mirror of
https://github.com/fluencelabs/js-libp2p-crypto
synced 2025-03-16 01:11:08 +00:00
43 lines
926 B
JavaScript
43 lines
926 B
JavaScript
'use strict'
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const forge = require('node-forge')
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/**
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* Maps an IPFS hash name to its node-forge equivalent.
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*
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* See https://github.com/multiformats/multihash/blob/master/hashtable.csv
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*
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* @private
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*/
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const hashName = {
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sha1: 'sha1',
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'sha2-256': 'sha256',
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'sha2-512': 'sha512'
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}
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/**
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* Computes the Password-Based Key Derivation Function 2.
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*
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* @param {string} password
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* @param {string} salt
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* @param {number} iterations
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* @param {number} keySize (in bytes)
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* @param {string} hash - The hash name ('sha1', 'sha2-512, ...)
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* @returns {string} - A new password
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*/
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function pbkdf2 (password, salt, iterations, keySize, hash) {
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const hasher = hashName[hash]
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if (!hasher) {
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throw new Error(`Hash '${hash}' is unknown or not supported`)
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}
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const dek = forge.pkcs5.pbkdf2(
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password,
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salt,
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iterations,
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keySize,
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hasher)
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return forge.util.encode64(dek)
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}
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module.exports = pbkdf2
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