private static SafeSecKeyRefHandle ImportKey(DSAParameters parameters)
{
if (parameters.X != null)
{
// DSAPrivateKey ::= SEQUENCE(
// version INTEGER,
// p INTEGER,
// q INTEGER,
// g INTEGER,
// y INTEGER,
// x INTEGER,
// )
using (AsnWriter privateKeyWriter = new AsnWriter(AsnEncodingRules.DER))
{
privateKeyWriter.PushSequence();
privateKeyWriter.WriteInteger(0);
privateKeyWriter.WriteKeyParameterInteger(parameters.P);
privateKeyWriter.WriteKeyParameterInteger(parameters.Q);
privateKeyWriter.WriteKeyParameterInteger(parameters.G);
privateKeyWriter.WriteKeyParameterInteger(parameters.Y);
privateKeyWriter.WriteKeyParameterInteger(parameters.X);
privateKeyWriter.PopSequence();
return(Interop.AppleCrypto.ImportEphemeralKey(privateKeyWriter.EncodeAsSpan(), true));
}
}
else
{
using (AsnWriter writer = DSAKeyFormatHelper.WriteSubjectPublicKeyInfo(parameters))
{
return(Interop.AppleCrypto.ImportEphemeralKey(writer.EncodeAsSpan(), false));
}
}
}
private static SafeSecKeyRefHandle ImportKey(DSAParameters parameters)
{
AsnWriter keyWriter;
bool hasPrivateKey;
if (parameters.X != null)
{
// DSAPrivateKey ::= SEQUENCE(
// version INTEGER,
// p INTEGER,
// q INTEGER,
// g INTEGER,
// y INTEGER,
// x INTEGER,
// )
keyWriter = new AsnWriter(AsnEncodingRules.DER);
using (keyWriter.PushSequence())
{
keyWriter.WriteInteger(0);
keyWriter.WriteKeyParameterInteger(parameters.P);
keyWriter.WriteKeyParameterInteger(parameters.Q);
keyWriter.WriteKeyParameterInteger(parameters.G);
keyWriter.WriteKeyParameterInteger(parameters.Y);
keyWriter.WriteKeyParameterInteger(parameters.X);
}
hasPrivateKey = true;
}
else
{
keyWriter = DSAKeyFormatHelper.WriteSubjectPublicKeyInfo(parameters);
hasPrivateKey = false;
}
byte[] rented = CryptoPool.Rent(keyWriter.GetEncodedLength());
if (!keyWriter.TryEncode(rented, out int written))
{
Debug.Fail("TryEncode failed with a pre-allocated buffer");
throw new InvalidOperationException();
}
// Explicitly clear the inner buffer
keyWriter.Reset();
try
{
return(Interop.AppleCrypto.ImportEphemeralKey(rented.AsSpan(0, written), hasPrivateKey));
}
finally
{
CryptoPool.Return(rented, written);
}
}
private static SafeSecKeyRefHandle ImportKey(DSAParameters parameters)
{
bool hasPrivateKey = parameters.X != null;
byte[] blob;
if (hasPrivateKey)
{
Debug.Assert(parameters.X != null);
// DSAPrivateKey ::= SEQUENCE(
// version INTEGER,
// p INTEGER,
// q INTEGER,
// g INTEGER,
// y INTEGER,
// x INTEGER,
// )
using (AsnWriter privateKeyWriter = new AsnWriter(AsnEncodingRules.DER))
{
privateKeyWriter.PushSequence();
privateKeyWriter.WriteInteger(0);
privateKeyWriter.WriteKeyParameterInteger(parameters.P);
privateKeyWriter.WriteKeyParameterInteger(parameters.Q);
privateKeyWriter.WriteKeyParameterInteger(parameters.G);
privateKeyWriter.WriteKeyParameterInteger(parameters.Y);
privateKeyWriter.WriteKeyParameterInteger(parameters.X);
privateKeyWriter.PopSequence();
blob = privateKeyWriter.Encode();
}
}
else
{
using (AsnWriter writer = DSAKeyFormatHelper.WriteSubjectPublicKeyInfo(parameters))
{
blob = writer.Encode();
}
}
return(Interop.AppleCrypto.ImportEphemeralKey(blob, hasPrivateKey));
}
private AsnWriter WriteSubjectPublicKeyInfo()
{
DSAParameters dsaParameters = ExportParameters(false);
return(DSAKeyFormatHelper.WriteSubjectPublicKeyInfo(dsaParameters));
}