function getAesCommonFixtures() {
  var plaintext = new Uint8Array([
    84, 104, 105, 115, 32, 115, 112, 101, 99, 105, 102, 105, 99, 97, 116, 105,
    111, 110, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115, 32, 97, 32, 74, 97,
    118, 97, 83, 99, 114, 105, 112, 116, 32, 65, 80, 73, 32, 102, 111, 114, 32,
    112, 101, 114, 102, 111, 114, 109, 105, 110, 103, 32, 98, 97, 115, 105, 99,
    32, 99, 114, 121, 112, 116, 111, 103, 114, 97, 112, 104, 105, 99, 32, 111,
    112, 101, 114, 97, 116, 105, 111, 110, 115, 32, 105, 110, 32, 119, 101, 98,
    32, 97, 112, 112, 108, 105, 99, 97, 116, 105, 111, 110, 115, 44, 32, 115,
    117, 99, 104, 32, 97, 115, 32, 104, 97, 115, 104, 105, 110, 103, 44, 32,
    115, 105, 103, 110, 97, 116, 117, 114, 101, 32, 103, 101, 110, 101, 114, 97,
    116, 105, 111, 110, 32, 97, 110, 100, 32, 118, 101, 114, 105, 102, 105, 99,
    97, 116, 105, 111, 110, 44, 32, 97, 110, 100, 32, 101, 110, 99, 114, 121,
    112, 116, 105, 111, 110, 32, 97, 110, 100, 32, 100, 101, 99, 114, 121, 112,
    116, 105, 111, 110, 46, 32, 65, 100, 100, 105, 116, 105, 111, 110, 97, 108,
    108, 121, 44, 32, 105, 116, 32, 100, 101, 115, 99, 114, 105, 98, 101, 115,
    32, 97, 110, 32, 65, 80, 73, 32, 102, 111, 114, 32, 97, 112, 112, 108, 105,
    99, 97, 116, 105, 111, 110, 115, 32, 116, 111, 32, 103, 101, 110, 101, 114,
    97, 116, 101, 32, 97, 110, 100, 47, 111, 114, 32, 109, 97, 110, 97, 103,
    101, 32, 116, 104, 101, 32, 107, 101, 121, 105, 110, 103, 32, 109, 97, 116,
    101, 114, 105, 97, 108, 32, 110, 101, 99, 101, 115, 115, 97, 114, 121, 32,
    116, 111, 32, 112, 101, 114, 102, 111, 114, 109, 32, 116, 104, 101, 115,
    101, 32, 111, 112, 101, 114, 97, 116, 105, 111, 110, 115, 46, 32, 85, 115,
    101, 115, 32, 102, 111, 114, 32, 116, 104, 105, 115, 32, 65, 80, 73, 32,
    114, 97, 110, 103, 101, 32, 102, 114, 111, 109, 32, 117, 115, 101, 114, 32,
    111, 114, 32, 115, 101, 114, 118, 105, 99, 101, 32, 97, 117, 116, 104, 101,
    110, 116, 105, 99, 97, 116, 105, 111, 110, 44, 32, 100, 111, 99, 117, 109,
    101, 110, 116, 32, 111, 114, 32, 99, 111, 100, 101, 32, 115, 105, 103, 110,
    105, 110, 103, 44, 32, 97, 110, 100, 32, 116, 104, 101, 32, 99, 111, 110,
    102, 105, 100, 101, 110, 116, 105, 97, 108, 105, 116, 121, 32, 97, 110, 100,
    32, 105, 110, 116, 101, 103, 114, 105, 116, 121, 32, 111, 102, 32, 99, 111,
    109, 109, 117, 110, 105, 99, 97, 116, 105, 111, 110, 115, 46,
  ]);

  var keyBytes = {
    128: new Uint8Array([
      222, 192, 212, 252, 191, 60, 71, 65, 200, 146, 218, 189, 28, 212, 192, 78,
    ]),
    192: new Uint8Array([
      208, 238, 131, 65, 63, 68, 196, 63, 186, 208, 61, 207, 166, 18, 99, 152,
      29, 109, 221, 95, 240, 30, 28, 246,
    ]),
    256: new Uint8Array([
      103, 105, 56, 35, 251, 29, 88, 7, 63, 145, 236, 233, 204, 58, 249, 16,
      229, 83, 38, 22, 164, 210, 123, 19, 235, 123, 116, 216, 0, 11, 191, 48,
    ]),
  };

  var additionalData = new Uint8Array([
    84, 104, 101, 114, 101, 32, 97, 114, 101, 32, 55, 32, 102, 117, 114, 116,
    104, 101, 114, 32, 101, 100, 105, 116, 111, 114, 105, 97, 108, 32, 110, 111,
    116, 101, 115, 32, 105, 110, 32, 116, 104, 101, 32, 100, 111, 99, 117, 109,
    101, 110, 116, 46,
  ]);

  return { plaintext, keyBytes, additionalData };
}