private static SafeSecKeyRefHandle ImportKey(ECParameters parameters)
{
int fieldSize = parameters.Q !.X !.Length;
Debug.Assert(parameters.Q.Y != null && parameters.Q.Y.Length == fieldSize);
Debug.Assert(parameters.Q.X != null && parameters.Q.X.Length == fieldSize);
int keySize = 1 + fieldSize * (parameters.D != null ? 3 : 2);
byte[] dataKeyPool = CryptoPool.Rent(keySize);
Span <byte> dataKey = dataKeyPool.AsSpan(0, keySize);
try
{
AsymmetricAlgorithmHelpers.EncodeToUncompressedAnsiX963Key(
parameters.Q.X,
parameters.Q.Y,
parameters.D,
dataKey);
return(Interop.AppleCrypto.CreateDataKey(
dataKey,
Interop.AppleCrypto.PAL_KeyAlgorithm.EC,
isPublic: parameters.D == null));
}
finally
{
CryptoPool.Return(dataKeyPool, keySize);
}
}
