EVP_PKEY_ASN1_GET_COUNT - Online Linux Manual PageSection : 3
Updated : 2021-03-26
Source : 1.1.1k
Note : OpenSSL
NAMEEVP_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
SYNOPSIS​ #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);
DESCRIPTION​EVP_PKEY_asn1_count() returns a count of the number of public key ​ASN.1 methods available: it includes standard methods and any methods added by the application. ​EVP_PKEY_asn1_get0() returns the public key ASN.1 method idx. The value of idx must be between zero and EVP_PKEY_asn1_get_count() ​− 1. ​EVP_PKEY_asn1_find() looks up the EVP_PKEY_ASN1_METHOD with NID ​type. If pe isn't NULL, then it will look up an engine implementing a ​EVP_PKEY_ASN1_METHOD for the NID type and return that instead, and also set *pe to point at the engine that implements it. ​EVP_PKEY_asn1_find_str() looks up the EVP_PKEY_ASN1_METHOD with PEM type string str. Just like EVP_PKEY_asn1_find(), if pe isn't NULL, then it will look up an engine implementing a EVP_PKEY_ASN1_METHOD for the NID ​type and return that instead, and also set *pe to point at the engine that implements it. ​EVP_PKEY_asn1_get0_info() returns the public key ID, base public key ​ID (both NIDs), any flags, the method description and PEM type string associated with the public key ASN.1 method *ameth. ​EVP_PKEY_asn1_count(), EVP_PKEY_asn1_get0(), EVP_PKEY_asn1_find() and ​EVP_PKEY_asn1_find_str() are not thread safe, but as long as all ​EVP_PKEY_ASN1_METHOD objects are added before the application gets threaded, using them is safe. See EVP_PKEY_asn1_add0 (3).
RETURN VALUES​EVP_PKEY_asn1_count() returns the number of available public key methods. ​EVP_PKEY_asn1_get0() return a public key method or NULL if idx is out of range. ​EVP_PKEY_asn1_get0_info() returns 0 on failure, 1 on success.
SEE ALSO​EVP_PKEY_asn1_new (3), EVP_PKEY_asn1_add0 (3)
COPYRIGHTCopyright 2017−2019 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the ‟License”). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>. 0
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