49 lines
1.6 KiB
JavaScript
49 lines
1.6 KiB
JavaScript
/**
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* A **Password-Based Key-Derivation Function** is designed to create
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* a sequence of bytes suitible as a **key** from a human-rememberable
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* password.
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*
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* @_subsection: api/crypto:Passwords [about-pbkdf]
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*/
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import { pbkdf2Sync } from "./crypto.js";
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import { getBytes, hexlify } from "../utils/index.js";
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let locked = false;
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const _pbkdf2 = function (password, salt, iterations, keylen, algo) {
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return pbkdf2Sync(password, salt, iterations, keylen, algo);
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};
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let __pbkdf2 = _pbkdf2;
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/**
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* Return the [[link-pbkdf2]] for %%keylen%% bytes for %%password%% using
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* the %%salt%% and using %%iterations%% of %%algo%%.
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*
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* This PBKDF is outdated and should not be used in new projects, but is
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* required to decrypt older files.
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*
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* @example:
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* // The password must be converted to bytes, and it is generally
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* // best practices to ensure the string has been normalized. Many
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* // formats explicitly indicate the normalization form to use.
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* password = "hello"
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* passwordBytes = toUtf8Bytes(password, "NFKC")
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*
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* salt = id("some-salt")
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*
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* // Compute the PBKDF2
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* pbkdf2(passwordBytes, salt, 1024, 16, "sha256")
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* //_result:
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*/
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export function pbkdf2(_password, _salt, iterations, keylen, algo) {
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const password = getBytes(_password, "password");
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const salt = getBytes(_salt, "salt");
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return hexlify(__pbkdf2(password, salt, iterations, keylen, algo));
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}
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pbkdf2._ = _pbkdf2;
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pbkdf2.lock = function () { locked = true; };
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pbkdf2.register = function (func) {
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if (locked) {
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throw new Error("pbkdf2 is locked");
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}
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__pbkdf2 = func;
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};
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Object.freeze(pbkdf2);
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//# sourceMappingURL=pbkdf2.js.map
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