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X509_GET_VERSION(3)		    OpenSSL		   X509_GET_VERSION(3)

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>.

1.1.1a				  2018-11-20		   X509_GET_VERSION(3)

NAME | SYNOPSIS | DESCRIPTION | NOTES | RETURN VALUES | SEE ALSO | HISTORY | COPYRIGHT

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