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X509_GET_VERSION(3) BSD Library Functions Manual X509_GET_VERSION(3)


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


#include <openssl/x509.h>


X509_get_version(const X509 *x);


X509_set_version(X509 *x, long version);


X509_REQ_get_version(const X509_REQ *req);


X509_REQ_set_version(X509_REQ *x, long version);


X509_CRL_get_version(const X509_CRL *crl);


X509_CRL_set_version(X509_CRL *x, long version);


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.

X509_get_version(), X509_REQ_get_version() and X509_CRL_get_version() are implemented as macros.


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.


d2i_X509(3), ERR_get_error(3), X509_CRL_get0_by_serial(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), X509_verify_cert(3), X509V3_get_d2i(3)


X509_get_version(), X509_set_version(), X509_REQ_get_version(), and X509_REQ_set_version() first appeared in SSLeay 0.6.5 and have been available since OpenBSD 2.4.

X509_CRL_get_version() first appeared in OpenSSL 0.9.2b and has been available since OpenBSD 2.6.

X509_CRL_set_version() first appeared in OpenSSL 0.9.7 and has been available since OpenBSD 3.2.

BSD March 27, 2018 BSD