117 lines
4.5 KiB
HTML
Executable File
117 lines
4.5 KiB
HTML
Executable File
<?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>Ed25519</title>
|
|
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
|
|
<link rev="made" href="mailto:root@localhost" />
|
|
</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="#description">DESCRIPTION</a></li>
|
|
<li><a href="#notes">NOTES</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>Ed25519,
|
|
Ed448
|
|
- EVP_PKEY Ed25519 and Ed448 support</p>
|
|
<p>
|
|
</p>
|
|
<hr />
|
|
<h1><a name="description">DESCRIPTION</a></h1>
|
|
<p>The <strong>Ed25519</strong> and <strong>Ed448</strong> EVP_PKEY implementation supports key generation,
|
|
one-shot digest sign and digest verify using PureEdDSA and <strong>Ed25519</strong> or <strong>Ed448</strong>
|
|
(see <a href="http://www.ietf.org/rfc/rfc8032.txt" class="rfc">RFC8032</a>). It has associated private and public key formats compatible with
|
|
draft-ietf-curdle-pkix-04.</p>
|
|
<p>No additional parameters can be set during key generation, one-shot signing or
|
|
verification. In particular, because PureEdDSA is used, a digest must <strong>NOT</strong> be
|
|
specified when signing or verifying.</p>
|
|
<p>
|
|
</p>
|
|
<hr />
|
|
<h1><a name="notes">NOTES</a></h1>
|
|
<p>The PureEdDSA algorithm does not support the streaming mechanism
|
|
of other signature algorithms using, for example, <code>EVP_DigestUpdate()</code>.
|
|
The message to sign or verify must be passed using the one-shot
|
|
<code>EVP_DigestSign()</code> and <code>EVP_DigestVerify()</code> functions.</p>
|
|
<p>When calling <code>EVP_DigestSignInit()</code> or <code>EVP_DigestVerifyInit()</code>, the
|
|
digest <em>type</em> parameter <strong>MUST</strong> be set to NULL.</p>
|
|
<p>Applications wishing to sign certificates (or other structures such as
|
|
CRLs or certificate requests) using Ed25519 or Ed448 can either use X509_sign()
|
|
or X509_sign_ctx() in the usual way.</p>
|
|
<p>A context for the <strong>Ed25519</strong> algorithm can be obtained by calling:</p>
|
|
<pre>
|
|
EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_ED25519, NULL);</pre>
|
|
<p>For the <strong>Ed448</strong> algorithm a context can be obtained by calling:</p>
|
|
<pre>
|
|
EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_ED448, NULL);</pre>
|
|
<p>Ed25519 or Ed448 private keys can be set directly using
|
|
<em>EVP_PKEY_new_raw_private_key(3)</em> or loaded from a PKCS#8 private key file
|
|
using <em>PEM_read_bio_PrivateKey(3)</em> (or similar function). Completely new keys
|
|
can also be generated (see the example below). Setting a private key also sets
|
|
the associated public key.</p>
|
|
<p>Ed25519 or Ed448 public keys can be set directly using
|
|
<em>EVP_PKEY_new_raw_public_key(3)</em> or loaded from a SubjectPublicKeyInfo
|
|
structure in a PEM file using <em>PEM_read_bio_PUBKEY(3)</em> (or similar function).</p>
|
|
<p>Ed25519 and Ed448 can be tested with the <em>openssl-speed(1)</em> application
|
|
since version 1.1.1.
|
|
Valid algorithm names are <strong>ed25519</strong>, <strong>ed448</strong> and <strong>eddsa</strong>. If <strong>eddsa</strong> is
|
|
specified, then both Ed25519 and Ed448 are benchmarked.</p>
|
|
<p>
|
|
</p>
|
|
<hr />
|
|
<h1><a name="examples">EXAMPLES</a></h1>
|
|
<p>This example generates an <strong>ED25519</strong> private key and writes it to standard
|
|
output in PEM format:</p>
|
|
<pre>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/pem.h>
|
|
...
|
|
EVP_PKEY *pkey = NULL;
|
|
EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_ED25519, NULL);
|
|
EVP_PKEY_keygen_init(pctx);
|
|
EVP_PKEY_keygen(pctx, &pkey);
|
|
EVP_PKEY_CTX_free(pctx);
|
|
PEM_write_PrivateKey(stdout, pkey, NULL, NULL, 0, NULL, NULL);</pre>
|
|
<p>
|
|
</p>
|
|
<hr />
|
|
<h1><a name="see_also">SEE ALSO</a></h1>
|
|
<p><em>EVP_PKEY_CTX_new(3)</em>,
|
|
<em>EVP_PKEY_keygen(3)</em>,
|
|
<em>EVP_DigestSignInit(3)</em>,
|
|
<em>EVP_DigestVerifyInit(3)</em>,</p>
|
|
<p>
|
|
</p>
|
|
<hr />
|
|
<h1><a name="copyright">COPYRIGHT</a></h1>
|
|
<p>Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.</p>
|
|
<p>Licensed under the Apache License 2.0 (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>
|