internal AppleHmacProvider(Interop.AppleCrypto.PAL_HashAlgorithm algorithm, byte[] key)
{
_key = key.CloneByteArray();
int hashSizeInBytes = 0;
_ctx = Interop.AppleCrypto.HmacCreate(algorithm, ref hashSizeInBytes);
if (hashSizeInBytes < 0)
{
_ctx.Dispose();
throw new PlatformNotSupportedException(
SR.Format(
SR.Cryptography_UnknownHashAlgorithm,
Enum.GetName(typeof(Interop.AppleCrypto.PAL_HashAlgorithm), algorithm)));
}
if (_ctx.IsInvalid)
{
_ctx.Dispose();
throw new CryptographicException();
}
HashSizeInBytes = hashSizeInBytes;
}
internal static extern unsafe int HmacFinal(SafeHmacHandle ctx, byte* pbOutput, int cbOutput);
internal static extern unsafe int HmacUpdate(SafeHmacHandle ctx, byte* pbData, int cbData);
internal static extern unsafe int HmacInit(SafeHmacHandle ctx, byte* pbKey, int cbKey);