5 X509_get_pubkey, X509_get0_pubkey, X509_set_pubkey, X509_get_X509_PUBKEY,
6 X509_REQ_get_pubkey, X509_REQ_set_pubkey, X509_REQ_get_X509_PUBKEY - get or
7 set certificate or certificate request public key.
11 #include <openssl/x509.h>
13 EVP_PKEY *X509_get_pubkey(X509 *x);
14 EVP_PKEY *X509_get0_pubkey(X509 *x);
15 int X509_set_pubkey(X509 *x, EVP_PKEY *pkey);
16 X509_PUBKEY *X509_get_X509_PUBKEY(X509 *x);
18 EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req);
19 int X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey);
20 X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *x);
24 X509_get_pubkey() attempts to decode the public key for certificate B<x>. If
25 successful it returns the public key as an B<EVP_PKEY> pointer with its
26 reference count incremented: this means the returned key must be freed up
27 after use. X509_get0_pubkey() is similar except it does B<not> increment
28 the reference count of the returned B<EVP_PKEY> so it must not be freed up
31 X509_get_X509_PUBKEY() returns an internal pointer to the B<X509_PUBKEY>
32 structure which encodes the certificate of B<x>. The returned value
33 must not be freed up after use.
35 X509_set_pubkey() attempts to set the public key for certificate B<x> to
36 B<pkey>. The key B<pkey> should be freed up after use.
38 X509_REQ_get_pubkey(), X509_REQ_set_pubkey() and X509_REQ_get_X509_PUBKEY()
39 are similar but operate on certificate request B<req>.
43 The first time a public key is decoded the B<EVP_PKEY> structure is
44 cached in the certificate or certificate request itself. Subsequent calls
45 return the cached structure with its reference count incremented to
50 X509_get_pubkey(), X509_get0_pubkey(), X509_get_X509_PUBKEY(),
51 X509_REQ_get_pubkey() and X509_REQ_get_X509_PUBKEY() return a public key or
52 B<NULL> if an error occurred.
54 X509_set_pubkey() and X509_REQ_set_pubkey() rerturn 1 for success and 0
61 L<X509_CRL_get0_by_serial(3)>,
62 L<X509_get0_signature(3)>,
63 L<X509_get_ext_d2i(3)>,
64 L<X509_get_extension_flags(3)>,
65 L<X509_get_subject_name(3)>,
66 L<X509_get_version(3)>,
67 L<X509_NAME_add_entry_by_txt(3)>,
68 L<X509_NAME_ENTRY_get_object(3)>,
69 L<X509_NAME_get_index_by_NID(3)>,
70 L<X509_NAME_print_ex(3)>,
74 L<X509_verify_cert(3)>