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135 .IX Title "EVP_PKEY_ASN1_GET_COUNT 3"
136 .TH EVP_PKEY_ASN1_GET_COUNT 3 "2020-09-22" "1.1.1h" "OpenSSL"
137 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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142 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
144 .IX Header "SYNOPSIS"
146 \& #include <openssl/evp.h>
148 \& int EVP_PKEY_asn1_get_count(void);
149 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
150 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
151 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
152 \& const char *str, int len);
153 \& int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id,
154 \& int *ppkey_flags, const char **pinfo,
155 \& const char **ppem_str,
156 \& const EVP_PKEY_ASN1_METHOD *ameth);
159 .IX Header "DESCRIPTION"
160 \&\fBEVP_PKEY_asn1_count()\fR returns a count of the number of public key
161 \&\s-1ASN.1\s0 methods available: it includes standard methods and any methods
162 added by the application.
164 \&\fBEVP_PKEY_asn1_get0()\fR returns the public key \s-1ASN.1\s0 method \fBidx\fR.
165 The value of \fBidx\fR must be between zero and \fBEVP_PKEY_asn1_get_count()\fR
168 \&\fBEVP_PKEY_asn1_find()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1NID\s0
170 If \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will look up an engine implementing a
171 \&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0 \fBtype\fR and return that instead,
172 and also set \fB*pe\fR to point at the engine that implements it.
174 \&\fBEVP_PKEY_asn1_find_str()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1PEM\s0
175 type string \fBstr\fR.
176 Just like \fBEVP_PKEY_asn1_find()\fR, if \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will
177 look up an engine implementing a \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0
178 \&\fBtype\fR and return that instead, and also set \fB*pe\fR to point at the
179 engine that implements it.
181 \&\fBEVP_PKEY_asn1_get0_info()\fR returns the public key \s-1ID,\s0 base public key
182 \&\s-1ID\s0 (both NIDs), any flags, the method description and \s-1PEM\s0 type string
183 associated with the public key \s-1ASN.1\s0 method \fB*ameth\fR.
185 \&\fBEVP_PKEY_asn1_count()\fR, \fBEVP_PKEY_asn1_get0()\fR, \fBEVP_PKEY_asn1_find()\fR and
186 \&\fBEVP_PKEY_asn1_find_str()\fR are not thread safe, but as long as all
187 \&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR objects are added before the application gets
188 threaded, using them is safe. See \fBEVP_PKEY_asn1_add0\fR\|(3).
190 .IX Header "RETURN VALUES"
191 \&\fBEVP_PKEY_asn1_count()\fR returns the number of available public key methods.
193 \&\fBEVP_PKEY_asn1_get0()\fR return a public key method or \fB\s-1NULL\s0\fR if \fBidx\fR is
196 \&\fBEVP_PKEY_asn1_get0_info()\fR returns 0 on failure, 1 on success.
198 .IX Header "SEE ALSO"
199 \&\fBEVP_PKEY_asn1_new\fR\|(3), \fBEVP_PKEY_asn1_add0\fR\|(3)
201 .IX Header "COPYRIGHT"
202 Copyright 2017\-2019 The OpenSSL Project Authors. All Rights Reserved.
204 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
205 this file except in compliance with the License. You can obtain a copy
206 in the file \s-1LICENSE\s0 in the source distribution or at
207 <https://www.openssl.org/source/license.html>.