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										 |  |  | =pod | 
					
						
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							|  |  |  | =head1 NAME | 
					
						
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							|  |  |  | 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, | 
					
						
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										 |  |  | certificate request or CRL version | 
					
						
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							|  |  |  | =head1 SYNOPSIS | 
					
						
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							|  |  |  |  #include <openssl/x509.h> | 
					
						
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										 |  |  |  long X509_get_version(const X509 *x); | 
					
						
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										 |  |  |  int X509_set_version(X509 *x, long version); | 
					
						
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										 |  |  |  long X509_REQ_get_version(const X509_REQ *req); | 
					
						
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										 |  |  |  int X509_REQ_set_version(X509_REQ *x, long version); | 
					
						
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										 |  |  |  long X509_CRL_get_version(const X509_CRL *crl); | 
					
						
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										 |  |  |  int X509_CRL_set_version(X509_CRL *x, long version); | 
					
						
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							|  |  |  | =head1 DESCRIPTION | 
					
						
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							|  |  |  | X509_get_version() returns the numerical value of the version field of | 
					
						
							|  |  |  | certificate B<x>. Note: this is defined by standards (X.509 et al) to be one | 
					
						
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										 |  |  | less than the certificate version. So a version 3 certificate will return 2 and | 
					
						
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										 |  |  | a version 1 certificate will return 0. | 
					
						
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							|  |  |  | X509_set_version() sets the numerical value of the version field of certificate | 
					
						
							|  |  |  | B<x> to B<version>. | 
					
						
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							|  |  |  | 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. | 
					
						
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							|  |  |  | =head1 NOTES | 
					
						
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							|  |  |  | The version field of certificates, certificate requests and CRLs has a | 
					
						
							|  |  |  | DEFAULT value of B<v1(0)> meaning the field should be omitted for version | 
					
						
							|  |  |  | 1. This is handled transparently by these functions. | 
					
						
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							|  |  |  | =head1 RETURN VALUES | 
					
						
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							|  |  |  | X509_get_version(), X509_REQ_get_version() and X509_CRL_get_version() | 
					
						
							|  |  |  | return the numerical value of the version field. | 
					
						
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							|  |  |  | X509_set_version(), X509_REQ_set_version() and X509_CRL_set_version() | 
					
						
							|  |  |  | return 1 for success and 0 for failure. | 
					
						
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							|  |  |  | =head1 SEE ALSO | 
					
						
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							|  |  |  | L<d2i_X509(3)>, | 
					
						
							|  |  |  | L<ERR_get_error(3)>, | 
					
						
							|  |  |  | L<X509_CRL_get0_by_serial(3)>, | 
					
						
							|  |  |  | L<X509_get0_signature(3)>, | 
					
						
							|  |  |  | L<X509_get_ext_d2i(3)>, | 
					
						
							|  |  |  | L<X509_get_extension_flags(3)>, | 
					
						
							|  |  |  | L<X509_get_pubkey(3)>, | 
					
						
							|  |  |  | L<X509_get_subject_name(3)>, | 
					
						
							|  |  |  | L<X509_NAME_add_entry_by_txt(3)>, | 
					
						
							|  |  |  | L<X509_NAME_ENTRY_get_object(3)>, | 
					
						
							|  |  |  | L<X509_NAME_get_index_by_NID(3)>, | 
					
						
							|  |  |  | L<X509_NAME_print_ex(3)>, | 
					
						
							|  |  |  | L<X509_new(3)>, | 
					
						
							|  |  |  | L<X509_sign(3)>, | 
					
						
							|  |  |  | L<X509V3_get_d2i(3)>, | 
					
						
							|  |  |  | L<X509_verify_cert(3)> | 
					
						
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							|  |  |  | =head1 HISTORY | 
					
						
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							|  |  |  | 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. | 
					
						
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										 |  |  | =head1 COPYRIGHT | 
					
						
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							|  |  |  | Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved. | 
					
						
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										 |  |  | Licensed under the Apache License 2.0 (the "License").  You may not use | 
					
						
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										 |  |  | this file except in compliance with the License.  You can obtain a copy | 
					
						
							|  |  |  | in the file LICENSE in the source distribution or at | 
					
						
							|  |  |  | L<https://www.openssl.org/source/license.html>. | 
					
						
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							|  |  |  | =cut |