name issue
1 files changed, 0 insertions, 153 deletions
diff --git a/crypto/src/crypto/signers/EcGost3410_2012Signer.cs b/crypto/src/crypto/signers/EcGost3410_2012Signer.cs
deleted file mode 100644
index e7174ace6..000000000
--- a/crypto/src/crypto/signers/EcGost3410_2012Signer.cs
+++ /dev/null
@@ -1,153 +0,0 @@
-using Org.BouncyCastle.Math;
-using System;
-using System.IO;
-
-using Org.BouncyCastle.Crypto.Parameters;
-using Org.BouncyCastle.Math.EC;
-using Org.BouncyCastle.Math.EC.Multiplier;
-using Org.BouncyCastle.Security;
-using Org.BouncyCastle.Utilities;
-
-namespace Org.BouncyCastle.Crypto.Signers
-{
- public class ECGOST3410_2012Signer : IDsaExt
- {
- private ECKeyParameters key;
- private SecureRandom secureRandom;
- private bool forSigning;
-
- public BigInteger Order
- {
- get { return key.Parameters.N; }
- }
-
- public string AlgorithmName
- {
- get { return key.AlgorithmName; }
- }
-
- public virtual void Init(bool forSigning, ICipherParameters parameters)
- {
- this.forSigning = forSigning;
- if (forSigning)
- {
- if (parameters is ParametersWithRandom)
- {
- ParametersWithRandom rParam = (ParametersWithRandom)parameters;
- this.secureRandom = rParam.Random;
- this.key = (ECPrivateKeyParameters)rParam.Parameters;
- }
- else
- {
- this.secureRandom = new SecureRandom();
- this.key = (ECPrivateKeyParameters)parameters;
- }
- }
- else
- {
- this.key = (ECPublicKeyParameters)parameters;
- }
- }
-
- public BigInteger[] GenerateSignature(byte[] message)
- {
- if (!forSigning)
- {
- throw new InvalidOperationException("not initialized for signing");
- }
-
- byte[] mRev = new byte[message.Length]; // conversion is little-endian
- for (int i = 0; i != mRev.Length; i++)
- {
- mRev[i] = message[mRev.Length - 1 - i];
- }
- BigInteger e = new BigInteger(1, mRev);
-
- ECDomainParameters ec = key.Parameters;
- BigInteger n = ec.N;
- BigInteger d = ((ECPrivateKeyParameters)key).D;
-
- BigInteger r, s;
-
- ECMultiplier basePointMultiplier = CreateBasePointMultiplier();
-
- do // generate s
- {
- BigInteger k;
- do // generate r
- {
- do
- {
- k = BigIntegers.CreateRandomBigInteger(n.BitLength, secureRandom);
- }
- while (k.Equals(BigInteger.Zero)); // ECConstants.ZERO));
-
- ECPoint p = basePointMultiplier.Multiply(ec.G, k).Normalize();
-
- r = p.AffineXCoord.ToBigInteger().Mod(n);
- }
- while (r.Equals(BigInteger.Zero)); // ECConstants.ZERO));
-
- s = (k.Multiply(e)).Add(d.Multiply(r)).Mod(n);
- }
- while (s.Equals(BigInteger.Zero)); // ECConstants.ZERO));
-
- return new BigInteger[] { r, s };
- }
-
-
- public bool VerifySignature(byte[] message, BigInteger r, BigInteger s)
- {
- if (forSigning)
- {
- throw new InvalidOperationException("not initialized for verification");
- }
-
-
- byte[] mRev = new byte[message.Length]; // conversion is little-endian
- for (int i = 0; i != mRev.Length; i++)
- {
- mRev[i] = message[mRev.Length - 1 - i];
- }
- BigInteger e = new BigInteger(1, mRev);
- BigInteger n = key.Parameters.N;
-
- // r in the range [1,n-1]
- if (r.CompareTo(BigInteger.One) < 0 || r.CompareTo(n) >= 0)
- {
- return false;
- }
-
- // s in the range [1,n-1]
- if (s.CompareTo(BigInteger.One) < 0 || s.CompareTo(n) >= 0)
- {
- return false;
- }
-
- BigInteger v = e.ModInverse(n);
-
- BigInteger z1 = s.Multiply(v).Mod(n);
- BigInteger z2 = (n.Subtract(r)).Multiply(v).Mod(n);
-
- ECPoint G = key.Parameters.G; // P
- ECPoint Q = ((ECPublicKeyParameters)key).Q;
-
- ECPoint point = ECAlgorithms.SumOfTwoMultiplies(G, z1, Q, z2).Normalize();
-
- // components must be bogus.
- if (point.IsInfinity)
- {
- return false;
- }
-
- BigInteger R = point.AffineXCoord.ToBigInteger().Mod(n);
-
- return R.Equals(r);
- }
-
- protected virtual ECMultiplier CreateBasePointMultiplier()
- {
- return new FixedPointCombMultiplier();
- }
- }
-}
\ No newline at end of file
|
