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@orangecheck/lock-crypto

v0.1.0

Published

X25519 ECDH, HKDF-SHA256, and AES-256-GCM primitives for OC Lock. Narrow crypto surface used by @orangecheck/lock-core and @orangecheck/lock-device.

Downloads

1,027

Vulnerabilities

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  • 0Medium
  • 0Low

Links

Git

Maintainers

ochkochk

Keywords

bitcoinencryptionx25519ecdhaes-gcmoc-lockorangecheck

Readme

@orangecheck/lock-crypto

X25519 ECDH, HKDF-SHA256, and AES-256-GCM primitives for OC Lock.

This package is the narrow crypto surface used by @orangecheck/lock-core and @orangecheck/lock-device. You normally don't import it directly.

Install

npm i @orangecheck/lock-crypto

Exports

| Symbol | Purpose | |---|---| | generateX25519KeyPair() | 32-byte secret + 32-byte public | | x25519Shared(secret, peerPublic) | ECDH shared secret | | hkdfSha256(ikm, salt, info, len) | HKDF per RFC 5869 | | aesGcmEncrypt/Decrypt(key, nonce, data, aad?) | AES-256-GCM authenticated encryption | | randomBytesN(n) | CSPRNG bytes | | sha256Bytes(...chunks) | SHA-256 | | hexEncode/Decode, b64urlEncode/Decode, utf8Encode/Decode, zeroize | Byte utilities |

See the OC Lock specification for how these primitives compose.