DecryptMessage()

static unsafe SecurityStatusPal System.Net.Security.SslStreamPal.DecryptMessage ( SafeDeleteSslContext securityContext, Span< byte > buffer, out int offset, out int count )

inlinestatic

Definition at line 245 of file SslStreamPal.cs.

    {
        fixed (byte* ptr3 = buffer)
        {
            global::Interop.SspiCli.SecBuffer* ptr = stackalloc global::Interop.SspiCli.SecBuffer[4];
            global::Interop.SspiCli.SecBuffer* ptr2 = ptr;
            ptr2->BufferType = SecurityBufferType.SECBUFFER_DATA;
            ptr2->pvBuffer = (IntPtr)ptr3;
            ptr2->cbBuffer = buffer.Length;
            for (int i = 1; i < 4; i++)
            {
                global::Interop.SspiCli.SecBuffer* ptr4 = ptr + i;
                ptr4->BufferType = SecurityBufferType.SECBUFFER_EMPTY;
                ptr4->pvBuffer = IntPtr.Zero;
                ptr4->cbBuffer = 0;
            }
            global::Interop.SspiCli.SecBufferDesc secBufferDesc = new global::Interop.SspiCli.SecBufferDesc(4);
            secBufferDesc.pBuffers = ptr;
            global::Interop.SspiCli.SecBufferDesc inputOutput = secBufferDesc;
            global::Interop.SECURITY_STATUS sECURITY_STATUS = (global::Interop.SECURITY_STATUS)GlobalSSPI.SSPISecureChannel.DecryptMessage(securityContext, ref inputOutput, 0u);
            count = 0;
            offset = 0;
            for (int j = 0; j < 4; j++)
            {
                if ((sECURITY_STATUS == global::Interop.SECURITY_STATUS.OK && ptr[j].BufferType == SecurityBufferType.SECBUFFER_DATA) || (sECURITY_STATUS != 0 && ptr[j].BufferType == SecurityBufferType.SECBUFFER_EXTRA))
                {
                    offset = (int)((byte*)(void*)ptr[j].pvBuffer - ptr3);
                    count = ptr[j].cbBuffer;
                    break;
                }
            }
            return SecurityStatusAdapterPal.GetSecurityStatusPalFromInterop(sECURITY_STATUS);
        }
    }

References System.buffer, System.count, System.Net.SecurityStatusAdapterPal.GetSecurityStatusPalFromInterop(), System.offset, System.Net.GlobalSSPI.SSPISecureChannel, and System.IntPtr.Zero.

Referenced by System.Net.Security.SecureChannel.Decrypt().