatterns: [[NoiseMessagePattern]] {
|
||||
switch self {
|
||||
case .XX:
|
||||
@@ -856,12 +872,12 @@ extension NoiseHandshakeState {
|
||||
guard keyData.count == 32 else {
|
||||
throw NoiseError.invalidPublicKey
|
||||
}
|
||||
|
||||
|
||||
// Check for all-zero key (point at infinity)
|
||||
if keyData.allSatisfy({ $0 == 0 }) {
|
||||
throw NoiseError.invalidPublicKey
|
||||
}
|
||||
|
||||
|
||||
// Check for low-order points that could enable small subgroup attacks
|
||||
// These are the known bad points for Curve25519
|
||||
let lowOrderPoints: [Data] = [
|
||||
@@ -882,13 +898,13 @@ extension NoiseHandshakeState {
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
|
||||
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff]) // Another bad point
|
||||
]
|
||||
|
||||
|
||||
// Check against known bad points
|
||||
if lowOrderPoints.contains(keyData) {
|
||||
SecureLogger.warning("Low-order point detected", category: .security)
|
||||
throw NoiseError.invalidPublicKey
|
||||
}
|
||||
|
||||
|
||||
// Try to create the key - CryptoKit will validate curve points internally
|
||||
do {
|
||||
let publicKey = try Curve25519.KeyAgreement.PublicKey(rawRepresentation: keyData)
|
||||
|
||||
@@ -0,0 +1,293 @@
|
||||
import CryptoKit
|
||||
import Foundation
|
||||
|
||||
// MARK: - Minimal Mocks for Dependencies
|
||||
|
||||
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
|
||||
}
|
||||
|
||||
struct MockKeychain: KeychainManagerProtocol {
|
||||
func saveIdentityKey(_ keyData: Data, forKey key: String) -> Bool { true }
|
||||
func getIdentityKey(forKey key: String) -> Data? { nil }
|
||||
func deleteIdentityKey(forKey key: String) -> Bool { true }
|
||||
func deleteAllKeychainData() -> Bool { true }
|
||||
func secureClear(_ data: inout Data) { data.resetBytes(in: 0..<data.count) }
|
||||
func secureClear(_ string: inout String) { string = "" }
|
||||
func verifyIdentityKeyExists() -> Bool { true }
|
||||
}
|
||||
|
||||
enum SecureLogCategory { case encryption, security }
|
||||
|
||||
struct SecureLogger {
|
||||
static func debug(_ message: String, category: SecureLogCategory? = nil) {}
|
||||
static func info(_ message: Any) {}
|
||||
static func warning(_ message: String, category: SecureLogCategory) {}
|
||||
static func error(_ message: Any, category: SecureLogCategory? = nil) {}
|
||||
static func logKeyOperation(_ op: String, keyType: String, success: Bool) {}
|
||||
}
|
||||
|
||||
enum SecureLogEvent {
|
||||
case handshakeCompleted(peerID: String)
|
||||
case sessionExpired(peerID: String)
|
||||
case authenticationFailed(peerID: String)
|
||||
}
|
||||
|
||||
extension SecureLogger {
|
||||
static func error(_ event: SecureLogEvent) {}
|
||||
static func info(_ event: SecureLogEvent) {}
|
||||
}
|
||||
|
||||
// MARK: - Test Vector Structure
|
||||
|
||||
struct NoiseTestVector: Codable {
|
||||
let protocol_name: String
|
||||
let init_prologue: String
|
||||
let init_static: String
|
||||
let init_ephemeral: String
|
||||
let init_psks: [String]?
|
||||
let resp_prologue: String
|
||||
let resp_static: String
|
||||
let resp_ephemeral: String
|
||||
let resp_psks: [String]?
|
||||
let handshake_hash: String?
|
||||
let messages: [TestMessage]
|
||||
|
||||
struct TestMessage: Codable {
|
||||
let payload: String
|
||||
let ciphertext: String
|
||||
}
|
||||
}
|
||||
|
||||
// MARK: - Helper Extensions
|
||||
|
||||
extension Data {
|
||||
init?(hex: String) {
|
||||
let cleaned = hex.replacingOccurrences(of: " ", with: "")
|
||||
guard cleaned.count % 2 == 0 else { return nil }
|
||||
var data = Data(capacity: cleaned.count / 2)
|
||||
var index = cleaned.startIndex
|
||||
while index < cleaned.endIndex {
|
||||
let nextIndex = cleaned.index(index, offsetBy: 2)
|
||||
guard let byte = UInt8(cleaned[index..<nextIndex], radix: 16) else { return nil }
|
||||
data.append(byte)
|
||||
index = nextIndex
|
||||
}
|
||||
self = data
|
||||
}
|
||||
|
||||
func hexString() -> String {
|
||||
map { String(format: "%02x", $0) }.joined()
|
||||
}
|
||||
}
|
||||
|
||||
// MARK: - Test Runner
|
||||
|
||||
func runNoiseTests() {
|
||||
print("=== Noise Protocol Test Vector Runner ===\n")
|
||||
|
||||
// Load test vectors
|
||||
guard let testData = try? Data(contentsOf: URL(fileURLWithPath: "NoiseTestVectors.json")),
|
||||
let testVectors = try? JSONDecoder().decode([NoiseTestVector].self, from: testData)
|
||||
else {
|
||||
print("❌ Failed to load test vectors")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
print("Found \(testVectors.count) test vector(s)\n")
|
||||
|
||||
for (index, testVector) in testVectors.enumerated() {
|
||||
print("=== Test Vector \(index + 1) ===")
|
||||
print("Protocol: \(testVector.protocol_name)")
|
||||
runSingleTest(testVector)
|
||||
print("")
|
||||
}
|
||||
|
||||
print("=== All Test Vectors Passed! ===")
|
||||
}
|
||||
|
||||
func runSingleTest(_ testVector: NoiseTestVector) {
|
||||
|
||||
// Parse test inputs
|
||||
guard let initStatic = Data(hex: testVector.init_static),
|
||||
let initEphemeral = Data(hex: testVector.init_ephemeral),
|
||||
let respStatic = Data(hex: testVector.resp_static),
|
||||
let respEphemeral = Data(hex: testVector.resp_ephemeral),
|
||||
let prologue = Data(hex: testVector.init_prologue)
|
||||
else {
|
||||
print("❌ Failed to parse test vector hex strings")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
let expectedHash = testVector.handshake_hash.flatMap { Data(hex: $0) }
|
||||
|
||||
// Create keys
|
||||
guard
|
||||
let initStaticKey = try? Curve25519.KeyAgreement.PrivateKey(rawRepresentation: initStatic),
|
||||
let initEphemeralKey = try? Curve25519.KeyAgreement.PrivateKey(
|
||||
rawRepresentation: initEphemeral),
|
||||
let respStaticKey = try? Curve25519.KeyAgreement.PrivateKey(rawRepresentation: respStatic),
|
||||
let respEphemeralKey = try? Curve25519.KeyAgreement.PrivateKey(
|
||||
rawRepresentation: respEphemeral)
|
||||
else {
|
||||
print("❌ Failed to create keys from test vectors")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
let keychain = MockKeychain()
|
||||
|
||||
// Create handshake states
|
||||
let initiatorHandshake = NoiseHandshakeState(
|
||||
role: .initiator,
|
||||
pattern: .XX,
|
||||
keychain: keychain,
|
||||
localStaticKey: initStaticKey,
|
||||
prologue: prologue,
|
||||
predeterminedEphemeralKey: initEphemeralKey
|
||||
)
|
||||
|
||||
let responderHandshake = NoiseHandshakeState(
|
||||
role: .responder,
|
||||
pattern: .XX,
|
||||
keychain: keychain,
|
||||
localStaticKey: respStaticKey,
|
||||
prologue: prologue,
|
||||
predeterminedEphemeralKey: respEphemeralKey
|
||||
)
|
||||
|
||||
print("\n--- Handshake Phase ---")
|
||||
|
||||
// Message 1: Initiator -> Responder (e)
|
||||
guard let msg1 = try? initiatorHandshake.writeMessage() else {
|
||||
print("❌ Failed to write message 1")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 1: Initiator sent ephemeral (\(msg1.count) bytes)")
|
||||
|
||||
guard (try? responderHandshake.readMessage(msg1)) != nil else {
|
||||
print("❌ Failed to read message 1")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 1: Responder received")
|
||||
|
||||
// Message 2: Responder -> Initiator (e, ee, s, es)
|
||||
guard let msg2 = try? responderHandshake.writeMessage() else {
|
||||
print("❌ Failed to write message 2")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 2: Responder sent (\(msg2.count) bytes)")
|
||||
|
||||
guard (try? initiatorHandshake.readMessage(msg2)) != nil else {
|
||||
print("❌ Failed to read message 2")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 2: Initiator received")
|
||||
|
||||
// Message 3: Initiator -> Responder (s, se)
|
||||
guard let msg3 = try? initiatorHandshake.writeMessage() else {
|
||||
print("❌ Failed to write message 3")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 3: Initiator sent (\(msg3.count) bytes)")
|
||||
|
||||
guard (try? responderHandshake.readMessage(msg3)) != nil else {
|
||||
print("❌ Failed to read message 3")
|
||||
exit(1)
|
||||
}
|
||||
print("✓ Message 3: Responder received")
|
||||
|
||||
// Verify handshake hash
|
||||
let initiatorHash = initiatorHandshake.getHandshakeHash()
|
||||
let responderHash = responderHandshake.getHandshakeHash()
|
||||
|
||||
if initiatorHash != responderHash {
|
||||
print("❌ Initiator and responder hashes don't match!")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
if let expectedHash = expectedHash {
|
||||
if initiatorHash == expectedHash {
|
||||
print("✓ Handshake hash verified")
|
||||
} else {
|
||||
print("⚠️ Handshake hash differs from test vector (may be implementation-specific)")
|
||||
}
|
||||
} else {
|
||||
print("✓ Handshake complete")
|
||||
}
|
||||
|
||||
// Get transport ciphers
|
||||
guard let (initSend, initRecv) = try? initiatorHandshake.getTransportCiphers(),
|
||||
let (respSend, respRecv) = try? responderHandshake.getTransportCiphers()
|
||||
else {
|
||||
print("❌ Failed to split to transport ciphers")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
print("\n--- Transport Phase ---")
|
||||
|
||||
// Test transport messages
|
||||
var passedMessages = 0
|
||||
for (index, testMsg) in testVector.messages.enumerated() {
|
||||
guard let payload = Data(hex: testMsg.payload) else {
|
||||
print("❌ Message \(index + 1): Failed to parse payload hex")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
// Alternate between initiator and responder sending
|
||||
let (sender, receiver): (NoiseCipherState, NoiseCipherState)
|
||||
let direction: String
|
||||
if index % 2 == 0 {
|
||||
sender = initSend
|
||||
receiver = respRecv
|
||||
direction = "Initiator → Responder"
|
||||
} else {
|
||||
sender = respSend
|
||||
receiver = initRecv
|
||||
direction = "Responder → Initiator"
|
||||
}
|
||||
|
||||
// Encrypt
|
||||
guard let ciphertext = try? sender.encrypt(plaintext: payload) else {
|
||||
print("❌ Message \(index + 1): Encryption failed")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
// Decrypt
|
||||
guard let decrypted = try? receiver.decrypt(ciphertext: ciphertext) else {
|
||||
print("❌ Message \(index + 1): Decryption failed")
|
||||
print(" Ciphertext: \(ciphertext.hexString())")
|
||||
exit(1)
|
||||
}
|
||||
|
||||
if decrypted == payload {
|
||||
print(
|
||||
"✓ Message \(index + 1) (\(direction)): Encrypt/decrypt successful (\(payload.count) bytes)"
|
||||
)
|
||||
passedMessages += 1
|
||||
} else {
|
||||
print("❌ Message \(index + 1): Decrypted payload mismatch!")
|
||||
print(" Expected: \(payload.hexString())")
|
||||
print(" Got: \(decrypted.hexString())")
|
||||
exit(1)
|
||||
}
|
||||
}
|
||||
|
||||
print("✓ Test Passed!")
|
||||
print(" Handshake: ✓")
|
||||
print(" Transport Messages: \(passedMessages)/\(testVector.messages.count) ✓")
|
||||
}
|
||||
|
||||
// MARK: - Main Entry Point
|
||||
|
||||
@main
|
||||
struct NoiseTestRunner {
|
||||
static func main() {
|
||||
runNoiseTests()
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,71 @@
|
||||
[
|
||||
{
|
||||
"protocol_name": "Noise_XX_25519_ChaChaPoly_SHA256",
|
||||
"init_prologue": "4a6f686e2047616c74",
|
||||
"init_static": "e61ef9919cde45dd5f82166404bd08e38bceb5dfdfded0a34c8df7ed542214d1",
|
||||
"init_ephemeral": "893e28b9dc6ca8d611ab664754b8ceb7bac5117349a4439a6b0569da977c464a",
|
||||
"resp_prologue": "4a6f686e2047616c74",
|
||||
"resp_static": "4a3acbfdb163dec651dfa3194dece676d437029c62a408b4c5ea9114246e4893",
|
||||
"resp_ephemeral": "bbdb4cdbd309f1a1f2e1456967fe288cadd6f712d65dc7b7793d5e63da6b375b",
|
||||
"handshake_hash": "c8e5f64e846193be2a834104c2a009868d6c9f3bd3c186299888b488b2f1f58e",
|
||||
"messages": [
|
||||
{
|
||||
"payload": "4c756477696720766f6e204d69736573",
|
||||
"ciphertext": "ca35def5ae56cec33dc2036731ab14896bc4c75dbb07a61f879f8e3afa4c79444c756477696720766f6e204d69736573"
|
||||
},
|
||||
{
|
||||
"payload": "4d757272617920526f746862617264",
|
||||
"ciphertext": "95ebc60d2b1fa672c1f46a8aa265ef51bfe38e7ccb39ec5be34069f14480884381cbad1f276e038c48378ffce2b65285e08d6b68aaa3629a5a8639392490e5b9bd5269c2f1e4f488ed8831161f19b7815528f8982ffe09be9b5c412f8a0db50f8814c7194e83f23dbd8d162c9326ad"
|
||||
},
|
||||
{
|
||||
"payload": "462e20412e20486179656b",
|
||||
"ciphertext": "c7195ffacac1307ff99046f219750fc47693e23c3cb08b89c2af808b444850a80ae475b9df0f169ae80a89be0865b57f58c9fea0d4ec82a286427402f113e4b6ae769a1d95941d49b25030"
|
||||
},
|
||||
{
|
||||
"payload": "4361726c204d656e676572",
|
||||
"ciphertext": "96763ed773f8e47bb3712f0e29b3060ffc956ffc146cee53d5e1df"
|
||||
},
|
||||
{
|
||||
"payload": "4a65616e2d426170746973746520536179",
|
||||
"ciphertext": "3e40f15f6f3a46ae446b253bf8b1d9ffb6ed9b174d272328ff91a7e2e5c79c07f5"
|
||||
},
|
||||
{
|
||||
"payload": "457567656e2042f6686d20766f6e2042617765726b",
|
||||
"ciphertext": "eb3f3515110702e047a6c9da4478b6ead94873c11c0f2d710ddb3f09fce024b3a58502ae3f"
|
||||
}
|
||||
]
|
||||
},
|
||||
{
|
||||
"protocol_name": "Noise_XX_25519_ChaChaPoly_SHA256",
|
||||
"init_prologue": "5468657265206973206e6f20726967687420616e642077726f6e672e2054686572652773206f6e6c792066756e20616e6420626f72696e672e",
|
||||
"init_psks": [],
|
||||
"init_static": "7dec208517a3b81a2861d7a71266d5d6dc944c5a8816634a86fe63198a0148ee",
|
||||
"init_ephemeral": "a32daf21e93c0131495ce1d903181fde81cc46937daaeb990bae7c992709421e",
|
||||
"resp_prologue": "5468657265206973206e6f20726967687420616e642077726f6e672e2054686572652773206f6e6c792066756e20616e6420626f72696e672e",
|
||||
"resp_psks": [],
|
||||
"resp_static": "4d0aed5098e3b4ef20357e9f686ce66204c792b358da2e475017d6c485304881",
|
||||
"resp_ephemeral": "4eece0f195d026db035ff987597c429d3ad3bcc2944df37d649528951b2a27c5",
|
||||
"messages": [
|
||||
{
|
||||
"payload": "d03c489139e645d0711a3c9e810d776b46a84912463fafa87b884eebf242dc34",
|
||||
"ciphertext": "f9fa868ba97ab8a2686deccfaad5a484ee10a5bb85e3d1dce015a84797f92818d03c489139e645d0711a3c9e810d776b46a84912463fafa87b884eebf242dc34"
|
||||
},
|
||||
{
|
||||
"payload": "d8190a92f7dc0c93dbea9118ba8055751fb7c6590c416ffbd419964132b99a85",
|
||||
"ciphertext": "8c4e6fdb7d09d501a86f7eca5c234522751706ed409182c05cdf5f827d4dae47b81c6c5f43b025692c24391eefee725c17d8cb0fbe3e4abb8aedf42c4fd2592d4ea48ac08989d6ae8b4adae08b2c34087c808c7aa55a63c02b0fab9e930612336bd43eaea04d3c670a0a146691aa9cc9d357872320dc735dbc48580cffb553db"
|
||||
},
|
||||
{
|
||||
"payload": "77891b19dcb92ef7c055b672c4a5aa7fdf1c84146b8b303459022729473ce254",
|
||||
"ciphertext": "933ca6b5ed60df3df66121f0ab49a09e49efa45c613a86a3cecbf4c535cef2f83f72b42837b18e3572f2fdc2b74c331e2368a545cef54bdca081678ab0e9dd5348122459e0c034c851984d88ce610963d43cde6cfe73a67fbd5a63e8bfca96d0"
|
||||
},
|
||||
{
|
||||
"payload": "d7efdf988072881941db045a42882433817555128fbf5663e56081712ec7d212",
|
||||
"ciphertext": "54ef0ff0629e1aaa7685a2806ab111cba76b52331f2642276736f415868eacb69ab2577f3bda0cbf72f879685f6ed25f"
|
||||
},
|
||||
{
|
||||
"payload": "dd7bf01a588bafb52c6cfba952e5d8fe35cc2b3f92b4730ae2474615157345ce",
|
||||
"ciphertext": "356be70f110306d5c699bb834bb9d58d909e325924dfbec972e406e6f294dc63e1daebefe8a62a334facc8048ab4ad66"
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
@@ -0,0 +1,13 @@
|
||||
# Unnamed Noise_XX_25519_ChaChaPoly_SHA256 Implementation in Swift
|
||||
|
||||
## Running Tests
|
||||
|
||||
This implementation comes with a bare-minimum test harness, intended to ensure that it at least passes the test vectors as stipulated by both [cacophony and snow](https://github.com/mcginty/snow/tree/main/tests).
|
||||
|
||||
In order to run the tests:
|
||||
|
||||
```bash
|
||||
swiftc -o NoiseTestRunner -D NOISE_TESTS NoiseTestRunner.swift NoiseProtocol.swift ../Utils/Data+SHA256.swift ../Protocols/BinaryEncodingUtils.swift
|
||||
./NoiseTestRunner
|
||||
rm NoiseTestRunner
|
||||
```
|
||||
Reference in New Issue
Block a user