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<?xml version="1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>EVP_PKEY_asn1_get_count</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@hsxx.drive.ne.jp" /> </head> <body style="background-color: white"> <!-- INDEX BEGIN --> <div name="index"> <p><a name="__index__"></a></p> <ul> <li><a href="#name">NAME</a></li> <li><a href="#synopsis">SYNOPSIS</a></li> <li><a href="#description">DESCRIPTION</a></li> <li><a href="#return_values">RETURN VALUES</a></li> <li><a href="#see_also">SEE ALSO</a></li> <li><a href="#copyright">COPYRIGHT</a></li> </ul> <hr name="index" /> </div> <!-- INDEX END --> <p> </p> <hr /> <h1><a name="name">NAME</a></h1> <p>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</p> <p> </p> <hr /> <h1><a name="synopsis">SYNOPSIS</a></h1> <pre> #include <openssl/evp.h></pre> <pre> 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);</pre> <p> </p> <hr /> <h1><a name="description">DESCRIPTION</a></h1> <p>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.</p> <p>EVP_PKEY_asn1_get0() returns the public key ASN.1 method <strong>idx</strong>. The value of <strong>idx</strong> must be between zero and EVP_PKEY_asn1_get_count() - 1.</p> <p>EVP_PKEY_asn1_find() looks up the <strong>EVP_PKEY_ASN1_METHOD</strong> with NID <strong>type</strong>. If <strong>pe</strong> isn't <strong>NULL</strong>, then it will look up an engine implementing a <strong>EVP_PKEY_ASN1_METHOD</strong> for the NID <strong>type</strong> and return that instead, and also set <strong>*pe</strong> to point at the engine that implements it.</p> <p>EVP_PKEY_asn1_find_str() looks up the <strong>EVP_PKEY_ASN1_METHOD</strong> with PEM type string <strong>str</strong>. Just like EVP_PKEY_asn1_find(), if <strong>pe</strong> isn't <strong>NULL</strong>, then it will look up an engine implementing a <strong>EVP_PKEY_ASN1_METHOD</strong> for the NID <strong>type</strong> and return that instead, and also set <strong>*pe</strong> to point at the engine that implements it.</p> <p>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 <strong>*ameth</strong>.</p> <p>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 <strong>EVP_PKEY_ASN1_METHOD</strong> objects are added before the application gets threaded, using them is safe. See <em>EVP_PKEY_asn1_add0(3)</em>.</p> <p> </p> <hr /> <h1><a name="return_values">RETURN VALUES</a></h1> <p>EVP_PKEY_asn1_count() returns the number of available public key methods.</p> <p>EVP_PKEY_asn1_get0() return a public key method or <strong>NULL</strong> if <strong>idx</strong> is out of range.</p> <p>EVP_PKEY_asn1_get0_info() returns 0 on failure, 1 on success.</p> <p> </p> <hr /> <h1><a name="see_also">SEE ALSO</a></h1> <p><em>EVP_PKEY_asn1_new(3)</em>, <em>EVP_PKEY_asn1_add0(3)</em></p> <p> </p> <hr /> <h1><a name="copyright">COPYRIGHT</a></h1> <p>Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.</p> <p>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 <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p> </body> </html>