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e7fabc5e DSH |
1 | =pod |
2 | ||
3 | =head1 NAME | |
4 | ||
5 | X509_get_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. | |
8 | ||
9 | =head1 SYNOPSIS | |
10 | ||
11 | #include <openssl/x509.h> | |
12 | ||
13 | EVP_PKEY *X509_get_pubkey(X509 *x); | |
14 | int X509_set_pubkey(X509 *x, EVP_PKEY *pkey); | |
15 | X509_PUBKEY *X509_get_X509_PUBKEY(X509 *x); | |
16 | ||
17 | EVP_PKEY *X509_REQ_get_pubkey(X509_REQ *req); | |
18 | int X509_REQ_set_pubkey(X509_REQ *x, EVP_PKEY *pkey); | |
19 | X509_PUBKEY *X509_REQ_get_X509_PUBKEY(X509_REQ *x); | |
20 | ||
21 | =head1 DESCRIPTION | |
22 | ||
23 | X509_get_pubkey() attempts to decode the public key for certificate B<x>. If | |
24 | successful it returns the public key as an B<EVP_PKEY> pointer with its | |
25 | reference count incremented: this means the returned key must be freed up | |
26 | after use. | |
27 | ||
28 | X509_get_X509_PUBKEY() returns an internal pointer to the B<X509_PUBKEY> | |
29 | structure which encodes the certificate of B<x>. The returned value | |
30 | must not be freed up after use. | |
31 | ||
32 | X509_set_pubkey() attempts to set the public key for certificate B<x> to | |
33 | B<pkey>. The key B<pkey> should be freed up after use. | |
34 | ||
35 | X509_REQ_get_pubkey(), X509_REQ_set_pubkey() and X509_REQ_get_X509_PUBKEY() | |
36 | are similar but operate on certificate request B<req>. | |
37 | ||
38 | =head1 NOTES | |
39 | ||
40 | The first time a public key is decoded the B<EVP_PKEY> structure is | |
41 | cached in the certificate or certificate request itself. Subsequent calls | |
42 | return the cached structure with its reference count incremented to | |
43 | improve performance. | |
44 | ||
45 | =head1 RETURN VALUES | |
46 | ||
47 | X509_get_pubkey(), X509_get_X509_PUBKEY(), X509_REQ_get_pubkey() and | |
48 | X509_REQ_get_X509_PUBKEY() return a public key or B<NULL> if an error | |
49 | occurred. | |
50 | ||
51 | X509_set_pubkey() and X509_REQ_set_pubkey() rerturn 1 for success and 0 | |
52 | for failure. | |
53 | ||
54 | =head1 SEE ALSO | |
55 | ||
56 | L<d2i_X509(3)>, | |
57 | L<ERR_get_error(3)>, | |
58 | L<X509_CRL_get0_by_serial(3)>, | |
59 | L<X509_get0_signature(3)>, | |
60 | L<X509_get_ext_d2i(3)>, | |
61 | L<X509_get_extension_flags(3)>, | |
62 | L<X509_get_subject_name(3)>, | |
63 | L<X509_get_version(3)>, | |
64 | L<X509_NAME_add_entry_by_txt(3)>, | |
65 | L<X509_NAME_ENTRY_get_object(3)>, | |
66 | L<X509_NAME_get_index_by_NID(3)>, | |
67 | L<X509_NAME_print_ex(3)>, | |
68 | L<X509_new(3)>, | |
69 | L<X509_sign(3)>, | |
70 | L<X509V3_get_d2i(3)>, | |
71 | L<X509_verify_cert(3)> | |
72 | ||
73 | =head1 HISTORY | |
74 | ||
75 | =cut |