HashProviderCng() [4/4]

Internal.Cryptography.HashProviderCng.HashProviderCng ( string hashAlgId, ReadOnlySpan< byte > key, bool isHmac )

inlinepackage

Definition at line 27 of file HashProviderCng.cs.

    {
        global::Interop.BCrypt.BCryptOpenAlgorithmProviderFlags bCryptOpenAlgorithmProviderFlags = global::Interop.BCrypt.BCryptOpenAlgorithmProviderFlags.None;
        if (isHmac)
        {
            _key = key.ToArray();
            bCryptOpenAlgorithmProviderFlags |= global::Interop.BCrypt.BCryptOpenAlgorithmProviderFlags.BCRYPT_ALG_HANDLE_HMAC_FLAG;
        }
        _hAlgorithm = global::Interop.BCrypt.BCryptAlgorithmCache.GetCachedBCryptAlgorithmHandle(hashAlgId, bCryptOpenAlgorithmProviderFlags, out _hashSize);
        Microsoft.Win32.SafeHandles.SafeBCryptHashHandle phHash;
        global::Interop.BCrypt.NTSTATUS nTSTATUS = global::Interop.BCrypt.BCryptCreateHash(_hAlgorithm, out phHash, IntPtr.Zero, 0, key, (!(key == null)) ? key.Length : 0, global::Interop.BCrypt.BCryptCreateHashFlags.BCRYPT_HASH_REUSABLE_FLAG);
        switch (nTSTATUS)
        {
        case global::Interop.BCrypt.NTSTATUS.STATUS_INVALID_PARAMETER:
            phHash.Dispose();
            Reset();
            break;
        default:
            phHash.Dispose();
            throw global::Interop.BCrypt.CreateCryptographicException(nTSTATUS);
        case global::Interop.BCrypt.NTSTATUS.STATUS_SUCCESS:
            _hHash = phHash;
            _reusable = true;
            break;
        }
    }

References Internal.Cryptography.HashProviderCng._hAlgorithm, Internal.Cryptography.HashProviderCng._hashSize, Internal.Cryptography.HashProviderCng._hHash, Internal.Cryptography.HashProviderCng._key, Internal.Cryptography.HashProviderCng._reusable, System.Runtime.InteropServices.SafeHandle.Dispose(), System.key, Internal.Cryptography.HashProviderCng.Reset(), and System.IntPtr.Zero.