forked from premiere/premiere-libtorrent
495 lines
24 KiB
HTML
495 lines
24 KiB
HTML
<?xml version="1.0" encoding="utf-8" ?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="generator" content="Docutils 0.11: http://docutils.sourceforge.net/" />
|
|
<title>BitTorrent extension for arbitrary DHT store</title>
|
|
<meta name="author" content="Arvid Norberg, arvid@rasterbar.com" />
|
|
<link rel="stylesheet" type="text/css" href="../../css/base.css" />
|
|
<link rel="stylesheet" type="text/css" href="../../css/rst.css" />
|
|
<script type="text/javascript">
|
|
/* <![CDATA[ */
|
|
(function() {
|
|
var s = document.createElement('script'), t = document.getElementsByTagName('script')[0];
|
|
s.type = 'text/javascript';
|
|
s.async = true;
|
|
s.src = 'http://api.flattr.com/js/0.6/load.js?mode=auto';
|
|
t.parentNode.insertBefore(s, t);
|
|
})();
|
|
/* ]]> */
|
|
</script>
|
|
<link rel="stylesheet" href="style.css" type="text/css" />
|
|
<style type="text/css">
|
|
/* Hides from IE-mac \*/
|
|
* html pre { height: 1%; }
|
|
/* End hide from IE-mac */
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div class="document" id="bittorrent-extension-for-arbitrary-dht-store">
|
|
<div id="container">
|
|
<div id="headerNav">
|
|
<ul>
|
|
<li class="first"><a href="/">Home</a></li>
|
|
<li><a href="../../products.html">Products</a></li>
|
|
<li><a href="../../contact.html">Contact</a></li>
|
|
</ul>
|
|
</div>
|
|
<div id="header">
|
|
<div id="orange"></div>
|
|
<div id="logo"></div>
|
|
</div>
|
|
<div id="main">
|
|
<h1 class="title">BitTorrent extension for arbitrary DHT store</h1>
|
|
<table class="docinfo" frame="void" rules="none">
|
|
<col class="docinfo-name" />
|
|
<col class="docinfo-content" />
|
|
<tbody valign="top">
|
|
<tr><th class="docinfo-name">Author:</th>
|
|
<td>Arvid Norberg, <a class="last reference external" href="mailto:arvid@rasterbar.com">arvid@rasterbar.com</a></td></tr>
|
|
<tr><th class="docinfo-name">Version:</th>
|
|
<td>1.0.0</td></tr>
|
|
</tbody>
|
|
</table>
|
|
<div class="contents topic" id="table-of-contents">
|
|
<p class="topic-title first">Table of contents</p>
|
|
<ul class="simple">
|
|
<li><a class="reference internal" href="#terminology" id="id3">terminology</a></li>
|
|
<li><a class="reference internal" href="#messages" id="id4">messages</a><ul>
|
|
<li><a class="reference internal" href="#put-message" id="id5">put message</a></li>
|
|
<li><a class="reference internal" href="#get-message" id="id6">get message</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a class="reference internal" href="#mutable-items" id="id7">mutable items</a><ul>
|
|
<li><a class="reference internal" href="#id1" id="id8">put message</a></li>
|
|
<li><a class="reference internal" href="#id2" id="id9">get message</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a class="reference internal" href="#signature-verification" id="id10">signature verification</a></li>
|
|
<li><a class="reference internal" href="#expiration" id="id11">expiration</a></li>
|
|
<li><a class="reference internal" href="#test-vectors" id="id12">test vectors</a><ul>
|
|
<li><a class="reference internal" href="#test-1-mutable" id="id13">test 1 (mutable)</a></li>
|
|
<li><a class="reference internal" href="#test-2-mutable-with-salt" id="id14">test 2 (mutable with salt)</a></li>
|
|
<li><a class="reference internal" href="#test-3-immutable" id="id15">test 3 (immutable)</a></li>
|
|
</ul>
|
|
</li>
|
|
<li><a class="reference internal" href="#resources" id="id16">resources</a></li>
|
|
</ul>
|
|
</div>
|
|
<p>This is a proposal for an extension to the BitTorrent DHT to allow
|
|
storing and retrieving of arbitrary data.</p>
|
|
<p>It supports both storing <em>immutable</em> items, where the key is
|
|
the SHA-1 hash of the data itself, and <em>mutable</em> items, where
|
|
the key is the public key of the key pair used to sign the data.</p>
|
|
<p>There are two new proposed messages, <tt class="docutils literal">put</tt> and <tt class="docutils literal">get</tt>.</p>
|
|
<div class="section" id="terminology">
|
|
<h1>terminology</h1>
|
|
<p>In this document, a <em>storage node</em> refers to the node in the DHT to which
|
|
an item is being announced and stored on. A <em>requesting node</em> refers to
|
|
a node which makes look-ups in the DHT to find the storage nodes, to
|
|
request items from them, and possibly re-announce those items to keep them
|
|
alive.</p>
|
|
</div>
|
|
<div class="section" id="messages">
|
|
<h1>messages</h1>
|
|
<p>The proposed new messages <tt class="docutils literal">get</tt> and <tt class="docutils literal">put</tt> are similar to the existing
|
|
<tt class="docutils literal">get_peers</tt> and <tt class="docutils literal">announce_peer</tt>.</p>
|
|
<p>Responses to <tt class="docutils literal">get</tt> should always include <tt class="docutils literal">nodes</tt> and <tt class="docutils literal">nodes6</tt>. Those
|
|
fields have the same semantics as in its <tt class="docutils literal">get_peers</tt> response. It should also
|
|
include a write token, <tt class="docutils literal">token</tt>, with the same semantics as int <tt class="docutils literal">get_peers</tt>.
|
|
The write token MAY be tied specifically to the key which <tt class="docutils literal">get</tt> requested.
|
|
i.e. the <tt class="docutils literal">token</tt> can only be used to store values under that one key. It may
|
|
also be tied to the node ID and IP address of the requesting node.</p>
|
|
<p>The <tt class="docutils literal">id</tt> field in these messages has the same semantics as the standard DHT
|
|
messages, i.e. the node ID of the node sending the message, to maintain the
|
|
structure of the DHT network.</p>
|
|
<p>The <tt class="docutils literal">token</tt> field also has the same semantics as the standard DHT message
|
|
<tt class="docutils literal">get_peers</tt> and <tt class="docutils literal">announce_peer</tt>, when requesting an item and to write an
|
|
item respectively.</p>
|
|
<p>The <tt class="docutils literal">k</tt> field is the 32 byte ed25519 public key, which the signature can be
|
|
authenticated with. When looking up a mutable item, the <tt class="docutils literal">target</tt> field MUST be
|
|
the SHA-1 hash of this key concatenated with the <tt class="docutils literal">salt</tt>, if present.</p>
|
|
<p>The distinction between storing mutable and immutable items is the inclusion of
|
|
a public key, a sequence number, signature and an optional salt (<tt class="docutils literal">k</tt>, <tt class="docutils literal">seq</tt>,
|
|
<tt class="docutils literal">sig</tt> and <tt class="docutils literal">salt</tt>).</p>
|
|
<p><tt class="docutils literal">get</tt> requests for mutable items and immutable items cannot be distinguished
|
|
from eachother. An implementation can either store mutable and immutable items
|
|
in the same hash table internally, or in separate ones and potentially do two
|
|
lookups for <tt class="docutils literal">get</tt> requests.</p>
|
|
<p>The <tt class="docutils literal">v</tt> field is the <em>value</em> to be stored. It is allowed to be any bencoded
|
|
type (list, dict, string or integer). When it's being hashed (for verifying its
|
|
signature or to calculate its key), its flattened, bencoded, form is used. It is
|
|
important to use the verbatim bencoded representation as it appeared in the
|
|
message. decoding and then re-encoding bencoded structures is not necessarily an
|
|
identity operation.</p>
|
|
<p>Storing nodes MAY reject <tt class="docutils literal">put</tt> requests where the bencoded form of <tt class="docutils literal">v</tt> is
|
|
longer than 1000 bytes. In other words, it's not safe to assume storing more
|
|
than 1000 bytes will succeed.</p>
|
|
<p>immutable items ---------------</p>
|
|
<p>Immutable items are stored under their SHA-1 hash, and since they cannot be
|
|
modified, there is no need to authenticate the origin of them. This makes
|
|
immutable items simple.</p>
|
|
<p>A node making a lookup SHOULD verify the data it receives from the network, to
|
|
verify that its hash matches the target that was looked up.</p>
|
|
<div class="section" id="put-message">
|
|
<h2>put message</h2>
|
|
<p>Request:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"a":
|
|
{
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"v": <em><any bencoded type, whose encoded size <= 1000></em>
|
|
},
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "q",
|
|
"q": "put"
|
|
}
|
|
</pre>
|
|
<p>Response:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"r": { "id": <em><20 byte id of sending node (string)></em> },
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "r",
|
|
}
|
|
</pre>
|
|
</div>
|
|
<div class="section" id="get-message">
|
|
<h2>get message</h2>
|
|
<p>Request:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"a":
|
|
{
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"target": <em><SHA-1 hash of item (string)></em>,
|
|
},
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "q",
|
|
"q": "get"
|
|
}
|
|
</pre>
|
|
<p>Response:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"r":
|
|
{
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"token": <em><write token (string)></em>,
|
|
"v": <em><any bencoded type whose SHA-1 hash matches 'target'></em>,
|
|
"nodes": <em><IPv4 nodes close to 'target'></em>,
|
|
"nodes6": <em><IPv6 nodes close to 'target'></em>
|
|
},
|
|
"t": <em><transaction-id></em>,
|
|
"y": "r",
|
|
}
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="mutable-items">
|
|
<h1>mutable items</h1>
|
|
<p>Mutable items can be updated, without changing their DHT keys. To authenticate
|
|
that only the original publisher can update an item, it is signed by a private
|
|
key generated by the original publisher. The target ID mutable items are stored
|
|
under is the SHA-1 hash of the public key (as it appears in the <tt class="docutils literal">put</tt>
|
|
message).</p>
|
|
<p>In order to avoid a malicious node to overwrite the list head with an old
|
|
version, the sequence number <tt class="docutils literal">seq</tt> must be monotonically increasing for each
|
|
update, and a node hosting the list node MUST not downgrade a list head from a
|
|
higher sequence number to a lower one, only upgrade. The sequence number SHOULD
|
|
not exceed <tt class="docutils literal">MAX_INT64</tt>, (i.e. <tt class="docutils literal">0x7fffffffffffffff</tt>. A client MAY reject any
|
|
message with a sequence number exceeding this. A client MAY also reject any
|
|
message with a negative sequence number.</p>
|
|
<p>The signature is a 64 byte ed25519 signature of the bencoded sequence number
|
|
concatenated with the <tt class="docutils literal">v</tt> key. e.g. something like this:</p>
|
|
<pre class="literal-block">
|
|
3:seqi4e1:v12:Hello world!
|
|
</pre>
|
|
<p>If the <tt class="docutils literal">salt</tt> key is present and non-empty, the salt string must be included
|
|
in what's signed. Note that if <tt class="docutils literal">salt</tt> is specified and an empty string, it is
|
|
as if it was not specified and nothing in addition to the sequence number and
|
|
the data is signed. The salt string may not be longer than 64 bytes.</p>
|
|
<p>When a salt is included in what is signed, the key <tt class="docutils literal">salt</tt> with the value of
|
|
the key is prepended in its bencoded form. For example, if <tt class="docutils literal">salt</tt> is "foobar",
|
|
the buffer to be signed is:</p>
|
|
<pre class="literal-block">
|
|
4:salt6:foobar3:seqi4e1:v12:Hello world!
|
|
</pre>
|
|
<div class="section" id="id1">
|
|
<h2>put message</h2>
|
|
<p>Request:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"a":
|
|
{
|
|
"cas": <em><optional 20 byte hash (string)></em>,
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"k": <em><ed25519 public key (32 bytes string)></em>,
|
|
"salt": <em><optional salt to be appended to "k" when hashing (string)></em>
|
|
"seq": <em><monotonically increasing sequence number (integer)></em>,
|
|
"sig": <em><ed25519 signature (64 bytes string)></em>,
|
|
"token": <em><write-token (string)></em>,
|
|
"v": <em><any bencoded type, whose encoded size < 1000></em>
|
|
},
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "q",
|
|
"q": "put"
|
|
}
|
|
</pre>
|
|
<p>Storing nodes receiving a <tt class="docutils literal">put</tt> request where <tt class="docutils literal">seq</tt> is lower than or equal
|
|
to what's already stored on the node, MUST reject the request. If the sequence
|
|
number is equal, and the value is also the same, the node SHOULD reset its
|
|
timeout counter.</p>
|
|
<p>If the sequence number in the <tt class="docutils literal">put</tt> message is lower than the sequence number
|
|
associated with the currently stored value, the storing node MAY return an error
|
|
message with code 302 (see error codes below).</p>
|
|
<p>Note that this request does not contain a target hash. The target hash under
|
|
which this blob is stored is implied by the <tt class="docutils literal">k</tt> argument. The key is the SHA-1
|
|
hash of the key (<tt class="docutils literal">k</tt>).</p>
|
|
<p>In order to support a single key being used to store separate items in the DHT,
|
|
an optional <tt class="docutils literal">salt</tt> can be specified in the <tt class="docutils literal">put</tt> request of mutable items.
|
|
If the salt entry is not present, it can be assumed to be an empty string, and
|
|
its semantics should be identical as specifying a salt key with an empty string.
|
|
The salt can be any binary string (but probably most conveniently a hash of
|
|
something). This string is appended to the key, as specified in the <tt class="docutils literal">k</tt> field,
|
|
when calculating the key to store the blob under (i.e. the key <tt class="docutils literal">get</tt> requests
|
|
specify to retrieve this data).</p>
|
|
<p>This lets a single entity, with a single key, publish any number of unrelated
|
|
items, with a single key that readers can verify. This is useful if the
|
|
publisher doesn't know ahead of time how many different items are to be
|
|
published. It can distribute a single public key for users to authenticate the
|
|
published blobs.</p>
|
|
<p>Note that the salt is not returned in the response to a <tt class="docutils literal">get</tt> request. This
|
|
is intentional. When issuing a <tt class="docutils literal">get</tt> request for an item is expected to
|
|
know what the salt is (because it is part of what the target ID that is being
|
|
looked up is derived from). There is no need to repeat it back for bystanders
|
|
to see.</p>
|
|
<p>The <tt class="docutils literal">cas</tt> field is optional. If present it is interpreted as the sha-1 hash of
|
|
the sequence number, <tt class="docutils literal">v</tt> field and possibly the <tt class="docutils literal">salt</tt> field, that is
|
|
expected to be replaced. The buffer to hash is the same as the one signed when
|
|
storing. <tt class="docutils literal">cas</tt> is short for <em>compare and swap</em>, it has similar semantics as
|
|
CAS CPU instructions. If specified as part of the put command, and the current
|
|
value stored under the public key differs from the expected value, the store
|
|
fails. The <tt class="docutils literal">cas</tt> field only applies to mutable puts. If there is no current
|
|
value, the <tt class="docutils literal">cas</tt> field SHOULD be ignored. A put operation should not be
|
|
prevented based on the <tt class="docutils literal">cas</tt> field if no value is currently present.</p>
|
|
<p>Response:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"r": { "id": <em><20 byte id of sending node (string)></em> },
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "r",
|
|
}
|
|
</pre>
|
|
<p>If the store fails for any reason an error message is returned instead of the
|
|
message template above, i.e. one where "y" is "e" and "e" is a tuple of
|
|
[error-code, message]). Failures include where the <tt class="docutils literal">cas</tt> hash mismatches and
|
|
the sequence number is outdated.</p>
|
|
<p>If no <tt class="docutils literal">cas</tt> field is included in the <tt class="docutils literal">put</tt> message, the value of the current
|
|
<tt class="docutils literal">v</tt> field should be disregarded when determining whether or not to save the
|
|
item. (However, the signature, sequence number obviously still should).</p>
|
|
<p>The error message (as specified by <a class="reference external" href="http://www.bittorrent.org/beps/bep_0005.html">BEP5</a>) looks like this:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"e": [ <em><error-code (integer)></em>, <em><error-string (string)></em> ],
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "e",
|
|
}
|
|
</pre>
|
|
<p>In addition to the error codes defined in <a class="reference external" href="http://www.bittorrent.org/beps/bep_0005.html">BEP5</a>, this specification defines
|
|
some additional error codes.</p>
|
|
<table border="1" class="docutils">
|
|
<colgroup>
|
|
<col width="29%" />
|
|
<col width="71%" />
|
|
</colgroup>
|
|
<thead valign="bottom">
|
|
<tr><th class="head">error-code</th>
|
|
<th class="head">description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody valign="top">
|
|
<tr><td>205</td>
|
|
<td>message (i.e. <tt class="docutils literal">v</tt> field)
|
|
too big.</td>
|
|
</tr>
|
|
<tr><td>206</td>
|
|
<td>invalid signature</td>
|
|
</tr>
|
|
<tr><td>207</td>
|
|
<td>salt (i.e. <tt class="docutils literal">salt</tt> field)
|
|
too big.</td>
|
|
</tr>
|
|
<tr><td>301</td>
|
|
<td>the CAS hash mismatched,
|
|
re-read value and try
|
|
again.</td>
|
|
</tr>
|
|
<tr><td>302</td>
|
|
<td>sequence number less than
|
|
current.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>An implementation MUST emit 301 errors if the cas-hash mismatches. This is a
|
|
critical feature in synchronization of multiple agents sharing an immutable
|
|
item.</p>
|
|
</div>
|
|
<div class="section" id="id2">
|
|
<h2>get message</h2>
|
|
<p>Request:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"a":
|
|
{
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"target:" <em><20 byte SHA-1 hash of public key and salt (string)></em>
|
|
},
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "q",
|
|
"q": "get"
|
|
}
|
|
</pre>
|
|
<p>Response:</p>
|
|
<pre class="literal-block">
|
|
{
|
|
"r":
|
|
{
|
|
"id": <em><20 byte id of sending node (string)></em>,
|
|
"k": <em><ed25519 public key (32 bytes string)></em>,
|
|
"nodes": <em><IPv4 nodes close to 'target'></em>,
|
|
"nodes6": <em><IPv6 nodes close to 'target'></em>,
|
|
"seq": <em><monotonically increasing sequence number (integer)></em>,
|
|
"sig": <em><ed25519 signature (64 bytes string)></em>,
|
|
"token": <em><write-token (string)></em>,
|
|
"v": <em><any bencoded type, whose encoded size <= 1000></em>
|
|
},
|
|
"t": <em><transaction-id (string)></em>,
|
|
"y": "r",
|
|
}
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="signature-verification">
|
|
<h1>signature verification</h1>
|
|
<p>In order to make it maximally difficult to attack the bencoding parser, signing
|
|
and verification of the value and sequence number should be done as follows:</p>
|
|
<ol class="arabic simple">
|
|
<li>encode value and sequence number separately</li>
|
|
<li>concatenate ("4:salt" <em>length-of-salt</em> ":" <em>salt</em>) "3:seqi" <em>seq</em>
|
|
"e1:v" <em>len</em> ":" and the encoded value.
|
|
sequence number 1 of value "Hello World!" would be converted to:
|
|
"3:seqi1e1:v12:Hello World!". In this way it is not possible to convince a
|
|
node that part of the length is actually part of the sequence number even if
|
|
the parser contains certain bugs. Furthermore it is not possible to have a
|
|
verification failure if a bencoding serializer alters the order of entries in
|
|
the dictionary. The salt is in parenthesis because it is optional. It is only
|
|
prepended if a non-empty salt is specified in the <tt class="docutils literal">put</tt> request.</li>
|
|
<li>sign or verify the concatenated string</li>
|
|
</ol>
|
|
<p>On the storage node, the signature MUST be verified before accepting the store
|
|
command. The data MUST be stored under the SHA-1 hash of the public key (as it
|
|
appears in the bencoded dict).</p>
|
|
<p>On the requesting nodes, the key they get back from a <tt class="docutils literal">get</tt> request MUST be
|
|
verified to hash to the target ID the lookup was made for, as well as verifying
|
|
the signature. If any of these fail, the response SHOULD be considered invalid.</p>
|
|
</div>
|
|
<div class="section" id="expiration">
|
|
<h1>expiration</h1>
|
|
<p>Without re-announcement, these items MAY expire in 2 hours. In order
|
|
to keep items alive, they SHOULD be re-announced once an hour.</p>
|
|
<p>Any node that's interested in keeping a blob in the DHT alive may announce it.
|
|
It would simply repeat the signature for a mutable put without having the
|
|
private key.</p>
|
|
</div>
|
|
<div class="section" id="test-vectors">
|
|
<h1>test vectors</h1>
|
|
<div class="section" id="test-1-mutable">
|
|
<h2>test 1 (mutable)</h2>
|
|
<p>value:</p>
|
|
<pre class="literal-block">
|
|
12:Hello World!
|
|
</pre>
|
|
<p>buffer being signed:</p>
|
|
<pre class="literal-block">
|
|
3:seqi1e1:v12:Hello World!
|
|
</pre>
|
|
<p>public key:</p>
|
|
<pre class="literal-block">
|
|
77ff84905a91936367c01360803104f92432fcd904a43511876df5cdf3e7e548
|
|
</pre>
|
|
<p>private key:</p>
|
|
<pre class="literal-block">
|
|
e06d3183d14159228433ed599221b80bd0a5ce8352e4bdf0262f76786ef1c74d
|
|
b7e7a9fea2c0eb269d61e3b38e450a22e754941ac78479d6c54e1faf6037881d
|
|
</pre>
|
|
<p><strong>target ID</strong>:</p>
|
|
<pre class="literal-block">
|
|
4a533d47ec9c7d95b1ad75f576cffc641853b750
|
|
</pre>
|
|
<p><strong>signature</strong>:</p>
|
|
<pre class="literal-block">
|
|
305ac8aeb6c9c151fa120f120ea2cfb923564e11552d06a5d856091e5e853cff
|
|
1260d3f39e4999684aa92eb73ffd136e6f4f3ecbfda0ce53a1608ecd7ae21f01
|
|
</pre>
|
|
</div>
|
|
<div class="section" id="test-2-mutable-with-salt">
|
|
<h2>test 2 (mutable with salt)</h2>
|
|
<p>value:</p>
|
|
<pre class="literal-block">
|
|
12:Hello World!
|
|
</pre>
|
|
<p>salt:</p>
|
|
<pre class="literal-block">
|
|
foobar
|
|
</pre>
|
|
<p>buffer being signed:</p>
|
|
<pre class="literal-block">
|
|
4:salt6:foobar3:seqi1e1:v12:Hello World!
|
|
</pre>
|
|
<p>public key:</p>
|
|
<pre class="literal-block">
|
|
77ff84905a91936367c01360803104f92432fcd904a43511876df5cdf3e7e548
|
|
</pre>
|
|
<p>private key:</p>
|
|
<pre class="literal-block">
|
|
e06d3183d14159228433ed599221b80bd0a5ce8352e4bdf0262f76786ef1c74d
|
|
b7e7a9fea2c0eb269d61e3b38e450a22e754941ac78479d6c54e1faf6037881d
|
|
</pre>
|
|
<p><strong>target ID</strong>:</p>
|
|
<pre class="literal-block">
|
|
411eba73b6f087ca51a3795d9c8c938d365e32c1
|
|
</pre>
|
|
<p><strong>signature</strong>:</p>
|
|
<pre class="literal-block">
|
|
6834284b6b24c3204eb2fea824d82f88883a3d95e8b4a21b8c0ded553d17d17d
|
|
df9a8a7104b1258f30bed3787e6cb896fca78c58f8e03b5f18f14951a87d9a08
|
|
</pre>
|
|
</div>
|
|
<div class="section" id="test-3-immutable">
|
|
<h2>test 3 (immutable)</h2>
|
|
<p>value:</p>
|
|
<pre class="literal-block">
|
|
12:Hello World!
|
|
</pre>
|
|
<p><strong>target ID</strong>:</p>
|
|
<pre class="literal-block">
|
|
e5f96f6f38320f0f33959cb4d3d656452117aadb
|
|
</pre>
|
|
</div>
|
|
</div>
|
|
<div class="section" id="resources">
|
|
<h1>resources</h1>
|
|
<p>Libraries that implement ed25519 DSA:</p>
|
|
<ul class="simple">
|
|
<li><a class="reference external" href="http://nacl.cr.yp.to/">NaCl</a></li>
|
|
<li><a class="reference external" href="https://github.com/jedisct1/libsodium">libsodium</a></li>
|
|
<li><a class="reference external" href="https://github.com/nightcracker/ed25519">nightcracker's ed25519</a></li>
|
|
</ul>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|