mirror of
https://github.com/openssl/openssl.git
synced 2024-11-27 05:21:51 +08:00
a047435774
RT1556: doc/crypto/threads.pod
RT2024: Missing pages mentioned in crypto.pod
RT2890: Wrong size in ERR_string_error description.
RT3461: Better description of PEM Encryption
(Jeffrey Walton <noloader@gmail.com>)
Also, fix up formatting and removed some code examples
that encourage unsafe patterns, like unencrypted private
keys (Rich Salz)
RT4240: Document some speed flags (Tomas Mraz <tmraz@redhat.com>)
RT4260: Fix return value doc for X509_REQ_sign and X509_sign
(Laetitia Baudoin <lbaudoin@google.com>)
Reviewed-by: Emilia Käsper <emilia@openssl.org>
91 lines
3.0 KiB
Plaintext
91 lines
3.0 KiB
Plaintext
=pod
|
|
|
|
=head1 NAME
|
|
|
|
X509_sign, X509_sign_ctx, X509_verify, X509_REQ_sign, X509_REQ_sign_ctx,
|
|
X509_REQ_verify, X509_CRL_sign, X509_CRL_sign_ctx, X509_CRL_verify -
|
|
sign or verify certificate, certificate request or CRL signature.
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
#include <openssl/x509.h>
|
|
|
|
int X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md);
|
|
int X509_sign_ctx(X509 *x, EVP_MD_CTX *ctx);
|
|
int X509_verify(X509 *a, EVP_PKEY *r);
|
|
|
|
int X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md);
|
|
int X509_REQ_sign_ctx(X509_REQ *x, EVP_MD_CTX *ctx);
|
|
int X509_REQ_verify(X509_REQ *a, EVP_PKEY *r);
|
|
|
|
int X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md);
|
|
int X509_CRL_sign_ctx(X509_CRL *x, EVP_MD_CTX *ctx);
|
|
int X509_CRL_verify(X509_CRL *a, EVP_PKEY *r);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
X509_sign() signs certificate B<x> using private key B<pkey> and message
|
|
digest B<md> and sets the signature in B<x>. X509_sign_ctx() also signs
|
|
certificate B<x> but uses the parameters contained in digest context B<ctx>.
|
|
|
|
X509_verify() verifies the signature of certificate B<x> using public key
|
|
B<pkey>. Only the signature is checked: no other checks (such as certificate
|
|
chain validity) are perfored.
|
|
|
|
X509_REQ_sign(), X509_REQ_sign_ctx(), X509_REQ_verify(),
|
|
X509_CRL_sign(), X509_CRL_sign_ctx() and X509_CRL_verify() sign and verify
|
|
certificate requests and CRLs respectively.
|
|
|
|
=head1 NOTES
|
|
|
|
X509_sign_ctx() is used where the default parameters for the corresponding
|
|
public key and digest are not suitable. It can be used to sign keys using
|
|
RSA-PSS for example.
|
|
|
|
For efficiency reasons and to work around ASN.1 encoding issues the encoding
|
|
of the signed portion of a certificate, certificate request and CRL is cached
|
|
internally. If the signed portion of the structure is modified the encoding
|
|
is not always updated meaning a stale version is sometimes used. This is not
|
|
normally a problem because modifying the signed portion will invalidate the
|
|
signature and signing will always update the encoding.
|
|
|
|
=head1 RETURN VALUES
|
|
|
|
X509_sign(), X509_sign_ctx(), X509_REQ_sign(), X509_REQ_sign_ctx(),
|
|
X509_CRL_sign() and X509_CRL_sign_ctx() return the size of the signature
|
|
in bytes for success and zero for failure.
|
|
|
|
X509_verify(), X509_REQ_verify() and X509_CRL_verify() return 1 if the
|
|
signature is valid and 0 if the signature check fails. If the signature
|
|
could not be checked at all because it was invalid or some other error
|
|
occurred then -1 is returned.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<d2i_X509(3)>,
|
|
L<ERR_get_error(3)>,
|
|
L<X509_CRL_get0_by_serial(3)>,
|
|
L<X509_get0_signature(3)>,
|
|
L<X509_get_ext_d2i(3)>,
|
|
L<X509_get_extension_flags(3)>,
|
|
L<X509_get_pubkey(3)>,
|
|
L<X509_get_subject_name(3)>,
|
|
L<X509_get_version(3)>,
|
|
L<X509_NAME_add_entry_by_txt(3)>,
|
|
L<X509_NAME_ENTRY_get_object(3)>,
|
|
L<X509_NAME_get_index_by_NID(3)>,
|
|
L<X509_NAME_print_ex(3)>,
|
|
L<X509_new(3)>,
|
|
L<X509V3_get_d2i(3)>,
|
|
L<X509_verify_cert(3)>
|
|
|
|
=head1 HISTORY
|
|
|
|
X509_sign(), X509_REQ_sign() and X509_CRL_sign() are available in all
|
|
versions of OpenSSL.
|
|
|
|
X509_sign_ctx(), X509_REQ_sign_ctx() and X509_CRL_sign_ctx() were first added
|
|
to OpenSSL 1.0.1.
|
|
|
|
=cut
|