private void CopyIn(Sha224Digest t)
{
CopyIn((GeneralDigest)t);
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
private void CopyIn(Sha224Digest t)
{
base.CopyIn(t);
this.H1 = t.H1;
this.H2 = t.H2;
this.H3 = t.H3;
this.H4 = t.H4;
this.H5 = t.H5;
this.H6 = t.H6;
this.H7 = t.H7;
this.H8 = t.H8;
Array.Copy(t.X, 0, this.X, 0, t.X.Length);
this.xOff = t.xOff;
}
private void CopyIn(Sha224Digest t)
{
CopyIn((GeneralDigest)t);
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
global::System.Array.Copy((global::System.Array)t.X, 0, (global::System.Array)X, 0, t.X.Length);
xOff = t.xOff;
}
/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public Sha224Digest(
Sha224Digest t)
: base(t)
{
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
Array.Copy(t.X, 0, X, 0, t.X.Length);
xOff = t.xOff;
}
private void CopyIn(Sha224Digest t)
{
base.CopyIn(t);
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
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 Sha224Digest(
Sha224Digest t)
: base(t)
{
H1 = t.H1;
H2 = t.H2;
H3 = t.H3;
H4 = t.H4;
H5 = t.H5;
H6 = t.H6;
H7 = t.H7;
H8 = t.H8;
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 Sha224Digest(
Sha224Digest t)
: base(t)
{
CopyIn(t);
}
/**
* Copy constructor. This will copy the state of the provided
* message digest.
*/
public Sha224Digest(
Sha224Digest t)
: base(t)
{
CopyIn(t);
}
public override void Reset(IMemoable other)
{
Sha224Digest d = (Sha224Digest)other;
CopyIn(d);
}
public override void Reset(IMemoable other)
{
Sha224Digest t = (Sha224Digest)other;
this.CopyIn(t);
}
internal override void ProcessBlock()
{
for (int i = 16; i <= 63; i++)
{
this.X[i] = Sha224Digest.Theta1(this.X[i - 2]) + this.X[i - 7] + Sha224Digest.Theta0(this.X[i - 15]) + this.X[i - 16];
}
uint num = this.H1;
uint num2 = this.H2;
uint num3 = this.H3;
uint num4 = this.H4;
uint num5 = this.H5;
uint num6 = this.H6;
uint num7 = this.H7;
uint num8 = this.H8;
int num9 = 0;
for (int j = 0; j < 8; j++)
{
num8 += Sha224Digest.Sum1(num5) + Sha224Digest.Ch(num5, num6, num7) + Sha224Digest.K[num9] + this.X[num9];
num4 += num8;
num8 += Sha224Digest.Sum0(num) + Sha224Digest.Maj(num, num2, num3);
num9++;
num7 += Sha224Digest.Sum1(num4) + Sha224Digest.Ch(num4, num5, num6) + Sha224Digest.K[num9] + this.X[num9];
num3 += num7;
num7 += Sha224Digest.Sum0(num8) + Sha224Digest.Maj(num8, num, num2);
num9++;
num6 += Sha224Digest.Sum1(num3) + Sha224Digest.Ch(num3, num4, num5) + Sha224Digest.K[num9] + this.X[num9];
num2 += num6;
num6 += Sha224Digest.Sum0(num7) + Sha224Digest.Maj(num7, num8, num);
num9++;
num5 += Sha224Digest.Sum1(num2) + Sha224Digest.Ch(num2, num3, num4) + Sha224Digest.K[num9] + this.X[num9];
num += num5;
num5 += Sha224Digest.Sum0(num6) + Sha224Digest.Maj(num6, num7, num8);
num9++;
num4 += Sha224Digest.Sum1(num) + Sha224Digest.Ch(num, num2, num3) + Sha224Digest.K[num9] + this.X[num9];
num8 += num4;
num4 += Sha224Digest.Sum0(num5) + Sha224Digest.Maj(num5, num6, num7);
num9++;
num3 += Sha224Digest.Sum1(num8) + Sha224Digest.Ch(num8, num, num2) + Sha224Digest.K[num9] + this.X[num9];
num7 += num3;
num3 += Sha224Digest.Sum0(num4) + Sha224Digest.Maj(num4, num5, num6);
num9++;
num2 += Sha224Digest.Sum1(num7) + Sha224Digest.Ch(num7, num8, num) + Sha224Digest.K[num9] + this.X[num9];
num6 += num2;
num2 += Sha224Digest.Sum0(num3) + Sha224Digest.Maj(num3, num4, num5);
num9++;
num += Sha224Digest.Sum1(num6) + Sha224Digest.Ch(num6, num7, num8) + Sha224Digest.K[num9] + this.X[num9];
num5 += num;
num += Sha224Digest.Sum0(num2) + Sha224Digest.Maj(num2, num3, num4);
num9++;
}
this.H1 += num;
this.H2 += num2;
this.H3 += num3;
this.H4 += num4;
this.H5 += num5;
this.H6 += num6;
this.H7 += num7;
this.H8 += num8;
this.xOff = 0;
Array.Clear(this.X, 0, 16);
}
public ITestResult Perform()
{
IDigest digest = new Sha224Digest();
byte[] resBuf = new byte[digest.GetDigestSize()];
string resStr;
//
// test 1
//
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec1.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 1"
+ SimpleTest.NewLine
+ " expected: " + resVec1
+ SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 2
//
byte[] bytes = Hex.Decode(testVec2);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec2.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 2"
+ SimpleTest.NewLine
+ " expected: " + resVec2
+ SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 3
//
bytes = Hex.Decode(testVec3);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec3.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 3"
+ SimpleTest.NewLine
+ " expected: " + resVec3
+ SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 4
//
bytes = Hex.Decode(testVec4);
digest.BlockUpdate(bytes, 0, bytes.Length);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 4"
+ SimpleTest.NewLine
+ " expected: " + resVec4
+ SimpleTest.NewLine
+ " got : " + resStr);
}
//
// test 5
//
bytes = Hex.Decode(testVec4);
digest.BlockUpdate(bytes, 0, bytes.Length/2);
// clone the IDigest
IDigest d = new Sha224Digest((Sha224Digest)digest);
digest.BlockUpdate(bytes, bytes.Length/2, bytes.Length - bytes.Length/2);
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 5"
+ SimpleTest.NewLine
+ " expected: " + resVec4
+ SimpleTest.NewLine
+ " got : " + resStr);
}
d.BlockUpdate(bytes, bytes.Length/2, bytes.Length - bytes.Length/2);
d.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec4.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 5"
+ SimpleTest.NewLine
+ " expected: " + resVec4
+ SimpleTest.NewLine
+ " got : " + resStr);
}
// test 6
bytes = Hex.Decode(testVec5);
for ( int i = 0; i < 100000; i++ )
{
digest.BlockUpdate(bytes, 0, bytes.Length);
}
digest.DoFinal(resBuf, 0);
resStr = Hex.ToHexString(resBuf);
if (!resVec5.Equals(resStr))
{
return new SimpleTestResult(false,
"SHA-224 failing standard vector test 6"
+ SimpleTest.NewLine
+ " expected: " + resVec5
+ SimpleTest.NewLine
+ " got : " + resStr);
}
return new SimpleTestResult(true, Name + ": Okay");
}
private IDigest GetDigest(THashAlgorithm hashAlgorithm)
{
IDigest result = null;
switch (hashAlgorithm)
{
case THashAlgorithm.None:
result = new NullDigest();
break;
case THashAlgorithm.MD5:
result = new MD5Digest();
break;
case THashAlgorithm.SHA1:
result = new Sha1Digest();
break;
case THashAlgorithm.SHA224:
result = new Sha224Digest();
break;
case THashAlgorithm.SHA256:
result = new Sha256Digest();
break;
case THashAlgorithm.SHA384:
result = new Sha384Digest();
break;
case THashAlgorithm.SHA512:
result = new Sha512Digest();
break;
default:
break;
}
return result;
}
public Sha224Digest(Sha224Digest t) : base(t)
{
this.X = new uint[0x40];
this.CopyIn(t);
}