protected override AsymmetricAlgorithm LoadKey(ReadOnlyMemory <byte> pkcs8)
{
PrivateKeyInfoAsn privateKeyInfo = PrivateKeyInfoAsn.Decode(pkcs8, AsnEncodingRules.BER);
AsymmetricAlgorithm key;
switch (privateKeyInfo.PrivateKeyAlgorithm.Algorithm)
{
case Oids.Rsa:
key = new RSAImplementation.RSASecurityTransforms();
break;
case Oids.Dsa:
key = new DSAImplementation.DSASecurityTransforms();
break;
case Oids.EcDiffieHellman:
case Oids.EcPublicKey:
key = new ECDsaImplementation.ECDsaSecurityTransforms();
break;
default:
throw new CryptographicException(
SR.Cryptography_UnknownAlgorithmIdentifier,
privateKeyInfo.PrivateKeyAlgorithm.Algorithm);
}
key.ImportPkcs8PrivateKey(pkcs8.Span, out int bytesRead);
if (bytesRead != pkcs8.Length)
{
throw new CryptographicException(SR.Cryptography_Der_Invalid_Encoding);
}
return(key);
}
public ICertificatePal CopyWithPrivateKey(DSA privateKey)
{
var typedKey = privateKey as DSAImplementation.DSASecurityTransforms;
if (typedKey != null)
{
return(CopyWithPrivateKey(typedKey.GetKeys()));
}
DSAParameters dsaParameters = privateKey.ExportParameters(true);
using (PinAndClear.Track(dsaParameters.X))
using (typedKey = new DSAImplementation.DSASecurityTransforms())
{
typedKey.ImportParameters(dsaParameters);
return(CopyWithPrivateKey(typedKey.GetKeys()));
}
}
