NAME

       X509_get_version, X509_set_version, X509_REQ_get_version, X509_REQ_set_version,
       X509_CRL_get_version, X509_CRL_set_version - get or set certificate, certificate request
       or CRL version

SYNOPSIS

        #include <openssl/x509.h>

        long X509_get_version(const X509 *x);
        int X509_set_version(X509 *x, long version);

        long X509_REQ_get_version(const X509_REQ *req);
        int X509_REQ_set_version(X509_REQ *x, long version);

        long X509_CRL_get_version(const X509_CRL *crl);
        int X509_CRL_set_version(X509_CRL *x, long version);

DESCRIPTION

       X509_get_version() returns the numerical value of the version field of certificate x.
       Note: this is defined by standards (X.509 et al) to be one less than the certificate
       version. So a version 3 certificate will return 2 and a version 1 certificate will return
       0.

       X509_set_version() sets the numerical value of the version field of certificate x to
       version.

       Similarly X509_REQ_get_version(), X509_REQ_set_version(), X509_CRL_get_version() and
       X509_CRL_set_version() get and set the version number of certificate requests and CRLs.

NOTES

       The version field of certificates, certificate requests and CRLs has a DEFAULT value of
       v1(0) meaning the field should be omitted for version 1. This is handled transparently by
       these functions.

RETURN VALUES

       X509_get_version(), X509_REQ_get_version() and X509_CRL_get_version() return the numerical
       value of the version field.

       X509_set_version(), X509_REQ_set_version() and X509_CRL_set_version() return 1 for success
       and 0 for failure.

SEE ALSO

       d2i_X509(3), ERR_get_error(3), X509_CRL_get0_by_serial(3), X509_get0_signature(3),
       X509_get_ext_d2i(3), X509_get_extension_flags(3), X509_get_pubkey(3),
       X509_get_subject_name(3), X509_NAME_add_entry_by_txt(3), X509_NAME_ENTRY_get_object(3),
       X509_NAME_get_index_by_NID(3), X509_NAME_print_ex(3), X509_new(3), X509_sign(3),
       X509V3_get_d2i(3), X509_verify_cert(3)

HISTORY

       X509_get_version(), X509_REQ_get_version() and X509_CRL_get_version() are functions in
       OpenSSL 1.1.0, in previous versions they were macros.

COPYRIGHT

       Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the OpenSSL license (the "License").  You may not use this file except in
       compliance with the License.  You can obtain a copy in the file LICENSE in the source
       distribution or at <https://www.openssl.org/source/license.html>.