SecBuffer and SecBufferDesc Example Code

This example code demonstrates initializing an array of security buffers. It shows input security buffers initialized by the server side of a connection to prepare for a call to AcceptSecurityContext. Note that the last buffer contains the opaque security token received by the client and that the SECBUFFER_READONLY flag is set on SecBuffer.

SecBuffer  Buffers[3];
SecBufferDesc BufferDesc;
BYTE *pHeader;
BYTE *pMessage;
BYTE *pTrailer;

//--------------------------------------------------------------------
// pHeader, pMessage, and pTrailer are BYTE strings.
// In a working program, they would be assigned string values.

BufferDesc.ulVersion = SECBUFFER_VERSION;
BufferDesc.cBuffers = 3;
BufferDesc.pBuffers = Buffers;

Buffers[0].cbBuffer = sizeof(Protocol_Header);
Buffers[0].BufferType = SECBUFFER_READONLY | SECBUFFER_DATA;
Buffers[0].pvBuffer = pHeader;

Buffers[1].cbBuffer = pHeader->MessageSize;
Buffers[1].BufferType = SECBUFFER_DATA;
Buffers[1].pvBuffer = pMessage;

Buffers[2].cbBuffer = pHeader->TrailerSize;
Buffers[2].BufferType = SECBUFFER_READONLY | SECBUFFER_TOKEN;
Buffers[2].pvBuffer = pSecurityTrailer;