src/javascript/crypto/e2e/openpgp/ocfb_test.html

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<!DOCTYPE html>
<title>Unit Test of e2e.openpgp.Ocfb</title>
<script src="../../../../../javascript/closure/base.js"></script>
<script src="test_js_deps-runfiles.js"></script>
<script>
  goog.require('e2e.cipher.Aes');
  goog.require('e2e.openpgp.Ocfb');
  goog.require('e2e.random');
  goog.require('goog.array');
  goog.require('goog.testing.jsunit');
</script>
<script>
  function testConsistencyResync() {
    e2e.random.seedRandomBytesWebCrypto(256);
    var aes = new e2e.cipher.Aes(e2e.cipher.Algorithm.AES128,
                                         {key:goog.array.repeat(0x77, 16)});
    var aesocfb = new e2e.openpgp.Ocfb(aes, true);
    var plaintext = goog.array.repeat(0x66, 51);
    var ciphertext = e2e.async.Result.getValue(aesocfb.encrypt(plaintext));
    var deciphered = e2e.async.Result.getValue(aesocfb.decrypt(ciphertext));
    assertArrayEquals("Consistency in encrypting/decrypting.",
                      plaintext,
                      deciphered);
  }
  function testNoResyncDecryptThrows() {
    var aes = new e2e.cipher.Aes(e2e.cipher.Algorithm.AES128, {key:goog.array.repeat(0x77, 16)});
    var aesocfb = new e2e.openpgp.Ocfb(aes, false);
    var plaintext = goog.array.repeat(0x66, 51);
    var ciphertext = goog.crypt.hexToByteArray(
      "f26a24f487a3abd4d81f8072a1a2924364beba531a6b855f0239cda666eecf3f47c98dc52ea3bfd607" +
      "73f1a40b182577789c0149d3010d84d90f85001e755b79eaaa67a52f");
    assertThrows("OpenPGP-CFB resync=false throws.",
        function () { aesocfb.decrypt(ciphertext); } );
  }
</script>