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, X509_ALGOR_copy - 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);
18        int X509_ALGOR_copy(X509_ALGOR *dest, const X509_ALGOR *src);
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DESCRIPTION

21       X509_ALGOR_dup() returns a copy of alg.
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23       X509_ALGOR_set0() sets the algorithm OID of alg to aobj and the
24       associated parameter type to ptype with value pval. If ptype is
25       V_ASN1_UNDEF the parameter is omitted, otherwise ptype and pval have
26       the same meaning as the type and value parameters to ASN1_TYPE_set().
27       All the supplied parameters are used internally so must NOT be freed
28       after this call.
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30       X509_ALGOR_get0() is the inverse of X509_ALGOR_set0(): it returns the
31       algorithm OID in *paobj and the associated parameter in *pptype and
32       *ppval from the AlgorithmIdentifier alg.
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34       X509_ALGOR_set_md() sets the AlgorithmIdentifier alg to appropriate
35       values for the message digest md.
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37       X509_ALGOR_cmp() compares a and b and returns 0 if they have identical
38       encodings and nonzero otherwise.
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40       X509_ALGOR_copy() copies the source values into the dest structs;
41       making a duplicate of each (and free any thing pointed to from within
42       *dest).
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RETURN VALUES

45       X509_ALGOR_dup() returns a valid X509_ALGOR structure or NULL if an
46       error occurred.
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48       X509_ALGOR_set0() and X509_ALGOR_copy() return 1 on success or 0 on
49       error.
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51       X509_ALGOR_get0() and X509_ALGOR_set_md() return no values.
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53       X509_ALGOR_cmp() returns 0 if the two parameters have identical
54       encodings and nonzero otherwise.
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HISTORY

57       The X509_ALGOR_copy() was added in 1.1.1e.
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60       Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
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62       Licensed under the OpenSSL license (the "License").  You may not use
63       this file except in compliance with the License.  You can obtain a copy
64       in the file LICENSE in the source distribution or at
65       <https://www.openssl.org/source/license.html>.
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691.1.1q                            2022-07-07                 X509_ALGOR_DUP(3)
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