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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_set1_RSA</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="#notes">NOTES</a></li> <li><a href="#return_values">RETURN VALUES</a></li> <li><a href="#examples">EXAMPLES</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_set1_RSA, EVP_PKEY_set1_DSA, EVP_PKEY_set1_DH, EVP_PKEY_set1_EC_KEY, EVP_PKEY_get1_RSA, EVP_PKEY_get1_DSA, EVP_PKEY_get1_DH, EVP_PKEY_get1_EC_KEY, EVP_PKEY_get0_RSA, EVP_PKEY_get0_DSA, EVP_PKEY_get0_DH, EVP_PKEY_get0_EC_KEY, EVP_PKEY_assign_RSA, EVP_PKEY_assign_DSA, EVP_PKEY_assign_DH, EVP_PKEY_assign_EC_KEY, EVP_PKEY_assign_POLY1305, EVP_PKEY_assign_SIPHASH, EVP_PKEY_get0_hmac, EVP_PKEY_get0_poly1305, EVP_PKEY_get0_siphash, EVP_PKEY_type, EVP_PKEY_id, EVP_PKEY_base_id, EVP_PKEY_set_alias_type, EVP_PKEY_set1_engine, EVP_PKEY_get0_engine - EVP_PKEY assignment functions</p> <p> </p> <hr /> <h1><a name="synopsis">SYNOPSIS</a></h1> <pre> #include <openssl/evp.h></pre> <pre> int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key); int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key); int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key); int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key);</pre> <pre> RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey); DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey); DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey); EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey);</pre> <pre> const unsigned char *EVP_PKEY_get0_hmac(const EVP_PKEY *pkey, size_t *len); const unsigned char *EVP_PKEY_get0_poly1305(const EVP_PKEY *pkey, size_t *len); const unsigned char *EVP_PKEY_get0_siphash(const EVP_PKEY *pkey, size_t *len); RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey); DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey); DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey); EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey);</pre> <pre> int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key); int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key); int EVP_PKEY_assign_DH(EVP_PKEY *pkey, DH *key); int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key); int EVP_PKEY_assign_POLY1305(EVP_PKEY *pkey, ASN1_OCTET_STRING *key); int EVP_PKEY_assign_SIPHASH(EVP_PKEY *pkey, ASN1_OCTET_STRING *key);</pre> <pre> int EVP_PKEY_id(const EVP_PKEY *pkey); int EVP_PKEY_base_id(const EVP_PKEY *pkey); int EVP_PKEY_type(int type); int EVP_PKEY_set_alias_type(EVP_PKEY *pkey, int type);</pre> <pre> ENGINE *EVP_PKEY_get0_engine(const EVP_PKEY *pkey); int EVP_PKEY_set1_engine(EVP_PKEY *pkey, ENGINE *engine);</pre> <p> </p> <hr /> <h1><a name="description">DESCRIPTION</a></h1> <p>EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and EVP_PKEY_set1_EC_KEY() set the key referenced by <strong>pkey</strong> to <strong>key</strong>.</p> <p>EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and EVP_PKEY_get1_EC_KEY() return the referenced key in <strong>pkey</strong> or <strong>NULL</strong> if the key is not of the correct type.</p> <p>EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305(), EVP_PKEY_get0_siphash(), EVP_PKEY_get0_RSA(), EVP_PKEY_get0_DSA(), EVP_PKEY_get0_DH() and EVP_PKEY_get0_EC_KEY() also return the referenced key in <strong>pkey</strong> or <strong>NULL</strong> if the key is not of the correct type but the reference count of the returned key is <strong>not</strong> incremented and so must not be freed up after use.</p> <p><code>EVP_PKEY_assign_RSA()</code>, <code>EVP_PKEY_assign_DSA()</code>, <code>EVP_PKEY_assign_DH()</code>, <code>EVP_PKEY_assign_EC_KEY()</code>, EVP_PKEY_assign_POLY1305() and <code>EVP_PKEY_assign_SIPHASH()</code> also set the referenced key to <strong>key</strong> however these use the supplied <strong>key</strong> internally and so <strong>key</strong> will be freed when the parent <strong>pkey</strong> is freed.</p> <p><code>EVP_PKEY_base_id()</code> returns the type of <strong>pkey</strong>. For example an RSA key will return <strong>EVP_PKEY_RSA</strong>.</p> <p><code>EVP_PKEY_id()</code> returns the actual OID associated with <strong>pkey</strong>. Historically keys using the same algorithm could use different OIDs. For example an RSA key could use the OIDs corresponding to the NIDs <strong>NID_rsaEncryption</strong> (equivalent to <strong>EVP_PKEY_RSA</strong>) or <strong>NID_rsa</strong> (equivalent to <strong>EVP_PKEY_RSA2</strong>). The use of alternative non-standard OIDs is now rare so <strong>EVP_PKEY_RSA2</strong> et al are not often seen in practice.</p> <p><code>EVP_PKEY_type()</code> returns the underlying type of the NID <strong>type</strong>. For example EVP_PKEY_type(EVP_PKEY_RSA2) will return <strong>EVP_PKEY_RSA</strong>.</p> <p>EVP_PKEY_get0_engine() returns a reference to the ENGINE handling <strong>pkey</strong>.</p> <p>EVP_PKEY_set1_engine() sets the ENGINE handling <strong>pkey</strong> to <strong>engine</strong>. It must be called after the key algorithm and components are set up. If <strong>engine</strong> does not include an <strong>EVP_PKEY_METHOD</strong> for <strong>pkey</strong> an error occurs.</p> <p><code>EVP_PKEY_set_alias_type()</code> allows modifying a EVP_PKEY to use a different set of algorithms than the default. This is currently used to support SM2 keys, which use an identical encoding to ECDSA.</p> <p> </p> <hr /> <h1><a name="notes">NOTES</a></h1> <p>In accordance with the OpenSSL naming convention the key obtained from or assigned to the <strong>pkey</strong> using the <strong>1</strong> functions must be freed as well as <strong>pkey</strong>.</p> <p><code>EVP_PKEY_assign_RSA()</code>, <code>EVP_PKEY_assign_DSA()</code>, <code>EVP_PKEY_assign_DH()</code>, <code>EVP_PKEY_assign_EC_KEY()</code>, EVP_PKEY_assign_POLY1305() and <code>EVP_PKEY_assign_SIPHASH()</code> are implemented as macros.</p> <p>Most applications wishing to know a key type will simply call <code>EVP_PKEY_base_id()</code> and will not care about the actual type: which will be identical in almost all cases.</p> <p>Previous versions of this document suggested using EVP_PKEY_type(pkey->type) to determine the type of a key. Since <strong>EVP_PKEY</strong> is now opaque this is no longer possible: the equivalent is EVP_PKEY_base_id(pkey).</p> <p>EVP_PKEY_set1_engine() is typically used by an ENGINE returning an HSM key as part of its routine to load a private key.</p> <p> </p> <hr /> <h1><a name="return_values">RETURN VALUES</a></h1> <p>EVP_PKEY_set1_RSA(), EVP_PKEY_set1_DSA(), EVP_PKEY_set1_DH() and EVP_PKEY_set1_EC_KEY() return 1 for success or 0 for failure.</p> <p>EVP_PKEY_get1_RSA(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_DH() and EVP_PKEY_get1_EC_KEY() return the referenced key or <strong>NULL</strong> if an error occurred.</p> <p><code>EVP_PKEY_assign_RSA()</code>, <code>EVP_PKEY_assign_DSA()</code>, <code>EVP_PKEY_assign_DH()</code>, <code>EVP_PKEY_assign_EC_KEY()</code>, EVP_PKEY_assign_POLY1305() and <code>EVP_PKEY_assign_SIPHASH()</code> return 1 for success and 0 for failure.</p> <p><code>EVP_PKEY_base_id()</code>, <code>EVP_PKEY_id()</code> and <code>EVP_PKEY_type()</code> return a key type or <strong>NID_undef</strong> (equivalently <strong>EVP_PKEY_NONE</strong>) on error.</p> <p>EVP_PKEY_set1_engine() returns 1 for success and 0 for failure.</p> <p><code>EVP_PKEY_set_alias_type()</code> returns 1 for success and 0 for error.</p> <p> </p> <hr /> <h1><a name="examples">EXAMPLES</a></h1> <p>After loading an ECC key, it is possible to convert it to using SM2 algorithms with EVP_PKEY_set_alias_type:</p> <pre> EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2);</pre> <p> </p> <hr /> <h1><a name="see_also">SEE ALSO</a></h1> <p><em>EVP_PKEY_new(3)</em></p> <p> </p> <hr /> <h1><a name="copyright">COPYRIGHT</a></h1> <p>Copyright 2002-2019 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>