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.
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.
This page is part of the GnuTLS (GnuTLS Transport Layer Security
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⟨http://www.gnutls.org/⟩. If you have a bug report for this manual
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