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Editing: EVP_PKEY_asn1_get_count.3
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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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