Encryption
Vector's Supported Encryption Methods
Encryption Types
secp256k1 for key exchange & signing
XChaCha20-Poly1305 for message encryption
AES-256-GCM for file encryption
Argon2id for password protection
ChaCha20-Poly1305 for local storage encryption
Symmetric Encryption
For Message/Data Protection
XChaCha20-Poly1305: NIP-44 encrypted DMs (the main E2E encryption)
AES-256-GCM: file/attachment encryption in DMs
ChaCha20-Poly1305: local database encryption (messages, keys, secrets stored on-device)
Asymmetric Cryptography
For Identity & Signing
secp256k1: Nostr keypair generation + event signing (ECDSA)
Key Derivation & Hashing
Argon2id: password-based key derivation (150MB memory, 10 iterations — very strong)
SHA-256: file hashing, various protocol operations
BIP39: 12-word seed phrase generation for account recovery
Protocols
NIP-44: modern encrypted DMs
NIP-59: gift wrap (hides metadata with ephemeral keys)
NIP-17: private DM delivery
Concord: end-to-end encryption for group messaging
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