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Düzenlenen Dosya: EVP_PKEY_asn1_find_str.3ssl

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.\"
.IX Title "EVP_PKEY_ASN1_GET_COUNT 3"
.TH EVP_PKEY_ASN1_GET_COUNT 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
EVP_PKEY_asn1_find, EVP_PKEY_asn1_find_str, EVP_PKEY_asn1_get_count, EVP_PKEY_asn1_get0, EVP_PKEY_asn1_get0_info \&\- enumerate public key ASN.1 methods
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/evp.h>
\&
\& int EVP_PKEY_asn1_get_count(void);
\& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
\& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
\& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
\&                                                    const char *str, int len);
\& int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id,
\&                             int *ppkey_flags, const char **pinfo,
\&                             const char **ppem_str,
\&                             const EVP_PKEY_ASN1_METHOD *ameth);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBEVP_PKEY_asn1_count()\fR returns a count of the number of public key
\&\s-1ASN.1\s0 methods available: it includes standard methods and any methods
added by the application.
.PP
\&\fBEVP_PKEY_asn1_get0()\fR returns the public key \s-1ASN.1\s0 method \fBidx\fR.
The value of \fBidx\fR must be between zero and \fBEVP_PKEY_asn1_get_count()\fR
\&\- 1.
.PP
\&\fBEVP_PKEY_asn1_find()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1NID\s0
\&\fBtype\fR.
If \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will look up an engine implementing a
\&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0 \fBtype\fR and return that instead,
and also set \fB*pe\fR to point at the engine that implements it.
.PP
\&\fBEVP_PKEY_asn1_find_str()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1PEM\s0
type string \fBstr\fR.
Just like \fBEVP_PKEY_asn1_find()\fR, if \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will
look up an engine implementing a \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0
\&\fBtype\fR and return that instead, and also set \fB*pe\fR to point at the
engine that implements it.
.PP
\&\fBEVP_PKEY_asn1_get0_info()\fR returns the public key \s-1ID,\s0 base public key
\&\s-1ID\s0 (both NIDs), any flags, the method description and \s-1PEM\s0 type string
associated with the public key \s-1ASN.1\s0 method \fB*ameth\fR.
.PP
\&\fBEVP_PKEY_asn1_count()\fR, \fBEVP_PKEY_asn1_get0()\fR, \fBEVP_PKEY_asn1_find()\fR and
\&\fBEVP_PKEY_asn1_find_str()\fR are not thread safe, but as long as all
\&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR objects are added before the application gets
threaded, using them is safe.  See \fBEVP_PKEY_asn1_add0\fR\|(3).
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBEVP_PKEY_asn1_count()\fR returns the number of available public key methods.
.PP
\&\fBEVP_PKEY_asn1_get0()\fR return a public key method or \fB\s-1NULL\s0\fR if \fBidx\fR is
out of range.
.PP
\&\fBEVP_PKEY_asn1_get0_info()\fR returns 0 on failure, 1 on success.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBEVP_PKEY_asn1_new\fR\|(3), \fBEVP_PKEY_asn1_add0\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2017\-2019 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

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