SecurityFunctionTableW structure (sspi.h)
The SecurityFunctionTable structure is a dispatch table that contains pointers to the functions defined in SSPI.
Syntax
typedef struct _SECURITY_FUNCTION_TABLE_W {
unsigned long dwVersion;
ENUMERATE_SECURITY_PACKAGES_FN_W EnumerateSecurityPackagesW;
QUERY_CREDENTIALS_ATTRIBUTES_FN_W QueryCredentialsAttributesW;
ACQUIRE_CREDENTIALS_HANDLE_FN_W AcquireCredentialsHandleW;
FREE_CREDENTIALS_HANDLE_FN FreeCredentialsHandle;
void *Reserved2;
INITIALIZE_SECURITY_CONTEXT_FN_W InitializeSecurityContextW;
ACCEPT_SECURITY_CONTEXT_FN AcceptSecurityContext;
COMPLETE_AUTH_TOKEN_FN CompleteAuthToken;
DELETE_SECURITY_CONTEXT_FN DeleteSecurityContext;
APPLY_CONTROL_TOKEN_FN ApplyControlToken;
QUERY_CONTEXT_ATTRIBUTES_FN_W QueryContextAttributesW;
IMPERSONATE_SECURITY_CONTEXT_FN ImpersonateSecurityContext;
REVERT_SECURITY_CONTEXT_FN RevertSecurityContext;
MAKE_SIGNATURE_FN MakeSignature;
VERIFY_SIGNATURE_FN VerifySignature;
FREE_CONTEXT_BUFFER_FN FreeContextBuffer;
QUERY_SECURITY_PACKAGE_INFO_FN_W QuerySecurityPackageInfoW;
void *Reserved3;
void *Reserved4;
EXPORT_SECURITY_CONTEXT_FN ExportSecurityContext;
IMPORT_SECURITY_CONTEXT_FN_W ImportSecurityContextW;
ADD_CREDENTIALS_FN_W AddCredentialsW;
void *Reserved8;
QUERY_SECURITY_CONTEXT_TOKEN_FN QuerySecurityContextToken;
ENCRYPT_MESSAGE_FN EncryptMessage;
DECRYPT_MESSAGE_FN DecryptMessage;
SET_CONTEXT_ATTRIBUTES_FN_W SetContextAttributesW;
SET_CREDENTIALS_ATTRIBUTES_FN_W SetCredentialsAttributesW;
CHANGE_PASSWORD_FN_W ChangeAccountPasswordW;
void *Reserved9;
QUERY_CONTEXT_ATTRIBUTES_EX_FN_W QueryContextAttributesExW;
QUERY_CREDENTIALS_ATTRIBUTES_EX_FN_W QueryCredentialsAttributesExW;
} SecurityFunctionTableW, *PSecurityFunctionTableW;
Members
dwVersion
Version number of the table.
EnumerateSecurityPackagesW
QueryCredentialsAttributesW
AcquireCredentialsHandleW
FreeCredentialsHandle
Pointer to the FreeCredentialsHandle function.
Reserved2
Reserved for future use.
InitializeSecurityContextW
AcceptSecurityContext
Pointer to the AcceptSecurityContext (General) function.
CompleteAuthToken
Pointer to the CompleteAuthToken function.
DeleteSecurityContext
Pointer to the DeleteSecurityContext function.
ApplyControlToken
Pointer to the ApplyControlToken function.
QueryContextAttributesW
ImpersonateSecurityContext
Pointer to the ImpersonateSecurityContext function.
RevertSecurityContext
Pointer to the RevertSecurityContext function.
MakeSignature
Pointer to the MakeSignature function.
VerifySignature
Pointer to the VerifySignature function.
FreeContextBuffer
Pointer to the FreeContextBuffer function.
QuerySecurityPackageInfoW
Reserved3
Reserved for future use.
Reserved4
Reserved for future use.
ExportSecurityContext
Pointer to the ExportSecurityContext function.
ImportSecurityContextW
AddCredentialsW
Reserved8
Reserved for future use.
QuerySecurityContextToken
Pointer to the QuerySecurityContextToken function.
EncryptMessage
Pointer to the EncryptMessage (General) function.
DecryptMessage
Pointer to the DecryptMessage (General) function.
SetContextAttributesW
SetCredentialsAttributesW
ChangeAccountPasswordW
Reserved9
QueryContextAttributesExW
QueryCredentialsAttributesExW
Remarks
Note
The sspi.h header defines SecurityFunctionTable as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.
QueryContextAttributesExW and QueryCredentialsAttributesW are not initialized.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | sspi.h (include Security.h) |