public void Unwrap(int messageLength, byte[] encryptedBuffer,
out byte[] decryptedBuffer)
{
decryptedBuffer = null;
WindowsAPI.SECURITY_HANDLE decryptionContext = _clientContextHandle;
byte[] encryptedMessage = new byte[messageLength];
Array.Copy(encryptedBuffer, 0, encryptedMessage, 0, messageLength);
WindowsAPI.MultipleSecBufferHelper[] secHelper = new WindowsAPI.MultipleSecBufferHelper[2];
secHelper[0] = new WindowsAPI.MultipleSecBufferHelper(encryptedMessage, WindowsAPI.SecBufferType.SECBUFFER_STREAM);
secHelper[1] = new WindowsAPI.MultipleSecBufferHelper(null, WindowsAPI.SecBufferType.SECBUFFER_DATA);
WindowsAPI.SecBufferDesc descBuffer = new WindowsAPI.SecBufferDesc(secHelper);
try
{
uint encryptionQuality = 0;
var ss = WindowsAPI.DecryptMessage(ref decryptionContext, ref descBuffer, 0, out encryptionQuality);
if (ss != WindowsAPI.SEC_E_OK)
{
throw WindowsAPI.CreateException(ss, "DecryptMessage() failed!!!");
}
decryptedBuffer = new byte[messageLength];
Array.Copy(descBuffer.GetSecBufferByteArray(), 0, decryptedBuffer, 0, messageLength);
}
finally
{
descBuffer.Dispose();
}
}
public void Wrap(byte[] message, out byte[] encryptedBuffer)
{
encryptedBuffer = null;
WindowsAPI.SECURITY_HANDLE encryptionContext = _clientContextHandle;
WindowsAPI.SecPkgContext_Sizes contextSizes = new WindowsAPI.SecPkgContext_Sizes();
{
var resultCode = WindowsAPI.QueryContextAttributes(ref encryptionContext, WindowsAPI.SECPKG_ATTR_SIZES, out contextSizes);
if (resultCode != WindowsAPI.SEC_E_OK)
{
throw WindowsAPI.CreateException(resultCode, "QueryContextAttribute() failed!!!");
}
}
WindowsAPI.MultipleSecBufferHelper[] secHelper = new WindowsAPI.MultipleSecBufferHelper[3];
secHelper[0] = new WindowsAPI.MultipleSecBufferHelper(contextSizes.cbSecurityTrailer, WindowsAPI.SecBufferType.SECBUFFER_TOKEN);
secHelper[1] = new WindowsAPI.MultipleSecBufferHelper(message, WindowsAPI.SecBufferType.SECBUFFER_DATA);
secHelper[2] = new WindowsAPI.MultipleSecBufferHelper(contextSizes.cbBlockSize, WindowsAPI.SecBufferType.SECBUFFER_PADDING);
WindowsAPI.SecBufferDesc descBuffer = new WindowsAPI.SecBufferDesc(secHelper);
try
{
var resultCode = WindowsAPI.EncryptMessage(ref encryptionContext, WindowsAPI.SECQOP_WRAP_NO_ENCRYPT, ref descBuffer, 0);
if (resultCode != WindowsAPI.SEC_E_OK)
{
throw WindowsAPI.CreateException(resultCode, "EncryptMessage() failed!!!");
}
encryptedBuffer = descBuffer.GetSecBufferByteArray();
}
finally
{
descBuffer.Dispose();
}
}
public void Wrap(byte[] message, out byte[] encryptedBuffer)
{
encryptedBuffer = null;
WindowsAPI.SECURITY_HANDLE encryptionContext = _clientContextHandle;
WindowsAPI.SecPkgContext_Sizes contextSizes = new WindowsAPI.SecPkgContext_Sizes();
{
var resultCode = WindowsAPI.QueryContextAttributes(ref encryptionContext, WindowsAPI.SECPKG_ATTR_SIZES, out contextSizes);
if (resultCode != WindowsAPI.SEC_E_OK)
throw WindowsAPI.CreateException(resultCode, "QueryContextAttribute() failed!!!");
}
WindowsAPI.MultipleSecBufferHelper[] secHelper = new WindowsAPI.MultipleSecBufferHelper[3];
secHelper[0] = new WindowsAPI.MultipleSecBufferHelper(contextSizes.cbSecurityTrailer, WindowsAPI.SecBufferType.SECBUFFER_TOKEN);
secHelper[1] = new WindowsAPI.MultipleSecBufferHelper(message, WindowsAPI.SecBufferType.SECBUFFER_DATA);
secHelper[2] = new WindowsAPI.MultipleSecBufferHelper(contextSizes.cbBlockSize, WindowsAPI.SecBufferType.SECBUFFER_PADDING);
WindowsAPI.SecBufferDesc descBuffer = new WindowsAPI.SecBufferDesc(secHelper);
try
{
var resultCode = WindowsAPI.EncryptMessage(ref encryptionContext, WindowsAPI.SECQOP_WRAP_NO_ENCRYPT, ref descBuffer, 0);
if (resultCode != WindowsAPI.SEC_E_OK)
throw WindowsAPI.CreateException(resultCode, "EncryptMessage() failed!!!");
encryptedBuffer = descBuffer.GetSecBufferByteArray();
}
finally
{
descBuffer.Dispose();
}
}
public void Unwrap(int messageLength, byte[] encryptedBuffer,
out byte[] decryptedBuffer)
{
decryptedBuffer = null;
WindowsAPI.SECURITY_HANDLE decryptionContext = _clientContextHandle;
byte[] encryptedMessage = new byte[messageLength];
Array.Copy(encryptedBuffer, 0, encryptedMessage, 0, messageLength);
WindowsAPI.MultipleSecBufferHelper[] secHelper = new WindowsAPI.MultipleSecBufferHelper[2];
secHelper[0] = new WindowsAPI.MultipleSecBufferHelper(encryptedMessage, WindowsAPI.SecBufferType.SECBUFFER_STREAM);
secHelper[1] = new WindowsAPI.MultipleSecBufferHelper(null, WindowsAPI.SecBufferType.SECBUFFER_DATA);
WindowsAPI.SecBufferDesc descBuffer = new WindowsAPI.SecBufferDesc(secHelper);
try
{
uint encryptionQuality = 0;
var ss = WindowsAPI.DecryptMessage(ref decryptionContext, ref descBuffer, 0, out encryptionQuality);
if (ss != WindowsAPI.SEC_E_OK)
throw WindowsAPI.CreateException(ss, "DecryptMessage() failed!!!");
decryptedBuffer = new byte[messageLength];
Array.Copy(descBuffer.GetSecBufferByteArray(), 0, decryptedBuffer, 0, messageLength);
}
finally
{
descBuffer.Dispose();
}
}
