ChangeKeyImpl()

byte[] Internal.Cryptography.HMACCommon.ChangeKeyImpl ( ReadOnlySpan< byte > key )

inlineprivate

Definition at line 44 of file HMACCommon.cs.

    {
        byte[] result = null;
        if (key.Length > _blockSize && _blockSize > 0)
        {
            if (_lazyHashProvider == null)
            {
                _lazyHashProvider = HashProviderDispenser.CreateHashProvider(_hashAlgorithmId);
            }
            _lazyHashProvider.AppendHashData(key);
            result = _lazyHashProvider.FinalizeHashAndReset();
        }
        HashProvider hMacProvider = _hMacProvider;
        _hMacProvider = null;
        hMacProvider?.Dispose(disposing: true);
        _hMacProvider = HashProviderDispenser.CreateMacProvider(_hashAlgorithmId, key);
        return result;
    }

References Internal.Cryptography.HMACCommon._blockSize, Internal.Cryptography.HMACCommon._hashAlgorithmId, Internal.Cryptography.HMACCommon._hMacProvider, Internal.Cryptography.HMACCommon._lazyHashProvider, Internal.Cryptography.HashProvider.AppendHashData(), Internal.Cryptography.HashProviderDispenser.CreateHashProvider(), Internal.Cryptography.HashProviderDispenser.CreateMacProvider(), Internal.Cryptography.HashProvider.Dispose(), Internal.Cryptography.HashProvider.FinalizeHashAndReset(), and System.key.

Referenced by Internal.Cryptography.HMACCommon.HMACCommon(), and Internal.Cryptography.HMACCommon.ChangeKey().