Nofuture.go - Post-Quantum Cryptographic System

MemGuard Initialization & Configuration

memguard.CatchInterrupt()
memguard.Purge()
unix.Mlockall(unix.MCL_CURRENT | unix.MCL_FUTURE)

• Secure Memory Locking: Prevents swapping sensitive data to disk
• Interrupt Handling: Automatic memory purge on SIGINT/SIGTERM
• Deep Memory Purge: Secure wiping of allocated buffers

MemGuard in Key Lifecycle Management

passphrase, _ := memguard.NewImmutableRandom(32)
defer passphrase.Destroy()

• Immutable Buffers: Write-protected memory regions
• Ephemeral Storage: Keys exist only in protected memory
• Automatic Destruction: Guaranteed wipe with defer

Enclave-Based Cryptography

func deriveEnclaveKey(passphrase *memguard.Enclave) {
    passBuf, _ := passphrase.Open()
    defer passBuf.Destroy()
}

• Double-Layer Protection: Enclave wrapping + locked buffers
• Controlled Exposure: Temporary buffer access patterns
• Zero-Copy Architecture: Minimize memory exposure

Quantum-Safe Key Exchange

pubKey, secKey, _ := quantumKEMKeyPair()
defer pubKey.Destroy()
defer secKey.Destroy()

• MemGuard-Protected Keys:
  • Public Key: Immutable locked buffer
  • Private Key: Enclave-wrapped storage
• Zeroization on Completion: Guaranteed key destruction

Secure Session Management

type QuantumSession struct {
    sessionKey   *memguard.Enclave
    remotePubKey *memguard.Enclave
}

• Enclave-Wrapped Session Keys: Encrypted memory storage
• Forward Secrecy: Ephemeral session keys
• Compartmentalization: Isolated memory regions per session

Memory-Hardened Cryptography

lockedKey, _ := memguard.NewImmutableFromBytes(key)
defer lockedKey.Destroy()

• Argon2 in Protected Memory:
  • Memory-hard derivation in locked buffers
  • Secure salt handling
• Multi-Layer Protection:
  • mlock() system calls
  • MADV_DONTDUMP flags
  • Guard pages

MemGuard Best Practices

• 🔒 Always use defer .Destroy() with LockedBuffers
• 🛡️ Prefer NewImmutable for long-lived secrets
• ⚠️ Never expose Enclave contents to logging
• 🔄 Use rolling buffers for repeated operations
• 🧹 Explicit Purge() after critical operations