private void ResolveAsymmetricAlgorithm(SecurityKey key, string algorithm, bool willCreateSignatures)
{
if (key == null)
{
throw LogHelper.LogArgumentNullException("key");
}
if (string.IsNullOrWhiteSpace(algorithm))
{
throw LogHelper.LogArgumentNullException("algorithm");
}
_hashAlgorithm = GetHashAlgorithmString(algorithm);
RsaAlgorithm rsaAlgorithm = Utility.ResolveRsaAlgorithm(key, algorithm, willCreateSignatures);
if (rsaAlgorithm != null)
{
if (rsaAlgorithm.rsaCryptoServiceProvider != null)
{
_rsaCryptoServiceProvider = rsaAlgorithm.rsaCryptoServiceProvider;
_disposeRsa = rsaAlgorithm.dispose;
return;
}
else if (rsaAlgorithm.rsaCryptoServiceProviderProxy != null)
{
_rsaCryptoServiceProviderProxy = rsaAlgorithm.rsaCryptoServiceProviderProxy;
_disposeRsa = rsaAlgorithm.dispose;
return;
}
else
{
throw LogHelper.LogExceptionMessage(new ArgumentOutOfRangeException(nameof(key), String.Format(CultureInfo.InvariantCulture, LogMessages.IDX10641, key)));
}
}
ECDsaAlgorithm ecdsaAlgorithm = Utility.ResolveECDsaAlgorithm(key, algorithm, willCreateSignatures);
if (ecdsaAlgorithm != null && ecdsaAlgorithm.ecdsaCng != null)
{
_ecdsa = ecdsaAlgorithm.ecdsaCng;
_ecdsa.HashAlgorithm = new CngAlgorithm(_hashAlgorithm);
_disposeEcdsa = ecdsaAlgorithm.dispose;
return;
}
throw LogHelper.LogExceptionMessage(new ArgumentOutOfRangeException(nameof(key), String.Format(CultureInfo.InvariantCulture, LogMessages.IDX10641, key)));
}
internal static RsaAlgorithm ResolveRsaAlgorithm(SecurityKey key, string algorithm, bool requirePrivateKey)
{
if (key == null)
{
return(null);
}
var rsaAlgorithm = new RsaAlgorithm();
var rsaKey = key as RsaSecurityKey;
if (rsaKey != null)
{
if (rsaKey.Rsa != null)
{
#if NETSTANDARD1_4
rsaAlgorithm.rsa = rsaKey.Rsa;
#else
rsaAlgorithm.rsaCryptoServiceProvider = rsaKey.Rsa as RSACryptoServiceProvider;
#endif
return(rsaAlgorithm);
}
else
{
#if NETSTANDARD1_4
rsaAlgorithm.rsa = RSA.Create();
rsaAlgorithm.rsa.ImportParameters(rsaKey.Parameters);
rsaAlgorithm.dispose = true;
#else
rsaAlgorithm.rsaCryptoServiceProvider = new RSACryptoServiceProvider();
(rsaAlgorithm.rsaCryptoServiceProvider as RSA).ImportParameters(rsaKey.Parameters);
rsaAlgorithm.dispose = true;
#endif
}
return(rsaAlgorithm);
}
X509SecurityKey x509Key = key as X509SecurityKey;
if (x509Key != null)
{
#if NETSTANDARD1_4
if (requirePrivateKey)
{
rsaAlgorithm.rsa = x509Key.PrivateKey as RSA;
}
else
{
rsaAlgorithm.rsa = x509Key.PublicKey as RSA;
}
#else
if (requirePrivateKey)
{
rsaAlgorithm.rsaCryptoServiceProviderProxy = new RSACryptoServiceProviderProxy(x509Key.PrivateKey as RSACryptoServiceProvider);
}
else
{
rsaAlgorithm.rsaCryptoServiceProviderProxy = new RSACryptoServiceProviderProxy(x509Key.PublicKey as RSACryptoServiceProvider);
}
#endif
return(rsaAlgorithm);
}
JsonWebKey webKey = key as JsonWebKey;
if (webKey != null && webKey.Kty == JsonWebAlgorithmsKeyTypes.RSA)
{
#if NETSTANDARD1_4
RSAParameters parameters = webKey.CreateRsaParameters();
rsaAlgorithm.rsa = RSA.Create();
rsaAlgorithm.dispose = true;
if (rsaAlgorithm.rsa != null)
{
rsaAlgorithm.rsa.ImportParameters(parameters);
}
#else
RSAParameters parameters = webKey.CreateRsaParameters();
rsaAlgorithm.rsaCryptoServiceProvider = new RSACryptoServiceProvider();
(rsaAlgorithm.rsaCryptoServiceProvider as RSA).ImportParameters(parameters);
#endif
return(rsaAlgorithm);
}
return(null);
}
