This function verifies the signature of a message at the other end.
At a Glance
| Header file: | Sspi.h |
| Windows CE versions: | 2.10 and later |
Syntax
SECURITY_STATUS VerifySignature( PCtxtHandle phContext,
PSecBufferDesc pMessage, ULONG MessageSeqNo, PULONG pfQOP );
Parameters
phContext
[in] Pointer to the handle to the context to use for the message.
pMessage
[in] Pointer to a SecBufferDesc structure that references a set of SecBuffer structures that contain the message and signature to verify. The signature is in a SecBuffer structure of type SECBUFFER_TOKEN.
MessageSeqNo
[in] Specifies the sequence number expected by the transport application, if any. If the transport application does not maintain sequence numbers, this parameter is zero.
pfQOP
[out] Pointer to a ULONG variable that receives package-specific flags that indicate the quality of protection.
Return Values
SEC_E_OK indicates that the function 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, one of the error values described in the following table is returned.
| 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. |
Remarks
The VerifySignature function verifies that the message received was correct according to the information in the signature.
See Also