22 lines
837 B
JavaScript
22 lines
837 B
JavaScript
// Copyright BigchainDB GmbH and BigchainDB contributors
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// SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
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// Code is Apache-2.0 and docs are CC-BY-4.0
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import base58 from 'bs58'
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import { sign } from 'tweetnacl'
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/**
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* @public
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* Ed25519 keypair in base58 (as BigchainDB expects base58 keys)
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* @type {Object}
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* @param {Buffer} [seed] A seed that will be used as a key derivation function
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* @property {string} publicKey
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* @property {string} privateKey
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*/
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export default function Ed25519Keypair(seed) {
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const keyPair = seed ? sign.keyPair.fromSeed(seed) : sign.keyPair()
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this.publicKey = base58.encode(Buffer.from(keyPair.publicKey))
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// tweetnacl's generated secret key is the secret key + public key (resulting in a 64-byte buffer)
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this.privateKey = base58.encode(Buffer.from(keyPair.secretKey.slice(0, 32)))
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}
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