tests.js•4.7 kB
"use strict";
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var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
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return (mod && mod.__esModule) ? mod : { "default": mod };
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Object.defineProperty(exports, "__esModule", { value: true });
const assert_1 = __importDefault(require("assert"));
const fs_1 = __importDefault(require("fs"));
const path_1 = require("path");
const aes = __importStar(require("./index.js"));
const root = (function () {
let root = process.cwd();
while (true) {
if (fs_1.default.existsSync((0, path_1.join)(root, "package.json"))) {
return root;
}
const parent = (0, path_1.join)(root, "..");
if (parent === root) {
break;
}
root = parent;
}
throw new Error("could not find root");
})();
describe("Tests Encrypting and Decrypting", function () {
const json = fs_1.default.readFileSync((0, path_1.resolve)(root, "./test/test-vectors.json")).toString();
const tests = JSON.parse(json);
function getCrypter(key, test) {
switch (test.modeOfOperation) {
case "ctr":
return new aes.CTR(key, 0);
case "cbc":
return new aes.CBC(key, Buffer.from(test.iv));
case "cfb":
return new aes.CFB(key, Buffer.from(test.iv), test.segmentSize * 8);
case "ecb":
return new aes.ECB(key);
case "ofb":
return new aes.OFB(key, Buffer.from(test.iv));
}
return null;
}
tests.forEach((test, index) => {
it(`tests encrypting: ${test.modeOfOperation}.${index}`, function () {
const encrypter = getCrypter(Buffer.from(test.key), test);
if (!encrypter) {
this.skip();
}
for (let i = 0; i < test.plaintext.length; i++) {
const plaintext = Buffer.from(test.plaintext[i]);
const ciphertext = Buffer.from(test.encrypted[i]);
const result = Buffer.from(encrypter.encrypt(plaintext));
assert_1.default.ok(ciphertext.equals(result), "encrypting failed");
}
});
it(`tests decrypting: ${test.modeOfOperation}.${index}`, function () {
const decrypter = getCrypter(Buffer.from(test.key), test);
if (!decrypter) {
this.skip();
}
for (let i = 0; i < test.plaintext.length; i++) {
const plaintext = Buffer.from(test.plaintext[i]);
const ciphertext = Buffer.from(test.encrypted[i]);
const result = Buffer.from(decrypter.decrypt(ciphertext));
assert_1.default.ok(plaintext.equals(result), "decrypting failed");
}
});
});
});
describe("Tests Padding", function () {
for (let size = 0; size < 100; size++) {
it(`tests padding: length=${size}`, function () {
// Create a random piece of data
const data = new Uint8Array(size);
data.fill(42);
// Pad it
const padded = aes.pkcs7Pad(data);
assert_1.default.ok((padded.length % 16) === 0, "Failed to pad to block size");
assert_1.default.ok(data.length <= padded.length && padded.length <= data.length + 16, "Padding went awry");
assert_1.default.ok(padded[padded.length - 1] >= 1 && padded[padded.length - 1] <= 16, "Failed to pad to block size");
// Trim it
const trimmed = aes.pkcs7Strip(padded);
assert_1.default.ok(Buffer.from(data).equals(trimmed), "Failed to trim to original data");
});
}
});
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