/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public RipeMD128Digest(RipeMD128Digest t) : base(t)
{
H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public RipeMD128Digest(RipeMD128Digest t) : base(t)
{
H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
private void CopyIn(RipeMD128Digest t)
{
base.CopyIn(t);
this.H0 = t.H0;
this.H1 = t.H1;
this.H2 = t.H2;
this.H3 = t.H3;
Array.Copy(t.X, 0, this.X, 0, t.X.Length);
this.xOff = t.xOff;
}
private void CopyIn(RipeMD128Digest t)
{
CopyIn((GeneralDigest)t);
H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
private void CopyIn(RipeMD128Digest t)
{
CopyIn((GeneralDigest)t);
H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
global::System.Array.Copy((global::System.Array)t.X, 0, (global::System.Array)X, 0, t.X.Length);
xOff = t.xOff;
}
private void CopyIn(RipeMD128Digest t)
{
base.CopyIn(t);
H0 = t.H0;
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
public override void Reset(IMemoable other)
{
RipeMD128Digest d = (RipeMD128Digest)other;
CopyIn(d);
}
/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public RipeMD128Digest(RipeMD128Digest t) : base(t)
{
CopyIn(t);
}
public ITestResult Perform()
{
IDigest digest = new RipeMD128Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
for (int i = 0; i < messages.Length; i++)
{
byte[] m = Encoding.ASCII.GetBytes(messages[i]);
digest.BlockUpdate(m, 0, m.Length);
digest.DoFinal(resBuf, 0);
if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[i])))
{
return new SimpleTestResult(false, Name + ": Vector " + i + " failed");
}
}
//
// test 2
//
byte[] mm = Encoding.ASCII.GetBytes(messages[messages.Length-1]);
digest.BlockUpdate(mm, 0, mm.Length/2);
// clone the IDigest
IDigest d = new RipeMD128Digest((RipeMD128Digest)digest);
digest.BlockUpdate(mm, mm.Length/2, mm.Length - mm.Length/2);
digest.DoFinal(resBuf, 0);
if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[digests.Length-1])))
{
return new SimpleTestResult(false,
"RipeMD128 failing clone test"
+ SimpleTest.NewLine
+ " expected: " + digests[digests.Length-1]
+ SimpleTest.NewLine
+ " got : " + Hex.ToHexString(resBuf));
}
d.BlockUpdate(mm, mm.Length/2, mm.Length - mm.Length/2);
d.DoFinal(resBuf, 0);
if (!Arrays.AreEqual(resBuf, Hex.Decode(digests[digests.Length-1])))
{
return new SimpleTestResult(false,
"RipeMD128 failing clone test - part 2"
+ SimpleTest.NewLine
+ " expected: " + digests[digests.Length-1]
+ SimpleTest.NewLine
+ " got : " + Hex.ToHexString(resBuf));
}
for (int i = 0; i < 1000000; i++)
{
digest.Update((byte)'a');
}
digest.DoFinal(resBuf, 0);
if (!Arrays.AreEqual(resBuf, Hex.Decode(MillionADigest)))
{
return new SimpleTestResult(false, Name + ": Million a's failed");
}
return new SimpleTestResult(true, Name + ": Okay");
}
/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public RipeMD128Digest(RipeMD128Digest t) : base(t)
{
CopyIn(t);
}
public override void Reset(IMemoable other)
{
RipeMD128Digest t = (RipeMD128Digest)other;
this.CopyIn(t);
}
public RipeMD128Digest(RipeMD128Digest t) : base(t)
{
this.X = new int[0x10];
this.CopyIn(t);
}
/// <summary>
/// Note: Clears pool contents before returning
/// </summary>
private void CreateNewPRNG(byte[] pool)
{
if (pool == null)
{
throw new CryptographicException("Refusing to reseed with null pool");
}
try
{
if (pool.Length != PoolSize)
{
throw new CryptographicException("Refusing to reseed with invalid pool");
}
// Now, pool has been seeded, file operations are all completed, it's time to create my internal PRNG
IDigest digest;
switch (this.myRNGAlgorithm)
{
case PrngAlgorithm.MD5_128bit:
digest = new MD5Digest();
break;
case PrngAlgorithm.RIPEMD128_128bit:
digest = new RipeMD128Digest();
break;
case PrngAlgorithm.RIPEMD160_160bit:
digest = new RipeMD160Digest();
break;
case PrngAlgorithm.RIPEMD256_256bit:
digest = new RipeMD256Digest();
break;
case PrngAlgorithm.RIPEMD320_320bit:
digest = new RipeMD320Digest();
break;
case PrngAlgorithm.SHA1_160bit:
digest = new Sha1Digest();
break;
case PrngAlgorithm.SHA256_256bit:
digest = new Sha256Digest();
break;
case PrngAlgorithm.SHA512_512bit:
digest = new Sha512Digest();
break;
case PrngAlgorithm.Tiger_192bit:
digest = new TigerDigest();
break;
case PrngAlgorithm.Whirlpool_512bit:
digest = new WhirlpoolDigest();
break;
default:
throw new CryptographicException("Unknown prngAlgorithm specified: " + this.myRNGAlgorithm.ToString());
}
var drng = new DigestRandomGenerator(digest);
drng.AddSeedMaterial(pool);
this.myRNG = drng;
}
finally
{
Array.Clear(pool, 0, pool.Length);
}
}