Linux Manuals session 3

gnutls_x509_crt_get_issuer_dn2 – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer_dn2(gnutls_x509_crt_t cert, gnutls_datum_t * dn); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure gnutls_datum_t * dn a pointer to a structure to hold the nameDescriptionThis function will allocate buffer and copy the name of issuer of the Certificate. The name will be in the form "C=xxxx,O=yyyy,CN=zzzz" as described in…

gnutls_x509_crt_get_issuer_dn – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer_dn(gnutls_x509_crt_t cert, char * buf, size_t * buf_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure char * buf a pointer to a structure to hold the name (may be null) size_t * buf_size initially holds the size of bufDescriptionThis function will copy the name of the Certificate issuer…

gnutls_x509_crt_get_issuer_alt_othername_oid – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer_alt_othername_oid(gnutls_x509_crt_t cert, unsigned int seq, void * ret, size_t * ret_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned int seq specifies the sequence number of the alt name (0 for the first one, 1 for the second etc.) void * ret is the place where the otherName…

gnutls_x509_crt_get_issuer_alt_name2 – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer_alt_name2(gnutls_x509_crt_t cert, unsigned int seq, void * ian, size_t * ian_size, unsigned int * ian_type, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned int seq specifies the sequence number of the alt name (0 for the first one, 1 for the second etc.) void…

gnutls_x509_crt_get_issuer_alt_name – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer_alt_name(gnutls_x509_crt_t cert, unsigned int seq, void * ian, size_t * ian_size, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned int seq specifies the sequence number of the alt name (0 for the first one, 1 for the second etc.) void * ian is the…

gnutls_x509_crt_get_issuer – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_issuer(gnutls_x509_crt_t cert, gnutls_x509_dn_t * dn); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure gnutls_x509_dn_t * dn output variable with pointer to uint8_t DNDescriptionReturn the Certificate’s Issuer DN as a gnutls_x509_dn_t data type, that can be decoded using gnutls_x509_dn_get_rdn_ava(). Note that dn should be treated as constant. Because it points…

gnutls_x509_crt_get_fingerprint – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_fingerprint(gnutls_x509_crt_t cert, gnutls_digest_algorithm_t algo, void * buf, size_t * buf_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure gnutls_digest_algorithm_t algo is a digest algorithm void * buf a pointer to a structure to hold the fingerprint (may be null) size_t * buf_size initially holds the size of bufDescriptionThis function…

gnutls_x509_crt_get_extension_oid – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_oid(gnutls_x509_crt_t cert, int indx, void * oid, size_t * oid_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure int indx Specifies which extension OID to send. Use (0) to get the first one. void * oid a pointer to a structure to hold the OID (may be null) size_t…

gnutls_x509_crt_get_extension_info – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_info(gnutls_x509_crt_t cert, int indx, void * oid, size_t * oid_size, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure int indx Specifies which extension OID to send. Use (0) to get the first one. void * oid a pointer to a structure to hold the OID…

gnutls_x509_crt_get_extension_data2 – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_data2(gnutls_x509_crt_t cert, unsigned indx, gnutls_datum_t * data); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned indx Specifies which extension OID to read. Use (0) to get the first one. gnutls_datum_t * data will contain the extension DER-encoded dataDescriptionThis function will return the requested by the index extension data…

gnutls_x509_crt_get_extension_data – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_data(gnutls_x509_crt_t cert, int indx, void * data, size_t * sizeof_data); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure int indx Specifies which extension OID to send. Use (0) to get the first one. void * data a pointer to a structure to hold the data (may be null) size_t…

gnutls_x509_crt_get_extension_by_oid2 – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_by_oid2(gnutls_x509_crt_t cert, const char * oid, int indx, gnutls_datum_t * output, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure const char * oid holds an Object Identified in null terminated string int indx In case multiple same OIDs exist in the extensions, this specifies which…

gnutls_x509_crt_get_extension_by_oid – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_extension_by_oid(gnutls_x509_crt_t cert, const char * oid, int indx, void * buf, size_t * buf_size, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure const char * oid holds an Object Identified in null terminated string int indx In case multiple same OIDs exist in the extensions,…

gnutls_x509_crt_get_expiration_time – API function Synopsis#include <gnutls/x509.h> time_t gnutls_x509_crt_get_expiration_time(gnutls_x509_crt_t cert); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structureDescriptionThis function will return the time this Certificate was or will be expired. The no well defined expiration time can be checked against with the GNUTLS_X509_NO_WELL_DEFINED_EXPIRATION macro. Returnsexpiration time, or (time_t)-1 on error. Reporting BugsReport bugs to <bugs [at] gnutls.org>….

gnutls_x509_crt_get_dn_oid – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_dn_oid(gnutls_x509_crt_t cert, int indx, void * oid, size_t * oid_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure int indx This specifies which OID to return. Use (0) to get the first one. void * oid a pointer to a buffer to hold the OID (may be null) size_t…

gnutls_x509_crt_get_dn_by_oid – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_dn_by_oid(gnutls_x509_crt_t cert, const char * oid, int indx, unsigned int raw_flag, void * buf, size_t * buf_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure const char * oid holds an Object Identified in null terminated string int indx In case multiple same OIDs exist in the RDN, this…

gnutls_x509_crt_get_dn2 – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_dn2(gnutls_x509_crt_t cert, gnutls_datum_t * dn); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure gnutls_datum_t * dn a pointer to a structure to hold the nameDescriptionThis function will allocate buffer and copy the name of the Certificate. The name will be in the form "C=xxxx,O=yyyy,CN=zzzz" as described in RFC4514. The…

gnutls_x509_crt_get_dn – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_dn(gnutls_x509_crt_t cert, char * buf, size_t * buf_size); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure char * buf a pointer to a structure to hold the name (may be null) size_t * buf_size initially holds the size of bufDescriptionThis function will copy the name of the Certificate in…

gnutls_x509_crt_get_crl_dist_points – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_crl_dist_points(gnutls_x509_crt_t cert, unsigned int seq, void * san, size_t * san_size, unsigned int * reason_flags, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned int seq specifies the sequence number of the distribution point (0 for the first one, 1 for the second etc.) void…

gnutls_x509_crt_get_ca_status – API function Synopsis#include <gnutls/x509.h> int gnutls_x509_crt_get_ca_status(gnutls_x509_crt_t cert, unsigned int * critical); Argumentsgnutls_x509_crt_t cert should contain a gnutls_x509_crt_t structure unsigned int * critical will be non-zero if the extension is marked as criticalDescriptionThis function will return certificates CA status, by reading the basicConstraints X.509 extension (2.5.29.19). If the certificate is a CA a positive…