@ecash/lib/dist/pbkdf2.js

Library for eCash transaction building

"use strict";
// Copyright (c) 2025 The Bitcoin developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
Object.defineProperty(exports, "__esModule", { value: true });
exports.pbkdf2 = void 0;
const hmac_1 = require("./hmac");
function pbkdf2(params) {
    const arr = new Uint8Array(4);
    const view = new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
    const result = new Uint8Array(params.dkLen);
    const prf = new hmac_1.Hmac(params.hashFactory, params.blockLength, params.password);
    const prfSalt = prf.clone();
    prfSalt.update(params.salt);
    for (let idx = 1, pos = 0; pos < params.dkLen; idx++, pos += params.outputLength) {
        const ti = result.subarray(pos, pos + params.outputLength);
        view.setInt32(0, idx, false);
        const prfSaltClone = prfSalt.clone();
        prfSaltClone.update(arr);
        let u = prfSaltClone.digest();
        ti.set(u.subarray(0, ti.length));
        for (let ui = 1; ui < params.iterations; ui++) {
            const prfClone = prf.clone();
            prfClone.update(u);
            u = prfClone.digest();
            for (let i = 0; i < ti.length; i++) {
                ti[i] ^= u[i];
            }
        }
    }
    prf.free();
    prfSalt.free();
    return result;
}
exports.pbkdf2 = pbkdf2;
//# sourceMappingURL=pbkdf2.js.map