mirror of
https://github.com/fluencelabs/js-libp2p-crypto
synced 2025-03-15 21:01:04 +00:00
0b686d363c
* chore: add error codes * chore: create errors with new Error() * fix: better error testin * refactor: simplify random bytes error checks
46 lines
1.1 KiB
JavaScript
46 lines
1.1 KiB
JavaScript
'use strict'
|
|
|
|
const forgePbkdf2 = require('node-forge/lib/pbkdf2')
|
|
const forgeUtil = require('node-forge/lib/util')
|
|
const errcode = require('err-code')
|
|
|
|
/**
|
|
* Maps an IPFS hash name to its node-forge equivalent.
|
|
*
|
|
* See https://github.com/multiformats/multihash/blob/master/hashtable.csv
|
|
*
|
|
* @private
|
|
*/
|
|
const hashName = {
|
|
sha1: 'sha1',
|
|
'sha2-256': 'sha256',
|
|
'sha2-512': 'sha512'
|
|
}
|
|
|
|
/**
|
|
* Computes the Password-Based Key Derivation Function 2.
|
|
*
|
|
* @param {string} password
|
|
* @param {string} salt
|
|
* @param {number} iterations
|
|
* @param {number} keySize (in bytes)
|
|
* @param {string} hash - The hash name ('sha1', 'sha2-512, ...)
|
|
* @returns {string} - A new password
|
|
*/
|
|
function pbkdf2 (password, salt, iterations, keySize, hash) {
|
|
const hasher = hashName[hash]
|
|
if (!hasher) {
|
|
const types = Object.keys(hashName).join(' / ')
|
|
throw errcode(new Error(`Hash '${hash}' is unknown or not supported. Must be ${types}`), 'ERR_UNSUPPORTED_HASH_TYPE')
|
|
}
|
|
const dek = forgePbkdf2(
|
|
password,
|
|
salt,
|
|
iterations,
|
|
keySize,
|
|
hasher)
|
|
return forgeUtil.encode64(dek)
|
|
}
|
|
|
|
module.exports = pbkdf2
|