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WinTrustSubjectGetName info

The WinTrustSubjectGetName function retrieves the name of a subject from a PKCS #7 Signed Data certificate that represents the subject. A trust provider can use the name to store and retrieve certificates associated with the subject.

BOOL WinTrustSubjectGetName(

    LPWIN_TRUST_SIP_SUBJECT  lpSubject,

// pointer to description of the subject

    LPWIN_CERTIFICATE lpSignedData,

// pointer to a signed data certificate

    LPWSTR lpBuffer,

// pointer to a buffer that receives the subject name

    LPDWORD lpRequiredLength

// pointer to the size, in bytes, of the buffer

   );

Parameters

lpSubject
Pointer to a WIN_TRUST_SIP_SUBJECT structure that identifies the type of subject. Note that the function retrieves the subjectís name from the lpSignedData structure, not from the subject.
lpSignedData
Pointer to a WIN_CERTIFICATE structure that contains a PKCS #7 Signed Data structure. The function retrieves the subject name from the data associated with this structure.
lpBuffer
Pointer to a buffer that receives a null-terminated, Unicode string that names the subject.
lpRequiredLength
Pointer to a DWORD. On input, it specifies the size, in bytes, of the lpBuffer buffer. On output, it receives the size, in bytes, of the returned string, including the terminating null character. If the buffer is not large enough to hold the string, the function fails, and lpRequiredLength returns the required buffer size.

Return Values

If the function succeeds, the return value is a nonzero value.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

A trust provider calls the WinTrust implementation of the WinTrustSubjectGetName function. WinTrust then calls the WinTrustSubjectGetName implementation of the appropriate Subject Interface Package (SIP). The appropriate SIP is the one registered to handle the type of subject specified by the lpSubject parameter.

Each Subject Interface Package (SIP) DLL must implement the WinTrustSubjectGetName function. WinTrust gets a pointer to the SIPís WinTrustSubjectGetName implementation when WinTrust calls the SIPís WinTrustSipInitialize initialization function.

A SIPís implementation of WinTrustSubjectGetName returns a name associated with the subject. This may be a filename, if the subject is a file, or some other string that identifies the subject. The purpose of this function is to provide a string that a trust provider can use to store and retrieve certificates associated with the subject. The name does not need to be unique, but it should identify the subject and be the same each time it is retrieved.

The LPWINTRUST_SUBJECT_GET_NAME type is a pointer to a WinTrustSubjectGetName function.

See Also

WIN_CERTIFICATE, WIN_TRUST_SIP_SUBJECT, WinTrustSipInitialize 

See also:


file: /Techref/os/win/api/win32/func/src/f91_31.htm, 4KB, , updated: 2000/4/7 12:13, local time: 2022/5/23 18:08,
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