@logismika/crypto/build/cjs/kuznechik/common/GOST_Kuz_L.js

Crypto algorithms library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.GOST_Kuz_L_testPackage = exports.GOST_Kuz_L = void 0;
const consts_1 = require("./consts");
const GOST_Kuz_GF_mul_1 = require("./GOST_Kuz_GF_mul");
const utils_1 = require("./utils");
const GOST_Kuz_L = (in_data) => {
    let result = in_data.slice();
    for (let i = 0; i < 16; i += 1) {
        result = GOST_Kuz_R(result);
    }
    return result;
};
exports.GOST_Kuz_L = GOST_Kuz_L;
const GOST_Kuz_R = (in_data) => {
    let a_15 = 0;
    const internal = new Uint8Array(16);
    for (let i = 15; i >= 0; i -= 1) {
        if (i > 0) {
            internal[i - 1] = in_data[i];
        }
        a_15 ^= (0, GOST_Kuz_GF_mul_1.GOST_Kuz_GF_mul)((0, utils_1.toByte)(in_data[i]), (0, utils_1.toByte)(consts_1.l_vec[i]));
    }
    internal[15] = (0, utils_1.toByte)(a_15);
    return internal;
};
exports.GOST_Kuz_L_testPackage = { GOST_Kuz_R };