mirror of
https://github.com/denoland/deno.git
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135 lines
3.2 KiB
TypeScript
135 lines
3.2 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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/*
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MIT License
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Copyright (c) 2018 cryptocoinjs
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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// TODO(petamoriken): enable prefer-primordials for node polyfills
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// deno-lint-ignore-file prefer-primordials
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import { Buffer } from "node:buffer";
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import { HASH_DATA } from "ext:deno_node/internal/crypto/types.ts";
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const { core } = globalThis.__bootstrap;
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const { ops } = core;
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type Opts = Partial<{
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N: number;
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cost: number;
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p: number;
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parallelization: number;
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r: number;
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blockSize: number;
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maxmem: number;
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}>;
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const fixOpts = (opts?: Opts) => {
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const out = { N: 16384, p: 1, r: 8, maxmem: 32 << 20 };
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if (!opts) return out;
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if (opts.N) out.N = opts.N;
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else if (opts.cost) out.N = opts.cost;
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if (opts.p) out.p = opts.p;
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else if (opts.parallelization) out.p = opts.parallelization;
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if (opts.r) out.r = opts.r;
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else if (opts.blockSize) out.r = opts.blockSize;
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if (opts.maxmem) out.maxmem = opts.maxmem;
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return out;
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};
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export function scryptSync(
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password: HASH_DATA,
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salt: HASH_DATA,
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keylen: number,
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_opts?: Opts,
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): Buffer {
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const { N, r, p, maxmem } = fixOpts(_opts);
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const blen = p * 128 * r;
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if (32 * r * (N + 2) * 4 + blen > maxmem) {
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throw new Error("exceeds max memory");
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}
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const buf = Buffer.alloc(keylen);
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ops.op_node_scrypt_sync(
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password,
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salt,
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keylen,
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Math.log2(N),
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r,
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p,
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maxmem,
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buf.buffer,
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);
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return buf;
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}
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type Callback = (err: unknown, result?: Buffer) => void;
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export function scrypt(
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password: HASH_DATA,
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salt: HASH_DATA,
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keylen: number,
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_opts: Opts | null | Callback,
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cb?: Callback,
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) {
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if (!cb) {
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cb = _opts as Callback;
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_opts = null;
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}
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const { N, r, p, maxmem } = fixOpts(_opts as Opts);
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const blen = p * 128 * r;
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if (32 * r * (N + 2) * 4 + blen > maxmem) {
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throw new Error("exceeds max memory");
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}
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try {
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core.opAsync(
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"op_node_scrypt_async",
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password,
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salt,
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keylen,
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Math.log2(N),
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r,
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p,
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maxmem,
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).then(
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(buf: Uint8Array) => {
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cb(null, Buffer.from(buf.buffer));
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},
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);
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} catch (err: unknown) {
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return cb(err);
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}
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}
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export default {
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scrypt,
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scryptSync,
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};
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