205 lines
6.7 KiB
Plaintext
205 lines
6.7 KiB
Plaintext
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.\" ========================================================================
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.\"
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.IX Title "X509_ALGOR_DUP 3ossl"
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.TH X509_ALGOR_DUP 3ossl "2024-01-30" "3.2.1" "OpenSSL"
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.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.\" way too many mistakes in technical documents.
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.if n .ad l
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.nh
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.SH "NAME"
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X509_ALGOR_dup,
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X509_ALGOR_set0, X509_ALGOR_get0,
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X509_ALGOR_set_md, X509_ALGOR_cmp,
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X509_ALGOR_copy \- AlgorithmIdentifier functions
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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.Vb 1
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\& #include <openssl/x509.h>
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\&
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\& X509_ALGOR *X509_ALGOR_dup(X509_ALGOR *alg);
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\& int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval);
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\& void X509_ALGOR_get0(const ASN1_OBJECT **paobj, int *pptype,
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\& const void **ppval, const X509_ALGOR *alg);
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\& void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md);
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\& int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b);
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\& int X509_ALGOR_copy(X509_ALGOR *dest, const X509_ALGOR *src);
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.Ve
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fIX509_ALGOR_dup()\fR returns a copy of \fIalg\fR.
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.PP
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\&\fIX509_ALGOR_set0()\fR sets the algorithm \s-1OID\s0 of \fIalg\fR to \fIaobj\fR and the
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associated parameter type to \fIptype\fR with value \fIpval\fR. If \fIptype\fR is
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\&\fBV_ASN1_UNDEF\fR the parameter is omitted, otherwise \fIptype\fR and \fIpval\fR have
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the same meaning as the \fItype\fR and \fIvalue\fR parameters to \fIASN1_TYPE_set()\fR.
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All the supplied parameters are used internally so must \fB\s-1NOT\s0\fR be freed after
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this call succeeded;
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otherwise ownership remains with the caller and \fIalg\fR remains untouched.
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.PP
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\&\fIX509_ALGOR_get0()\fR is the inverse of \fIX509_ALGOR_set0()\fR: it returns the
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algorithm \s-1OID\s0 in \fI*paobj\fR and the associated parameter in \fI*pptype\fR
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and \fI*ppval\fR from the \fBAlgorithmIdentifier\fR \fIalg\fR.
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.PP
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\&\fIX509_ALGOR_set_md()\fR sets the \fBAlgorithmIdentifier\fR \fIalg\fR to appropriate
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values for the message digest \fImd\fR.
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.PP
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\&\fIX509_ALGOR_cmp()\fR compares \fIa\fR and \fIb\fR and returns 0 if they have identical
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encodings and nonzero otherwise.
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.PP
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\&\fIX509_ALGOR_copy()\fR copies the source values into the dest structs; making
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a duplicate of each (and free any thing pointed to from within *dest).
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fIX509_ALGOR_dup()\fR returns a valid \fBX509_ALGOR\fR structure or \s-1NULL\s0 if an error
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occurred.
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.PP
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\&\fIX509_ALGOR_set0()\fR and \fIX509_ALGOR_copy()\fR return 1 on success or 0 on error.
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.PP
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\&\fIX509_ALGOR_get0()\fR and \fIX509_ALGOR_set_md()\fR return no values.
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.PP
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\&\fIX509_ALGOR_cmp()\fR returns 0 if the two parameters have identical encodings and
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nonzero otherwise.
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.SH "HISTORY"
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.IX Header "HISTORY"
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The \fIX509_ALGOR_copy()\fR was added in 1.1.1e.
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.SH "COPYRIGHT"
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.IX Header "COPYRIGHT"
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Copyright 2002\-2022 The OpenSSL Project Authors. All Rights Reserved.
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.PP
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Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file \s-1LICENSE\s0 in the source distribution or at
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<https://www.openssl.org/source/license.html>.
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