@session.js/keypair

Session messenger & Session.js keypairs utilities.

type Keypair

Keypair is a pair of two Sodium's KeyPairs: x25519 (curve25519) and ed25519

type Keypair = {
  x25519: sodium.KeyPair
  ed25519: sodium.KeyPair
}

Session ID consists of x25519's public key prepended with 05.

Ed25519 keypairs are used mainly for messages encryption.

getKeypairFromSeed

Converts seed hex to Keypair:

import { getKeypairFromSeed } from '@session.js/keypair'

const keypairs = getKeypairFromSeed('39038c8988db02c1af44e8c847bd9713')
console.log(keypairs.x25519.publicKey) // => 0548054830367d369d94605247999a375dbd0a0f65fdec5de1535612bcb6d4de452c69

generateSeedHex

Generates random seed and converts it to hex. Under the hood it uses sodium.randombytes_buf.

import { generateSeedHex } from '@session.js/keypair'

const seed = await generateSeedHex()
console.log(seed) // => 39038c8988db02c1af44e8c847bd9713

Made for session.js

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