1X509_ALGOR_DUP(3)                   OpenSSL                  X509_ALGOR_DUP(3)
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NAME

6       X509_ALGOR_dup, X509_ALGOR_set0, X509_ALGOR_get0, X509_ALGOR_set_md,
7       X509_ALGOR_cmp - AlgorithmIdentifier functions
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SYNOPSIS

10        #include <openssl/x509.h>
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12        X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *alg);
13        int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval);
14        void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
15                             const void **ppval, const X509_ALGOR *alg);
16        void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
17        int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
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DESCRIPTION

20       X509_ALGOR_dup() returns a copy of alg.
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22       X509_ALGOR_set0() sets the algorithm OID of alg to aobj and the
23       associated parameter type to ptype with value pval. If ptype is
24       V_ASN1_UNDEF the parameter is omitted, otherwise ptype and pval have
25       the same meaning as the type and value parameters to ASN1_TYPE_set().
26       All the supplied parameters are used internally so must NOT be freed
27       after this call.
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29       X509_ALGOR_get0() is the inverse of X509_ALGOR_set0(): it returns the
30       algorithm OID in *paobj and the associated parameter in *pptype and
31       *ppval from the AlgorithmIdentifier alg.
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33       X509_ALGOR_set_md() sets the AlgorithmIdentifier alg to appropriate
34       values for the message digest md.
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36       X509_ALGOR_cmp() compares a and b and returns 0 if they have identical
37       encodings and non-zero otherwise.
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RETURN VALUES

40       X509_ALGOR_dup() returns a valid X509_ALGOR structure or NULL if an
41       error occurred.
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43       X509_ALGOR_set0() returns 1 on success or 0 on error.
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45       X509_ALGOR_get0() and X509_ALGOR_set_md() return no values.
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47       X509_ALGOR_cmp() returns 0 if the two parameters have identical
48       encodings and non-zero otherwise.
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51       Copyright 2002-2018 The OpenSSL Project Authors. All Rights Reserved.
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53       Licensed under the OpenSSL license (the "License").  You may not use
54       this file except in compliance with the License.  You can obtain a copy
55       in the file LICENSE in the source distribution or at
56       <https://www.openssl.org/source/license.html>.
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601.1.1                             2018-09-11                 X509_ALGOR_DUP(3)
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