deterministic-sealed-box

Usage

const seal = require('deterministic-sealed-box')

// sender side

const message = Buffer.from('som data to seal')
const fixedKey = Buffer.alloc(32, 0xff) // should be fixed for seal to be deterministic

const payload = seal.encrypt(message, recipientPublicKey, fixedKey)

// receiver side

const message = seal.decrypt(message, recipientKeyPair)

API

const keyPair = seal.keyPair([seed])

Generate a key pair, optionally pass a seed

const sealed = seal.encrypt(message, recipient, privateFixedKey)

Create a sealed box. recipient should be the recipients public key. privateFixedKey is 32 bytes.

The output sealed is deterministic over message, recipient and privateFixedKey.

const message = seal.decrypt(message, recipientKeyPair)

Open a sealed box. recipientKeyPair should be the { publicKey, secretKey } corresponding to the public key used to create the seal.

Can also be opened using sodium.crypto_box_seal_open API.

License

Apache-2.0