@logismika/crypto
Version:
Crypto algorithms library
107 lines (106 loc) • 5.03 kB
JavaScript
;
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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Object.defineProperty(exports, "__esModule", { value: true });
exports.expandKey_testPack = exports.expandKey = void 0;
const R = __importStar(require("ramda"));
const common_1 = require("./common");
const expandKey = (key) => typeof key === "string" ? expandKeyString(key) : expandKeyArray(key);
exports.expandKey = expandKey;
const expandKeyString = (key) => __awaiter(void 0, void 0, void 0, function* () { return expandKeyArray(yield (0, common_1.digestMessage)(key)); });
const expandKeyArray = (key) => {
if (key.length !== common_1.KEY_SIZE) {
throw new Error(`Key's length must be ${common_1.KEY_SIZE}.`);
}
const result = {
iter_c: GOST_Kuz_Get_C(),
iter_key: R.range(0, 10).map(() => new Uint8Array(common_1.BLOCK_SIZE)),
};
const key_1 = key.slice(common_1.KEY_SIZE / 2);
const key_2 = key.slice(0, common_1.KEY_SIZE / 2);
result.iter_key[0] = key_1.slice();
result.iter_key[1] = key_2.slice();
let iter_1 = key_1.slice();
let iter_2 = key_2.slice();
let iter_3;
let iter_4;
for (let i = 0; i < 4; i += 1) {
const retVal1 = GOST_Kuz_F(iter_1, iter_2, result.iter_c[0 + 8 * i]);
iter_3 = retVal1.out_key_1;
iter_4 = retVal1.out_key_2;
const retVal2 = GOST_Kuz_F(iter_3, iter_4, result.iter_c[1 + 8 * i]);
iter_1 = retVal2.out_key_1;
iter_2 = retVal2.out_key_2;
const retVal3 = GOST_Kuz_F(iter_1, iter_2, result.iter_c[2 + 8 * i]);
iter_3 = retVal3.out_key_1;
iter_4 = retVal3.out_key_2;
const retVal4 = GOST_Kuz_F(iter_3, iter_4, result.iter_c[3 + 8 * i]);
iter_1 = retVal4.out_key_1;
iter_2 = retVal4.out_key_2;
const retVal5 = GOST_Kuz_F(iter_1, iter_2, result.iter_c[4 + 8 * i]);
iter_3 = retVal5.out_key_1;
iter_4 = retVal5.out_key_2;
const retVal6 = GOST_Kuz_F(iter_3, iter_4, result.iter_c[5 + 8 * i]);
iter_1 = retVal6.out_key_1;
iter_2 = retVal6.out_key_2;
const retVal7 = GOST_Kuz_F(iter_1, iter_2, result.iter_c[6 + 8 * i]);
iter_3 = retVal7.out_key_1;
iter_4 = retVal7.out_key_2;
const retVal8 = GOST_Kuz_F(iter_3, iter_4, result.iter_c[7 + 8 * i]);
iter_1 = retVal8.out_key_1;
iter_2 = retVal8.out_key_2;
result.iter_key[2 * i + 2] = iter_1.slice();
result.iter_key[2 * i + 3] = iter_2.slice();
}
return result;
};
const GOST_Kuz_Get_C = () => {
const result = R.range(0, 32).map(() => new Uint8Array(common_1.BLOCK_SIZE));
const iter_num = R.range(0, 32).map(() => new Uint8Array(common_1.BLOCK_SIZE));
for (let i = 0; i < iter_num.length; i++) {
iter_num[i][0] = (0, common_1.toByte)(i + 1);
}
for (let i = 0; i < result.length; i++) {
result[i] = (0, common_1.GOST_Kuz_L)(iter_num[i]);
}
return result;
};
const GOST_Kuz_F = (in_key_1, in_key_2, iter_const) => {
const out_key_2 = in_key_1.slice();
const intrl1 = (0, common_1.GOST_Kuz_X)(in_key_1, iter_const);
const intrl2 = (0, common_1.GOST_Kuz_S)(intrl1);
const intrl3 = (0, common_1.GOST_Kuz_L)(intrl2);
const out_key_1 = (0, common_1.GOST_Kuz_X)(intrl3, in_key_2);
return { out_key_1, out_key_2 };
};
exports.expandKey_testPack = { GOST_Kuz_Get_C, GOST_Kuz_F };