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RSA_sign_ASN1_OCTET_STRING.html
<?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>RSA_sign_ASN1_OCTET_STRING</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@localhost" /> </head> <body> <ul id="index"> <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="#BUGS">BUGS</a></li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> </ul> <h1 id="NAME">NAME</h1> <p>RSA_sign_ASN1_OCTET_STRING, RSA_verify_ASN1_OCTET_STRING - RSA signatures</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #include <openssl/rsa.h> int RSA_sign_ASN1_OCTET_STRING(int dummy, unsigned char *m, unsigned int m_len, unsigned char *sigret, unsigned int *siglen, RSA *rsa); int RSA_verify_ASN1_OCTET_STRING(int dummy, unsigned char *m, unsigned int m_len, unsigned char *sigbuf, unsigned int siglen, RSA *rsa);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>RSA_sign_ASN1_OCTET_STRING() signs the octet string <b>m</b> of size <b>m_len</b> using the private key <b>rsa</b> represented in DER using PKCS #1 padding. It stores the signature in <b>sigret</b> and the signature size in <b>siglen</b>. <b>sigret</b> must point to <b>RSA_size(rsa)</b> bytes of memory.</p> <p><b>dummy</b> is ignored.</p> <p>The random number generator must be seeded when calling RSA_sign_ASN1_OCTET_STRING(). If the automatic seeding or reseeding of the OpenSSL CSPRNG fails due to external circumstances (see <a href="../man7/RAND.html">RAND(7)</a>), the operation will fail.</p> <p>RSA_verify_ASN1_OCTET_STRING() verifies that the signature <b>sigbuf</b> of size <b>siglen</b> is the DER representation of a given octet string <b>m</b> of size <b>m_len</b>. <b>dummy</b> is ignored. <b>rsa</b> is the signer's public key.</p> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>RSA_sign_ASN1_OCTET_STRING() returns 1 on success, 0 otherwise. RSA_verify_ASN1_OCTET_STRING() returns 1 on successful verification, 0 otherwise.</p> <p>The error codes can be obtained by <a href="../man3/ERR_get_error.html">ERR_get_error(3)</a>.</p> <h1 id="BUGS">BUGS</h1> <p>These functions serve no recognizable purpose.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man3/ERR_get_error.html">ERR_get_error(3)</a>, <a href="../man3/RAND_bytes.html">RAND_bytes(3)</a>, <a href="../man3/RSA_sign.html">RSA_sign(3)</a>, <a href="../man3/RSA_verify.html">RSA_verify(3)</a>, <a href="../man7/RAND.html">RAND(7)</a></p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2000-2019 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>
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