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

Crypto algorithms library

import { l_vec } from "./consts";
import { GOST_Kuz_GF_mul } from "./GOST_Kuz_GF_mul";
import { toByte } from "./utils";
export 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;
};
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 ^= GOST_Kuz_GF_mul(toByte(in_data[i]), toByte(l_vec[i]));
    }
    internal[15] = toByte(a_15);
    return internal;
};
export const GOST_Kuz_L_testPackage = { GOST_Kuz_R };