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135 .IX Title "X509_ALGOR_DUP 3"
136 .TH X509_ALGOR_DUP 3 "2021-08-24" "1.1.1l" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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142 X509_ALGOR_dup, X509_ALGOR_set0, X509_ALGOR_get0, X509_ALGOR_set_md, X509_ALGOR_cmp, X509_ALGOR_copy \- AlgorithmIdentifier functions
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/x509.h>
148 \& X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *alg);
149 \& int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval);
150 \& void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
151 \& const void **ppval, const X509_ALGOR *alg);
152 \& void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
153 \& int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
154 \& int X509_ALGOR_copy(X509_ALGOR *dest, const X509_ALGOR *src);
157 .IX Header "DESCRIPTION"
158 \&\fBX509_ALGOR_dup()\fR returns a copy of \fBalg\fR.
160 \&\fBX509_ALGOR_set0()\fR sets the algorithm \s-1OID\s0 of \fBalg\fR to \fBaobj\fR and the
161 associated parameter type to \fBptype\fR with value \fBpval\fR. If \fBptype\fR is
162 \&\fBV_ASN1_UNDEF\fR the parameter is omitted, otherwise \fBptype\fR and \fBpval\fR have
163 the same meaning as the \fBtype\fR and \fBvalue\fR parameters to \fBASN1_TYPE_set()\fR.
164 All the supplied parameters are used internally so must \fB\s-1NOT\s0\fR be freed after
167 \&\fBX509_ALGOR_get0()\fR is the inverse of \fBX509_ALGOR_set0()\fR: it returns the
168 algorithm \s-1OID\s0 in \fB*paobj\fR and the associated parameter in \fB*pptype\fR
169 and \fB*ppval\fR from the \fBAlgorithmIdentifier\fR \fBalg\fR.
171 \&\fBX509_ALGOR_set_md()\fR sets the \fBAlgorithmIdentifier\fR \fBalg\fR to appropriate
172 values for the message digest \fBmd\fR.
174 \&\fBX509_ALGOR_cmp()\fR compares \fBa\fR and \fBb\fR and returns 0 if they have identical
175 encodings and nonzero otherwise.
177 \&\fBX509_ALGOR_copy()\fR copies the source values into the dest structs; making
178 a duplicate of each (and free any thing pointed to from within *dest).
180 .IX Header "RETURN VALUES"
181 \&\fBX509_ALGOR_dup()\fR returns a valid \fBX509_ALGOR\fR structure or \s-1NULL\s0 if an error
184 \&\fBX509_ALGOR_set0()\fR and \fBX509_ALGOR_copy()\fR return 1 on success or 0 on error.
186 \&\fBX509_ALGOR_get0()\fR and \fBX509_ALGOR_set_md()\fR return no values.
188 \&\fBX509_ALGOR_cmp()\fR returns 0 if the two parameters have identical encodings and
192 The \fBX509_ALGOR_copy()\fR was added in 1.1.1e.
194 .IX Header "COPYRIGHT"
195 Copyright 2002\-2020 The OpenSSL Project Authors. All Rights Reserved.
197 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
198 this file except in compliance with the License. You can obtain a copy
199 in the file \s-1LICENSE\s0 in the source distribution or at
200 <https://www.openssl.org/source/license.html>.