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https://github.com/pezkuwichain/pezkuwi-common.git
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14 lines
676 B
JavaScript
14 lines
676 B
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.secp256k1DeriveHard = secp256k1DeriveHard;
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const util_1 = require("@pezkuwi/util");
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const asU8a_js_1 = require("../blake2/asU8a.js");
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const HDKD = (0, util_1.compactAddLength)((0, util_1.stringToU8a)('Secp256k1HDKD'));
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function secp256k1DeriveHard(seed, chainCode) {
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if (!(0, util_1.isU8a)(chainCode) || chainCode.length !== 32) {
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throw new Error('Invalid chainCode passed to derive');
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}
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// NOTE This is specific to the Substrate HDD derivation, so always use the blake2 hasher
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return (0, asU8a_js_1.blake2AsU8a)((0, util_1.u8aConcat)(HDKD, seed, chainCode), 256);
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}
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