Blowfish

__gshared immutable immutable(char)[][] test_keys = [
    "0000000000000000",
    "ffffffffffffffff",
    "57686f206973204a6f686e2047616c743f", // I don't know, do you?
    "1111111111111111",
    "0123456789abcdef",
    "1111111111111111",
    "fedcba9876543210"
];

__gshared immutable immutable(char)[][] test_plaintexts = [
    "0000000000000000",
    "ffffffffffffffff",
    "fedcba9876543210",
    "1111111111111111",
    "1111111111111111",
    "0123456789abcdef",
    "0123456789abcdef"
];

__gshared immutable immutable(char)[][] test_ciphertexts = [
    "4ef997456198dd78",
    "51866fd5b85ecb8a",
    "cc91732b8022f684",
    "2466dd878b963c9d",
    "61f9c3802281b096",
    "7d0cc630afda1ec7",
    "0aceab0fc6a0a28d"
];

Blowfish t = new Blowfish();
foreach (uint i, immutable(char)[] test_key; test_keys)
{
    ubyte[] buffer = new ubyte[t.blockSize];
    char[] result;
    auto key = ByteConverter.hexDecode(test_key);

    // Encryption
    t.init(true, key);
    t.update(ByteConverter.hexDecode(test_plaintexts[i]), buffer);
    result = ByteConverter.hexEncode(buffer);
    assert(result == test_ciphertexts[i],
            t.name~": ("~result~") != ("~test_ciphertexts[i]~")");

    // Decryption
    t.init(false, key);
    t.update(ByteConverter.hexDecode(test_ciphertexts[i]), buffer);
    result = ByteConverter.hexEncode(buffer);
    assert(result == test_plaintexts[i],
            t.name~": ("~result~") != ("~test_plaintexts[i]~")");
}