5 X509_new, X509_free, X509_up_ref - X509 certificate ASN1 allocation functions
9 #include <openssl/x509.h>
12 void X509_free(X509 *a);
13 void X509_up_ref(X509 *a);
17 The X509 ASN1 allocation routines, allocate and free an
18 X509 structure, which represents an X509 certificate.
20 X509_new() allocates and initializes a X509 structure with reference count
23 X509_free() decrements the reference count of B<X509> structure B<a> and
24 frees it up if the reference count is zero. If B<a> is NULL nothing is done.
26 X509_up_ref() increments the reference count of B<a>.
30 The function X509_up_ref() if useful if a certificate structure is being
31 used by several different operations each of which will free it up after
32 use: this avoids the need to duplicate the entire certificate structure.
36 If the allocation fails, X509_new() returns B<NULL> and sets an error
37 code that can be obtained by L<ERR_get_error(3)>.
38 Otherwise it returns a pointer to the newly allocated structure.
40 X509_free() and X509_up_ref() do not return a value.
46 L<X509_CRL_get0_by_serial(3)>,
47 L<X509_get0_signature(3)>,
48 L<X509_get_ext_d2i(3)>,
49 L<X509_get_extension_flags(3)>,
50 L<X509_get_pubkey(3)>,
51 L<X509_get_subject_name(3)>,
52 L<X509_get_version(3)>,
53 L<X509_NAME_add_entry_by_txt(3)>,
54 L<X509_NAME_ENTRY_get_object(3)>,
55 L<X509_NAME_get_index_by_NID(3)>,
56 L<X509_NAME_print_ex(3)>,
59 L<X509_verify_cert(3)>