public override bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm)
{
var publicKey = new PublicKey(new Oid(KnownOids.X509Algorithms.RSA), new AsnEncodedData(_key), AsnNull);
var rsa = publicKey.Key as RSACryptoServiceProvider;
if (rsa == null)
{
return(false);
}
return(rsa.VerifyData(data, SctHashAlgorithmToOid(algorithm), signature));
}
private static string SctHashAlgorithmToOid(SctHashAlgorithm algorithm)
{
switch (algorithm)
{
case SctHashAlgorithm.HASH_ALGO_SHA1:
return(KnownOids.HashAlgorithms.sha1);
case SctHashAlgorithm.HASH_ALGO_SHA256:
return(KnownOids.HashAlgorithms.sha256);
case SctHashAlgorithm.HASH_ALGO_SHA384:
return(KnownOids.HashAlgorithms.sha384);
case SctHashAlgorithm.HASH_ALGO_SHA512:
return(KnownOids.HashAlgorithms.sha512);
default:
return(null);
}
}
private static CngAlgorithm SctHashAlgorithmToCng(SctHashAlgorithm algorithm)
{
switch (algorithm)
{
case SctHashAlgorithm.HASH_ALGO_SHA1:
return(CngAlgorithm.Sha1);
case SctHashAlgorithm.HASH_ALGO_SHA256:
return(CngAlgorithm.Sha256);
case SctHashAlgorithm.HASH_ALGO_SHA384:
return(CngAlgorithm.Sha384);
case SctHashAlgorithm.HASH_ALGO_SHA512:
return(CngAlgorithm.Sha512);
default:
return(null);
}
}
public override bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm)
{
byte[] blob;
if (!EcdsaKeyFormatter.ToEcdsa256PublicKeyBlob(_key, out blob))
{
return(false);
}
using (var key = CngKey.Import(blob, CngKeyBlobFormat.EccPublicBlob, CngProvider.MicrosoftSoftwareKeyStorageProvider))
{
using (var ecdsa = new ECDsaCng(key))
{
var hashAlgorithm = SctHashAlgorithmToCng(algorithm);
if (hashAlgorithm == null)
{
return(false);
}
ecdsa.HashAlgorithm = hashAlgorithm;
return(ecdsa.VerifyData(data, signature));
}
}
}
private static string SctHashAlgorithmToOid(SctHashAlgorithm algorithm)
{
switch (algorithm)
{
case SctHashAlgorithm.HASH_ALGO_SHA1:
return KnownOids.HashAlgorithms.sha1;
case SctHashAlgorithm.HASH_ALGO_SHA256:
return KnownOids.HashAlgorithms.sha256;
case SctHashAlgorithm.HASH_ALGO_SHA384:
return KnownOids.HashAlgorithms.sha384;
case SctHashAlgorithm.HASH_ALGO_SHA512:
return KnownOids.HashAlgorithms.sha512;
default:
return null;
}
}
private static CngAlgorithm SctHashAlgorithmToCng(SctHashAlgorithm algorithm)
{
switch (algorithm)
{
case SctHashAlgorithm.HASH_ALGO_SHA1:
return CngAlgorithm.Sha1;
case SctHashAlgorithm.HASH_ALGO_SHA256:
return CngAlgorithm.Sha256;
case SctHashAlgorithm.HASH_ALGO_SHA384:
return CngAlgorithm.Sha384;
case SctHashAlgorithm.HASH_ALGO_SHA512:
return CngAlgorithm.Sha512;
default:
return null;
}
}
public override bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm)
{
var publicKey = new PublicKey(new Oid(KnownOids.X509Algorithms.RSA), new AsnEncodedData(_key), AsnNull);
var rsa = publicKey.Key as RSACryptoServiceProvider;
if (rsa == null)
{
return false;
}
return rsa.VerifyData(data, SctHashAlgorithmToOid(algorithm), signature);
}
public override bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm)
{
byte[] blob;
if(!EcdsaKeyFormatter.ToEcdsa256PublicKeyBlob(_key, out blob))
{
return false;
}
using (var key = CngKey.Import(blob, CngKeyBlobFormat.EccPublicBlob, CngProvider.MicrosoftSoftwareKeyStorageProvider))
{
using (var ecdsa = new ECDsaCng(key))
{
var hashAlgorithm = SctHashAlgorithmToCng(algorithm);
if (hashAlgorithm == null)
{
return false;
}
ecdsa.HashAlgorithm = hashAlgorithm;
return ecdsa.VerifyData(data, signature);
}
}
}
public abstract bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm);
public abstract bool Verify(byte[] data, byte[] signature, SctHashAlgorithm algorithm);