internal ECParameters ExportParameters(bool includePrivateParameters, int keySizeInBIts)
{
SecKeyPair keys = GetOrGenerateKeys(keySizeInBIts);
SafeSecKeyRefHandle keyHandle = includePrivateParameters ? keys.PrivateKey : keys.PublicKey;
if (keyHandle == null)
{
throw new CryptographicException(SR.Cryptography_OpenInvalidHandle);
}
DerSequenceReader keyReader = Interop.AppleCrypto.SecKeyExport(keyHandle, includePrivateParameters);
ECParameters parameters = new ECParameters();
if (includePrivateParameters)
{
keyReader.ReadPkcs8Blob(ref parameters);
}
else
{
keyReader.ReadSubjectPublicKeyInfo(ref parameters);
}
int size = AsymmetricAlgorithmHelpers.BitsToBytes(keySizeInBIts);
KeyBlobHelpers.PadOrTrim(ref parameters.Q.X, size);
KeyBlobHelpers.PadOrTrim(ref parameters.Q.Y, size);
if (includePrivateParameters)
{
KeyBlobHelpers.PadOrTrim(ref parameters.D, size);
}
return(parameters);
}
public override RSAParameters ExportParameters(bool includePrivateParameters)
{
SecKeyPair keys = GetKeys();
SafeSecKeyRefHandle keyHandle = includePrivateParameters ? keys.PrivateKey : keys.PublicKey;
if (keyHandle == null)
{
throw new CryptographicException(SR.Cryptography_OpenInvalidHandle);
}
DerSequenceReader keyReader = Interop.AppleCrypto.SecKeyExport(keyHandle, includePrivateParameters);
RSAParameters parameters = new RSAParameters();
if (includePrivateParameters)
{
keyReader.ReadPkcs8Blob(ref parameters);
}
else
{
// When exporting a key handle opened from a certificate, it seems to
// export as a PKCS#1 blob instead of an X509 SubjectPublicKeyInfo blob.
// So, check for that.
if (keyReader.PeekTag() == (byte)DerSequenceReader.DerTag.Integer)
{
keyReader.ReadPkcs1PublicBlob(ref parameters);
}
else
{
keyReader.ReadSubjectPublicKeyInfo(ref parameters);
}
}
return(parameters);
}
public override DSAParameters ExportParameters(bool includePrivateParameters)
{
SecKeyPair keys = GetKeys();
if (keys.PublicKey == null ||
(includePrivateParameters && keys.PrivateKey == null))
{
throw new CryptographicException(SR.Cryptography_OpenInvalidHandle);
}
DSAParameters parameters = new DSAParameters();
DerSequenceReader publicKeyReader =
Interop.AppleCrypto.SecKeyExport(keys.PublicKey, exportPrivate: false);
publicKeyReader.ReadSubjectPublicKeyInfo(ref parameters);
if (includePrivateParameters)
{
DerSequenceReader privateKeyReader =
Interop.AppleCrypto.SecKeyExport(keys.PrivateKey, exportPrivate: true);
privateKeyReader.ReadPkcs8Blob(ref parameters);
}
KeyBlobHelpers.TrimPaddingByte(ref parameters.P);
KeyBlobHelpers.TrimPaddingByte(ref parameters.Q);
KeyBlobHelpers.PadOrTrim(ref parameters.G, parameters.P.Length);
KeyBlobHelpers.PadOrTrim(ref parameters.Y, parameters.P.Length);
if (includePrivateParameters)
{
KeyBlobHelpers.PadOrTrim(ref parameters.X, parameters.Q.Length);
}
return(parameters);
}
