| public ProcessPacket ( byte input, int inOff, int inLen ) : byte[] | ||
| input | byte | |
| inOff | int | |
| inLen | int | |
| return | byte[] | |
public override void PerformTest()
{
CcmBlockCipher ccm = new CcmBlockCipher(new AesEngine());
checkVectors(0, ccm, K1, 32, N1, A1, P1, T1, C1);
checkVectors(1, ccm, K2, 48, N2, A2, P2, T2, C2);
checkVectors(2, ccm, K3, 64, N3, A3, P3, T3, C3);
ivParamTest(0, ccm, K1, N1);
//
// 4 has a reduced associated text which needs to be replicated
//
byte[] a4 = new byte[65536]; // 524288 / 8
for (int i = 0; i < a4.Length; i += A4.Length)
{
Array.Copy(A4, 0, a4, i, A4.Length);
}
checkVectors(3, ccm, K4, 112, N4, a4, P4, T4, C4);
//
// long data test
//
checkVectors(4, ccm, K4, 112, N4, A4, A4, T5, C5);
//
// exception tests
//
try
{
ccm.Init(false, new CcmParameters(new KeyParameter(K1), 32, N2, A2));
ccm.ProcessPacket(C2, 0, C2.Length);
Fail("invalid cipher text not picked up");
}
catch (InvalidCipherTextException)
{
// expected
}
try
{
ccm = new CcmBlockCipher(new DesEngine());
Fail("incorrect block size not picked up");
}
catch (ArgumentException)
{
// expected
}
try
{
ccm.Init(false, new KeyParameter(K1));
Fail("illegal argument not picked up");
}
catch (ArgumentException)
{
// expected
}
}
public override void PerformTest()
{
CcmBlockCipher ccm = new CcmBlockCipher(new AesEngine());
checkVectors(0, ccm, K1, 32, N1, A1, P1, T1, C1);
checkVectors(1, ccm, K2, 48, N2, A2, P2, T2, C2);
checkVectors(2, ccm, K3, 64, N3, A3, P3, T3, C3);
ivParamTest(0, ccm, K1, N1);
//
// 4 has a reduced associated text which needs to be replicated
//
byte[] a4 = new byte[65536]; // 524288 / 8
for (int i = 0; i < a4.Length; i += A4.Length)
{
Array.Copy(A4, 0, a4, i, A4.Length);
}
checkVectors(3, ccm, K4, 112, N4, a4, P4, T4, C4);
//
// long data test
//
checkVectors(4, ccm, K4, 112, N4, A4, A4, T5, C5);
// decryption with output specified, non-zero offset.
ccm.Init(false, new AeadParameters(new KeyParameter(K2), 48, N2, A2));
byte[] inBuf = new byte[C2.Length + 10];
byte[] outBuf = new byte[ccm.GetOutputSize(C2.Length) + 10];
Array.Copy(C2, 0, inBuf, 10, C2.Length);
int len = ccm.ProcessPacket(inBuf, 10, C2.Length, outBuf, 10);
byte[] output = ccm.ProcessPacket(C2, 0, C2.Length);
if (len != output.Length || !isEqual(output, outBuf, 10))
{
Fail("decryption output incorrect");
}
// encryption with output specified, non-zero offset.
ccm.Init(true, new AeadParameters(new KeyParameter(K2), 48, N2, A2));
int inLen = len;
inBuf = outBuf;
outBuf = new byte[ccm.GetOutputSize(inLen) + 10];
len = ccm.ProcessPacket(inBuf, 10, inLen, outBuf, 10);
output = ccm.ProcessPacket(inBuf, 10, inLen);
if (len != output.Length || !isEqual(output, outBuf, 10))
{
Fail("encryption output incorrect");
}
//
// exception tests
//
try
{
ccm.Init(false, new AeadParameters(new KeyParameter(K1), 32, N2, A2));
ccm.ProcessPacket(C2, 0, C2.Length);
Fail("invalid cipher text not picked up");
}
catch (InvalidCipherTextException)
{
// expected
}
try
{
ccm = new CcmBlockCipher(new DesEngine());
Fail("incorrect block size not picked up");
}
catch (ArgumentException)
{
// expected
}
try
{
ccm.Init(false, new KeyParameter(K1));
Fail("illegal argument not picked up");
}
catch (ArgumentException)
{
// expected
}
}
