UnsealMessage
A version of this page is also available for
4/8/2010
This function unseals a message that has been sealed with a call to SealMessage.
Syntax
SECURITY_STATUS SEC_ENTRY UnsealMessage(
PCtxtHandle phContext,
PSecBufferDesc pMessage,
ULONG MessageSeqNo,
ULONG* pfQOP
);
Parameters
- phContext
[in] Pointer to a CtxtHandle structure identifying the context handle. For information on CtxtHandle, see SSPI Handles.
- pMessage
[in, out] Pointer to a SecBufferDesc structure that references a set of SecBuffer structures that contains the message to unseal.
- MessageSeqNo
[in] The message sequence number expected by the transport application, if any. If the transport application does not maintain sequence numbers, this parameter is zero.
- pfQOP
[in] Pointer to package-specific flags that indicate the quality of protection.
Return Value
This function returns SEC_E_OK to indicate that it verified that the message was received in the correct sequence and had not been modified. If the function determines that the message is not correct according to the information in the signature, it returns one of the error values described in the following table.
| Value | Description |
|---|---|
SEC_E_OUT_OF_SEQUENCE |
The message was not received in the correct sequence. |
SEC_E_MESSAGE_ALTERED |
The message has been altered. |
Requirements
| Header | sspi.h |
| Library | secur32.lib |
| Windows Embedded CE | Windows CE 2.10 and later |
| Windows Mobile | Pocket PC 2000 and later, Smartphone 2002 and later |