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package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.Mac;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.engines.AESFastEngine;
import org.bouncycastle.crypto.engines.BlowfishEngine;
import org.bouncycastle.crypto.engines.DESEngine;
import org.bouncycastle.crypto.engines.DESedeEngine;
import org.bouncycastle.crypto.engines.RijndaelEngine;
import org.bouncycastle.crypto.engines.Shacal2Engine;
import org.bouncycastle.crypto.macs.CMac;
import org.bouncycastle.crypto.macs.CMacWithIV;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.ParametersWithIV;
import org.bouncycastle.util.Strings;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
/**
* CMAC tester - Official Test Vectors.
*/
public class CMacTest
extends SimpleTest
{
private static final byte[] keyBytes128 = Hex.decode("2b7e151628aed2a6abf7158809cf4f3c");
private static final byte[] keyBytes192 = Hex.decode(
"8e73b0f7da0e6452c810f32b809079e5"
+ "62f8ead2522c6b7b");
private static final byte[] keyBytes256 = Hex.decode(
"603deb1015ca71be2b73aef0857d7781"
+ "1f352c073b6108d72d9810a30914dff4");
private static final byte[] input0 = Hex.decode("");
private static final byte[] input16 = Hex.decode("6bc1bee22e409f96e93d7e117393172a");
private static final byte[] input40 = Hex.decode(
"6bc1bee22e409f96e93d7e117393172a"
+ "ae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411");
private static final byte[] input64 = Hex.decode(
"6bc1bee22e409f96e93d7e117393172a"
+ "ae2d8a571e03ac9c9eb76fac45af8e51"
+ "30c81c46a35ce411e5fbc1191a0a52ef"
+ "f69f2445df4f9b17ad2b417be66c3710");
private static final byte[] output_k128_m0 = Hex.decode("bb1d6929e95937287fa37d129b756746");
private static final byte[] output_k128_m16 = Hex.decode("070a16b46b4d4144f79bdd9dd04a287c");
private static final byte[] output_k128_m40 = Hex.decode("dfa66747de9ae63030ca32611497c827");
private static final byte[] output_k128_m64 = Hex.decode("51f0bebf7e3b9d92fc49741779363cfe");
private static final byte[] output_k192_m0 = Hex.decode("d17ddf46adaacde531cac483de7a9367");
private static final byte[] output_k192_m16 = Hex.decode("9e99a7bf31e710900662f65e617c5184");
private static final byte[] output_k192_m40 = Hex.decode("8a1de5be2eb31aad089a82e6ee908b0e");
private static final byte[] output_k192_m64 = Hex.decode("a1d5df0eed790f794d77589659f39a11");
private static final byte[] output_k256_m0 = Hex.decode("028962f61b7bf89efc6b551f4667d983");
private static final byte[] output_k256_m16 = Hex.decode("28a7023f452e8f82bd4bf28d8c37c35c");
private static final byte[] output_k256_m40 = Hex.decode("aaf3d8f1de5640c232f5b169b9c911e6");
private static final byte[] output_k256_m64 = Hex.decode("e1992190549f6ed5696a2c056c315410");
private static final byte[] output_des_ede = Hex.decode("1ca670dea381d37c");
private static final byte[] general_input = Strings.toByteArray("The quick brown fox jumps over the lazy dog.");
public CMacTest()
{
}
public void performTest()
{
BlockCipher cipher = new AESFastEngine();
Mac mac = new CMac(cipher, 128);
//128 bytes key
KeyParameter key = new KeyParameter(keyBytes128);
// 0 bytes message - 128 bytes key
mac.init(key);
mac.update(input0, 0, input0.length);
byte[] out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k128_m0))
{
fail("Failed - expected " + new String(Hex.encode(output_k128_m0))
+ " got " + new String(Hex.encode(out)));
}
// 16 bytes message - 128 bytes key
mac.init(key);
mac.update(input16, 0, input16.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k128_m16))
{
fail("Failed - expected " + new String(Hex.encode(output_k128_m16))
+ " got " + new String(Hex.encode(out)));
}
// 40 bytes message - 128 bytes key
mac.init(key);
mac.update(input40, 0, input40.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k128_m40))
{
fail("Failed - expected " + new String(Hex.encode(output_k128_m40))
+ " got " + new String(Hex.encode(out)));
}
// 64 bytes message - 128 bytes key
mac.init(key);
mac.update(input64, 0, input64.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k128_m64))
{
fail("Failed - expected " + new String(Hex.encode(output_k128_m64))
+ " got " + new String(Hex.encode(out)));
}
//192 bytes key
key = new KeyParameter(keyBytes192);
// 0 bytes message - 192 bytes key
mac.init(key);
mac.update(input0, 0, input0.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k192_m0))
{
fail("Failed - expected " + new String(Hex.encode(output_k192_m0))
+ " got " + new String(Hex.encode(out)));
}
// 16 bytes message - 192 bytes key
mac.init(key);
mac.update(input16, 0, input16.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k192_m16))
{
fail("Failed - expected " + new String(Hex.encode(output_k192_m16))
+ " got " + new String(Hex.encode(out)));
}
// 40 bytes message - 192 bytes key
mac.init(key);
mac.update(input40, 0, input40.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k192_m40))
{
fail("Failed - expected " + new String(Hex.encode(output_k192_m40))
+ " got " + new String(Hex.encode(out)));
}
// 64 bytes message - 192 bytes key
mac.init(key);
mac.update(input64, 0, input64.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k192_m64))
{
fail("Failed - expected " + new String(Hex.encode(output_k192_m64))
+ " got " + new String(Hex.encode(out)));
}
//256 bytes key
key = new KeyParameter(keyBytes256);
// 0 bytes message - 256 bytes key
mac.init(key);
mac.update(input0, 0, input0.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k256_m0))
{
fail("Failed - expected " + new String(Hex.encode(output_k256_m0))
+ " got " + new String(Hex.encode(out)));
}
// 16 bytes message - 256 bytes key
mac.init(key);
mac.update(input16, 0, input16.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k256_m16))
{
fail("Failed - expected " + new String(Hex.encode(output_k256_m16))
+ " got " + new String(Hex.encode(out)));
}
// 40 bytes message - 256 bytes key
mac.init(key);
mac.update(input40, 0, input40.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k256_m40))
{
fail("Failed - expected " + new String(Hex.encode(output_k256_m40))
+ " got " + new String(Hex.encode(out)));
}
// 64 bytes message - 256 bytes key
mac.init(key);
mac.update(input64, 0, input64.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k256_m64))
{
fail("Failed - expected " + new String(Hex.encode(output_k256_m64))
+ " got " + new String(Hex.encode(out)));
}
// CMAC with IV
// 16 bytes message - 256 bytes key
mac = new CMacWithIV(new AESFastEngine());
mac.init(key);
mac.update(input16, 0, input16.length);
out = new byte[16];
mac.doFinal(out, 0);
if (!areEqual(out, output_k256_m16))
{
fail("Failed - expected " + new String(Hex.encode(output_k256_m16))
+ " got " + new String(Hex.encode(out)));
}
// CMAC with IV
// 16 bytes message - 256 bytes key
mac = new CMacWithIV(new AESFastEngine());
mac.init(new ParametersWithIV(key, Hex.decode("000102030405060708090a0b0c0d0e0f")));
mac.update(input16, 0, input16.length);
out = new byte[16];
mac.doFinal(out, 0);
if (areEqual(out, output_k256_m16))
{
fail("Failed - got " + new String(Hex.encode(output_k256_m16)));
}
if (!areEqual(out, Hex.decode("9347a60c64061b9ff2a92522ca8e08fc")))
{
fail("Failed - expected " + "9347a60c64061b9ff2a92522ca8e08fc"
+ " got " + new String(Hex.encode(out)));
}
testCMac(new DESedeEngine(), keyBytes128, input0, output_des_ede);
testCMac(new RijndaelEngine(), "2b7e151628aed2a6abf7158809cf4f3c", "682b9b57e769cc63231cf778c5c76646");
testCMac(new RijndaelEngine(192), "2b7e151628aed2a6abf7158809cf4f3c", "2a11b6bdd1e4f8b6127c2960859ae73ede59c7200d77ff45");
testCMac(new RijndaelEngine(256), "2b7e151628aed2a6abf7158809cf4f3c", "316d1df4084ada3e10b26266ae1fdae170a9d824ab37e981f06227c80c80fddd");
testCMac(new BlowfishEngine(), "2b7e151628aed2a6abf7158809cf4f3c", "875d73b9bc3de78a");
testCMac(new DESEngine(), "2b7e151628aed2a6", "3cc3a242585e49f9");
testCMac(new Shacal2Engine(), "2b7e151628aed2a6abf7158809cf4f3c", "794b2766cd0d550877f1ded48ab74f9ddff20f32e6d69fae8a1ede4205e7d640");
testExceptions();
}
private void testCMac(BlockCipher cipher, String keyBytes, String expected)
{
testCMac(cipher, Hex.decode(keyBytes), general_input, Hex.decode(expected));
}
private void testCMac(BlockCipher cipher, byte[] keyBytes, byte[] input, byte[] expected)
{
Mac mac = new CMac(cipher, cipher.getBlockSize() * 8);
KeyParameter key = new KeyParameter(keyBytes);
mac.init(key);
mac.update(input, 0, input.length);
byte[] out = new byte[mac.getMacSize()];
mac.doFinal(out, 0);
if (!areEqual(out, expected))
{
fail("Failed - expected " + Strings.fromByteArray(Hex.encode(expected)) + " got " + new String(Hex.encode(out)));
}
}
private void testExceptions()
{
try
{
CMac mac = new CMac(new AESEngine());
mac.init(new ParametersWithIV(new KeyParameter(new byte[16]), new byte[16]));
fail("CMac does not accept IV");
} catch(IllegalArgumentException e)
{
// Expected
}
}
public String getName()
{
return "CMac";
}
public static void main(String[] args)
{
runTest(new CMacTest());
}
}