test.js

var xtea = require("../xtea");
var Buffer = require("buffer").Buffer;
var test = require("tape");

test('XTEA ECB encryption', function (t) {
    var buf = new Buffer([1,2,3]);
    var key = new Buffer([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]);
    var enc = xtea.encrypt(buf, key);
    var dec = xtea.decrypt(enc, key);

    t.notDeepEqual(enc, buf, "ciphertext should not equal plaintext");
    t.deepEqual(dec, buf, "decrypted text should equal plaintext");

    enc = xtea.encrypt(new Buffer("test vector 1"), new Buffer("super secret key"));
    t.deepEqual(enc, new Buffer([223,83,148,252,243,87,191,226,116,252,121,16,154,53,112,203]), "test vector 1");

    enc = xtea.encrypt(new Buffer("00000000"), new Buffer("super secret key"));
    t.deepEqual(enc, new Buffer([113,181,178,30,196,40,107,136,191,240,216,226,16,148,62,88]), "test vector 2");

    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"));
    t.deepEqual(enc, new Buffer([113,181,178,30,196,40,107,136,113,181,178,30,196,40,107,136,191,240,216,226,16,148,62,88]), "test vector 3");

    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"), 'ecb', false, true);
    t.deepEqual(enc, new Buffer([113,181,178,30,196,40,107,136,113,181,178,30,196,40,107,136]), "test vector 4 (skipped padding)");

    t.end();
})

test('XTEA CBC encryption', function (t) {
    var buf = new Buffer([1,2,3]);
    var key = new Buffer([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]);
    var iv  = new Buffer([8,7,6,5,4,3,2,1]);
    var enc = xtea.encrypt(buf, key, "cbc", iv);
    var dec = xtea.decrypt(enc, key, "cbc", iv);
    t.notDeepEqual(enc, buf, "ciphertext should not equal plaintext");
    t.deepEqual(dec, buf, "decrypted text should equal plaintext");

    enc = xtea.encrypt(new Buffer("test vector 1"), new Buffer("super secret key"), "cbc", new Buffer("iv_value"));
    t.deepEqual(enc, new Buffer([125,198,23,180,230,255,169,214,221,5,37,102,118,82,92,220]), "test vector 1");

    enc = xtea.encrypt(new Buffer("00000000"), new Buffer("super secret key"), "cbc", new Buffer("iv_value"));
    t.deepEqual(enc, new Buffer([203,190,233,189,122,108,38,122,69,155,94,70,225,197,145,101]), "test vector 2");

    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"), "cbc", new Buffer("iv_value"));
    t.deepEqual(enc, new Buffer("cbbee9bd7a6c267ad17f4720f3eb70f31707672103db54d5", "hex"), "test vector 3");
    
    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"), "cbc", new Buffer("iv_value"), true);
    t.deepEqual(enc, new Buffer("cbbee9bd7a6c267ad17f4720f3eb70f3", "hex"), "test vector 4 (skipped padding)");

    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"), "cbc");
    t.deepEqual(enc, new Buffer("71b5b21ec4286b88920efa7cefa8b058fd5975f97b442b69", "hex"), "test vector 5 (not specified iv)");

    enc = xtea.encrypt(new Buffer("0000000000000000"), new Buffer("super secret key"), "cbc", false, true);
    t.deepEqual(enc, new Buffer("71b5b21ec4286b88920efa7cefa8b058", "hex"), "test vector 6 (not specified iv, skipped padding)");

    t.throws(function() {
        xtea.encrypt(new Buffer("00000000000000"), new Buffer("super secret key"), "cbc", false, true);
    }, "test vector 7 (skipped padding, invalid block length)");

    t.end();
})