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X509_get_version.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "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 .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #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); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBX509_get_version()\fR returns the numerical value of the version field of certificate \fBx\fR. 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. .PP \&\fBX509_set_version()\fR sets the numerical value of the version field of certificate \&\fBx\fR to \fBversion\fR. .PP Similarly \fBX509_REQ_get_version()\fR, \fBX509_REQ_set_version()\fR, \&\fBX509_CRL_get_version()\fR and \fBX509_CRL_set_version()\fR get and set the version number of certificate requests and CRLs. .SH "NOTES" .IX Header "NOTES" The version field of certificates, certificate requests and CRLs has a \&\s-1DEFAULT\s0 value of \fB\fBv1\fB\|(0)\fR meaning the field should be omitted for version 1. This is handled transparently by these functions. .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBX509_get_version()\fR, \fBX509_REQ_get_version()\fR and \fBX509_CRL_get_version()\fR return the numerical value of the version field. .PP \&\fBX509_set_version()\fR, \fBX509_REQ_set_version()\fR and \fBX509_CRL_set_version()\fR return 1 for success and 0 for failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBd2i_X509\fR\|(3), \&\fBERR_get_error\fR\|(3), \&\fBX509_CRL_get0_by_serial\fR\|(3), \&\fBX509_get0_signature\fR\|(3), \&\fBX509_get_ext_d2i\fR\|(3), \&\fBX509_get_extension_flags\fR\|(3), \&\fBX509_get_pubkey\fR\|(3), \&\fBX509_get_subject_name\fR\|(3), \&\fBX509_NAME_add_entry_by_txt\fR\|(3), \&\fBX509_NAME_ENTRY_get_object\fR\|(3), \&\fBX509_NAME_get_index_by_NID\fR\|(3), \&\fBX509_NAME_print_ex\fR\|(3), \&\fBX509_new\fR\|(3), \&\fBX509_sign\fR\|(3), \&\fBX509V3_get_d2i\fR\|(3), \&\fBX509_verify_cert\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" \&\fBX509_get_version()\fR, \fBX509_REQ_get_version()\fR and \fBX509_CRL_get_version()\fR are functions in OpenSSL 1.1.0, in previous versions they were macros. .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2015\-2016 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.
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