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131 .IX Title "EVP_PKEY_ASN1_GET_COUNT 3"
132 .TH EVP_PKEY_ASN1_GET_COUNT 3 "2018-11-20" "1.1.1a" "OpenSSL"
133 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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138 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
140 .IX Header "SYNOPSIS"
142 \& #include <openssl/evp.h>
144 \& int EVP_PKEY_asn1_get_count(void);
145 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx);
146 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type);
147 \& const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
148 \& const char *str, int len);
149 \& int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *pkey_base_id,
150 \& int *ppkey_flags, const char **pinfo,
151 \& const char **ppem_str,
152 \& const EVP_PKEY_ASN1_METHOD *ameth);
155 .IX Header "DESCRIPTION"
156 \&\fIEVP_PKEY_asn1_count()\fR returns a count of the number of public key
157 \&\s-1ASN.1\s0 methods available: it includes standard methods and any methods
158 added by the application.
160 \&\fIEVP_PKEY_asn1_get0()\fR returns the public key \s-1ASN.1\s0 method \fBidx\fR.
161 The value of \fBidx\fR must be between zero and \fIEVP_PKEY_asn1_get_count()\fR
164 \&\fIEVP_PKEY_asn1_find()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1NID\s0
166 If \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will look up an engine implementing a
167 \&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0 \fBtype\fR and return that instead,
168 and also set \fB*pe\fR to point at the engine that implements it.
170 \&\fIEVP_PKEY_asn1_find_str()\fR looks up the \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR with \s-1PEM\s0
171 type string \fBstr\fR.
172 Just like \fIEVP_PKEY_asn1_find()\fR, if \fBpe\fR isn't \fB\s-1NULL\s0\fR, then it will
173 look up an engine implementing a \fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR for the \s-1NID\s0
174 \&\fBtype\fR and return that instead, and also set \fB*pe\fR to point at the
175 engine that implements it.
177 \&\fIEVP_PKEY_asn1_get0_info()\fR returns the public key \s-1ID,\s0 base public key
178 \&\s-1ID\s0 (both NIDs), any flags, the method description and \s-1PEM\s0 type string
179 associated with the public key \s-1ASN.1\s0 method \fB*ameth\fR.
181 \&\fIEVP_PKEY_asn1_count()\fR, \fIEVP_PKEY_asn1_get0()\fR, \fIEVP_PKEY_asn1_find()\fR and
182 \&\fIEVP_PKEY_asn1_find_str()\fR are not thread safe, but as long as all
183 \&\fB\s-1EVP_PKEY_ASN1_METHOD\s0\fR objects are added before the application gets
184 threaded, using them is safe. See \fIEVP_PKEY_asn1_add0\fR\|(3).
186 .IX Header "RETURN VALUES"
187 \&\fIEVP_PKEY_asn1_count()\fR returns the number of available public key methods.
189 \&\fIEVP_PKEY_asn1_get0()\fR return a public key method or \fB\s-1NULL\s0\fR if \fBidx\fR is
192 \&\fIEVP_PKEY_asn1_get0_info()\fR returns 0 on failure, 1 on success.
194 .IX Header "SEE ALSO"
195 \&\fIEVP_PKEY_asn1_new\fR\|(3), \fIEVP_PKEY_asn1_add0\fR\|(3)
197 .IX Header "COPYRIGHT"
198 Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
200 Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use
201 this file except in compliance with the License. You can obtain a copy
202 in the file \s-1LICENSE\s0 in the source distribution or at
203 <https://www.openssl.org/source/license.html>.