libressl-X509_get_version3
Get or set certificate, certificate request, or crl version
Usage
Crypto Library (libcrypto, -lcrypto)
#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);
Overview
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.
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 or 0 for failure. In some cases of failure, the reason can be determined with ERR_get_error(3).