gnutls_x509_crt_get_subject_unique_id - API function

NAME SYNOPSIS ARGUMENTS DESCRIPTION RETURNS REPORTING BUGS COPYRIGHT SEE ALSO

NAME

gnutls_x509_crt_get_subject_unique_id − API function

SYNOPSIS

#include <gnutls/x509.h>

int gnutls_x509_crt_get_subject_unique_id(gnutls_x509_crt_t crt, char * buf, size_t * buf_size);

ARGUMENTS

gnutls_x509_crt_t crt

Holds the certificate

char * buf

user allocated memory buffer, will hold the unique id

size_t * buf_size

size of user allocated memory buffer (on input), will hold actual size of the unique ID on return.

DESCRIPTION

This function will extract the subjectUniqueID value (if present) for the given certificate.

If the user allocated memory buffer is not large enough to hold the full subjectUniqueID, then a GNUTLS_E_SHORT_MEMORY_BUFFER error will be returned, and buf_size will be set to the actual length.

This function had a bug prior to 3.4.8 that prevented the setting of NULL buf to discover the buf_size . To use this function safely with the older versions the buf must be a valid buffer that can hold at least a single byte if buf_size is zero.