// 'pbExpectedDigest' must point to a '_hmacAlgorithmDigestLengthInBytes'-length buffer
private bool ValidateHash(BCryptHashHandle hashHandle, byte *pbInput, uint cbInput, byte *pbExpectedDigest)
{
byte *pbActualDigest = stackalloc byte[checked ((int)_hmacAlgorithmDigestLengthInBytes)];
hashHandle.HashData(pbInput, cbInput, pbActualDigest, _hmacAlgorithmDigestLengthInBytes);
return(CryptoUtil.TimeConstantBuffersAreEqual(pbExpectedDigest, pbActualDigest, _hmacAlgorithmDigestLengthInBytes));
}
internal static extern int BCryptDuplicateHash(
#endif
BCryptHashHandle hHash,
out BCryptHashHandle phNewHash,
IntPtr pbHashObject,
uint cbHashObject,
uint dwFlags);
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa375383(v=vs.85).aspx
internal static extern int BCryptCreateHash(
[In] BCryptAlgorithmHandle hAlgorithm,
[Out] out BCryptHashHandle phHash,
[In] IntPtr pbHashObject,
[In] uint cbHashObject,
[In] byte *pbSecret,
[In] uint cbSecret,
[In] uint dwFlags);
internal static extern int BCryptCreateHash(
#endif
BCryptAlgorithmHandle hAlgorithm,
out BCryptHashHandle phHash,
IntPtr pbHashObject,
uint cbHashObject,
byte *pbSecret,
uint cbSecret,
uint dwFlags);
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa375468(v=vs.85).aspx
internal static extern int BCryptHashData(
[In] BCryptHashHandle hHash,
[In] byte *pbInput,
[In] uint cbInput,
[In] uint dwFlags);
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa375443(v=vs.85).aspx
internal static extern int BCryptFinishHash(
[In] BCryptHashHandle hHash,
[In] byte *pbOutput,
[In] uint cbOutput,
[In] uint dwFlags);
// http://msdn.microsoft.com/en-us/library/windows/desktop/aa375413(v=vs.85).aspx
internal static extern int BCryptDuplicateHash(
[In] BCryptHashHandle hHash,
[Out] out BCryptHashHandle phNewHash,
[In] IntPtr pbHashObject,
[In] uint cbHashObject,
[In] uint dwFlags);
internal static extern int BCryptHashData(
#endif
BCryptHashHandle hHash,
byte *pbInput,
uint cbInput,
uint dwFlags);
internal static extern int BCryptFinishHash(
#endif
BCryptHashHandle hHash,
byte *pbOutput,
uint cbOutput,
uint dwFlags);
public Win7SP800_108_CTR_HMACSHA512Provider(byte *pbKdk, uint cbKdk)
{
_hashHandle = CachedAlgorithmHandles.HMAC_SHA512.CreateHmac(pbKdk, cbKdk);
}