public byte[] CalculateRawSignature(AsymmetricKeyParameter privateKey, byte[] md5andsha1)
{
// Note: Only use the SHA1 part of the hash
ISigner sig = new DsaDigestSigner(new DsaSigner(), new NullDigest());
sig.Init(true, privateKey);
sig.BlockUpdate(md5andsha1, 16, 20);
return sig.GenerateSignature();
}
public void ThrowIfSignatureNotOkay(byte[] signature, params byte[][] inputs)
{
var signer = new DsaDigestSigner(new ECDsaSigner(), new Sha256Digest());
signer.Init(false, _publicKey);
foreach (var input in inputs)
{
signer.BlockUpdate(input, 0, input.Length);
}
if (!signer.VerifySignature(signature))
{
throw new ApplicationException();
}
}
protected virtual ISigner MakeSigner(SignatureAndHashAlgorithm algorithm, bool raw, bool forSigning,
ICipherParameters cp)
{
if ((algorithm != null) != TlsUtilities.IsTlsV12(mContext))
throw new InvalidOperationException();
if (algorithm != null && algorithm.Signature != SignatureAlgorithm)
throw new InvalidOperationException();
byte hashAlgorithm = algorithm == null ? HashAlgorithm.sha1 : algorithm.Hash;
IDigest d = raw ? new NullDigest() : TlsUtilities.CreateHash(hashAlgorithm);
ISigner s = new DsaDigestSigner(CreateDsaImpl(hashAlgorithm), d);
s.Init(forSigning, MakeInitParameters(forSigning, cp));
return s;
}
protected virtual ISigner MakeSigner(IDigest d, bool forSigning, ICipherParameters cp)
{
ISigner s = new DsaDigestSigner(CreateDsaImpl(), d);
s.Init(forSigning, cp);
return s;
}
private ISigner GetSigner(TSignatureAlgorithm signatureAlgorithm, THashAlgorithm hashAlgorithm, AsymmetricKeyParameter serverPrivateKey)
{
ISigner result = null;
switch (signatureAlgorithm)
{
case TSignatureAlgorithm.Anonymous:
break;
case TSignatureAlgorithm.RSA:
break;
case TSignatureAlgorithm.DSA:
break;
case TSignatureAlgorithm.ECDSA:
result = new DsaDigestSigner(new ECDsaSigner(), GetDigest(hashAlgorithm));
break;
default:
break;
}
result.Init(true, serverPrivateKey);
//result.Init(true, new ParametersWithRandom(serverPrivateKey, this.mContext.SecureRandom));
return result;
}
public ISigner CreateVerifyer(AsymmetricKeyParameter publicKey)
{
ISigner s = new DsaDigestSigner(new DsaSigner(), new Sha1Digest());
s.Init(false, publicKey);
return s;
}
