Files
bitchat/bitchat/Noise/NoiseSecurityConstants.swift
T
Islamandjack 790dcda8e5 Refactor Noise: Extract files and remove dead code (#806)
* Extract each type to a separate file

* NoiseSessionManager: Remove unused functions

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Co-authored-by: jack <212554440+jackjackbits@users.noreply.github.com>
2025-10-15 00:33:35 +01:00

38 lines
1.2 KiB
Swift

//
// NoiseSecurityConstants.swift
// bitchat
//
// This is free and unencumbered software released into the public domain.
// For more information, see <https://unlicense.org>
//
import Foundation
enum NoiseSecurityConstants {
// Maximum message size to prevent memory exhaustion
static let maxMessageSize = 65535 // 64KB as per Noise spec
// Maximum handshake message size
static let maxHandshakeMessageSize = 2048 // 2KB to accommodate XX pattern
// Session timeout - sessions older than this should be renegotiated
static let sessionTimeout: TimeInterval = 86400 // 24 hours
// Maximum number of messages before rekey (2^64 - 1 is the nonce limit)
static let maxMessagesPerSession: UInt64 = 1_000_000_000 // 1 billion messages
// Handshake timeout - abandon incomplete handshakes
static let handshakeTimeout: TimeInterval = 60 // 1 minute
// Maximum concurrent sessions per peer
static let maxSessionsPerPeer = 3
// Rate limiting
static let maxHandshakesPerMinute = 10
static let maxMessagesPerSecond = 100
// Global rate limiting (across all peers)
static let maxGlobalHandshakesPerMinute = 30
static let maxGlobalMessagesPerSecond = 500
}