public string GetSign(byte[] msg)
{
//Org.BouncyCastle.Math.BigInteger d = new Org.BouncyCastle.Math.BigInteger(Convert.FromBase64String(privKey));
byte[] prvB = StringToByteArray(prv);
byte[] pubB = StringToByteArray(pub);
//byte[] prvB = StringToByteArray(prvTmp);
//byte[] pubB = StringToByteArray(pubTmp);
Org.BouncyCastle.Math.BigInteger sk = new Org.BouncyCastle.Math.BigInteger(+1, prvB);
Org.BouncyCastle.Math.EC.ECPoint q = domain.G.Multiply(sk);
byte[] pubKeyX = q.Normalize().AffineXCoord.GetEncoded();
byte[] pubKeyY = q.Normalize().AffineYCoord.GetEncoded();
BigInteger k = GenerateRandom();
//BigInteger k = new BigInteger(+1,StringToByteArray("015B931D9C7BF3A7A70E57868BF29712377E74355FC59032CD7547C80E179010"));
//Debug.Log("kv:" + BitConverter.ToString(kv.ToByteArray()).Replace("-", ""));
Debug.Log("K:" + BitConverter.ToString(k.ToByteArray()).Replace("-", ""));
ECPoint Q = domain.G.Multiply(k);
Org.BouncyCastle.Crypto.Digests.Sha256Digest digester = new Org.BouncyCastle.Crypto.Digests.Sha256Digest();
byte[] h = new byte[digester.GetDigestSize()];
digester.BlockUpdate(Q.GetEncoded(true), 0, Q.GetEncoded(true).Length);
digester.BlockUpdate(pubB, 0, pubB.Length);
digester.BlockUpdate(msg, 0, msg.Length);
digester.DoFinal(h, 0);
Org.BouncyCastle.Math.BigInteger r = new Org.BouncyCastle.Math.BigInteger(+1, h);
BigInteger s = r.Multiply(sk);
s = k.Subtract(s);
s = s.Mod(domain.n);
string rt = BitConverter.ToString(r.ToByteArray()).Replace("-", "");
if (rt.Length > 32)
{
rt = rt.Remove(0, 2);
}
string st = BitConverter.ToString(s.ToByteArray()).Replace("-", "");
return(rt + st);
}
public ECPublicKeyParameters(
ECPoint q,
DerObjectIdentifier publicKeyParamSet)
: base("ECGOST3410", false, publicKeyParamSet)
{
if (q == null)
throw new ArgumentNullException("q");
this.q = q.Normalize();
}
public ECPublicKeyParameters(
string algorithm,
ECPoint q,
DerObjectIdentifier publicKeyParamSet)
: base(algorithm, false, publicKeyParamSet)
{
if (q == null)
throw new ArgumentNullException("q");
this.q = q.Normalize();
}
public ECPublicKeyParameters(
string algorithm,
ECPoint q,
ECDomainParameters parameters)
: base(algorithm, false, parameters)
{
if (q == null)
throw new ArgumentNullException("q");
this.q = q.Normalize();
}
public virtual bool Equals(ECPoint other)
{
if (this == other)
{
return(true);
}
if (other == null)
{
return(false);
}
ECCurve curve = Curve;
ECCurve curve2 = other.Curve;
bool flag = null == curve;
bool flag2 = null == curve2;
bool isInfinity = IsInfinity;
bool isInfinity2 = other.IsInfinity;
if (isInfinity || isInfinity2)
{
return(isInfinity && isInfinity2 && (flag || flag2 || curve.Equals(curve2)));
}
ECPoint eCPoint = this;
ECPoint eCPoint2 = other;
if (!flag || !flag2)
{
if (flag)
{
eCPoint2 = eCPoint2.Normalize();
}
else if (flag2)
{
eCPoint = eCPoint.Normalize();
}
else
{
if (!curve.Equals(curve2))
{
return(false);
}
ECPoint[] array = new ECPoint[2]
{
this,
curve.ImportPoint(eCPoint2)
};
curve.NormalizeAll(array);
eCPoint = array[0];
eCPoint2 = array[1];
}
}
return(eCPoint.XCoord.Equals(eCPoint2.XCoord) && eCPoint.YCoord.Equals(eCPoint2.YCoord));
}
public virtual ECPoint ImportPoint(ECPoint p)
{
if (this == p.Curve)
{
return(p);
}
if (p.IsInfinity)
{
return(this.Infinity);
}
p = p.Normalize();
return(this.ValidatePoint(p.XCoord.ToBigInteger(), p.YCoord.ToBigInteger(), p.IsCompressed));
}
public virtual bool Equals(ECPoint other)
{
if (this == other)
{
return(true);
}
if (other == null)
{
return(false);
}
ECCurve curve = this.Curve;
ECCurve curve2 = other.Curve;
bool flag = null == curve;
bool flag2 = null == curve2;
bool isInfinity = this.IsInfinity;
bool flag4 = other.IsInfinity;
if (isInfinity || flag4)
{
return((isInfinity && flag4) && ((flag || flag2) || curve.Equals(curve2)));
}
ECPoint point = this;
ECPoint p = other;
if (!flag || !flag2)
{
if (flag)
{
p = p.Normalize();
}
else if (flag2)
{
point = point.Normalize();
}
else
{
if (!curve.Equals(curve2))
{
return(false);
}
ECPoint[] points = new ECPoint[] { this, curve.ImportPoint(p) };
curve.NormalizeAll(points);
point = points[0];
p = points[1];
}
}
return(point.XCoord.Equals(p.XCoord) && point.YCoord.Equals(p.YCoord));
}
public virtual ECPoint ImportPoint(ECPoint p)
{
if (this == p.Curve)
{
return(p);
}
if (p.IsInfinity)
{
return(Infinity);
}
// TODO Default behaviour could be improved if the two curves have the same coordinate system by copying any Z coordinates.
p = p.Normalize();
return(ValidatePoint(p.XCoord.ToBigInteger(), p.YCoord.ToBigInteger(), p.IsCompressed));
}
public ECDomainParameters(
ECCurve curve,
ECPoint g,
BigInteger n,
BigInteger h,
byte[] seed)
{
if (curve == null)
throw new ArgumentNullException("curve");
if (g == null)
throw new ArgumentNullException("g");
if (n == null)
throw new ArgumentNullException("n");
if (h == null)
throw new ArgumentNullException("h");
this.curve = curve;
this.g = g.Normalize();
this.n = n;
this.h = h;
this.seed = Arrays.Clone(seed);
}
public X9ECPoint(ECPoint p, bool compressed)
{
this.p = p.Normalize();
this.encoding = new DerOctetString(p.GetEncoded(compressed));
}
public virtual ECPoint ImportPoint(ECPoint p)
{
if (this == p.Curve)
{
return p;
}
if (p.IsInfinity)
{
return Infinity;
}
// TODO Default behaviour could be improved if the two curves have the same coordinate system by copying any Z coordinates.
p = p.Normalize();
return ValidatePoint(p.XCoord.ToBigInteger(), p.YCoord.ToBigInteger(), p.IsCompressed);
}
public X9ECParameters(
ECCurve curve,
ECPoint g,
BigInteger n,
BigInteger h,
byte[] seed)
{
this.curve = curve;
this.g = g.Normalize();
this.n = n;
this.h = h;
this.seed = seed;
if (ECAlgorithms.IsFpCurve(curve))
{
this.fieldID = new X9FieldID(curve.Field.Characteristic);
}
else if (ECAlgorithms.IsF2mCurve(curve))
{
IPolynomialExtensionField field = (IPolynomialExtensionField)curve.Field;
int[] exponents = field.MinimalPolynomial.GetExponentsPresent();
if (exponents.Length == 3)
{
this.fieldID = new X9FieldID(exponents[2], exponents[1]);
}
else if (exponents.Length == 5)
{
this.fieldID = new X9FieldID(exponents[4], exponents[1], exponents[2], exponents[3]);
}
else
{
throw new ArgumentException("Only trinomial and pentomial curves are supported");
}
}
else
{
throw new ArgumentException("'curve' is of an unsupported type");
}
}
public X9ECPoint(
ECPoint p)
{
this.p = p.Normalize();
}
