252 lines
No EOL
13 KiB
HTML
252 lines
No EOL
13 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!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" lang="fr" xml:lang="fr">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
|
|
|
|
|
|
<meta name="keywords" content="iPhone, Objective-C, Programming">
|
|
|
|
<link rel="shortcut icon" type="image/x-icon" href="/n3blog/img/favicon.ico" />
|
|
<link rel="stylesheet" type="text/css" href="/n3blog/assets/css/main.css" />
|
|
<link rel="stylesheet" type="text/css" href="/n3blog/css/twilight.css" />
|
|
<link rel="stylesheet" type="text/css" href="/n3blog/css/idc.css" />
|
|
<link rel="alternate" type="application/rss+xml" title="RSS" href="http://feeds.feedburner.com/yannespositocomen"/>
|
|
|
|
<link rel="alternate" lang="fr" xml:lang="fr" title="base64 et sha1 sur iPhone" type="text/html" hreflang="fr" href="/n3blog/fr/blog/2010-09-02-base64-and-sha1-on-iPhone/" />
|
|
<link rel="alternate" lang="en" xml:lang="en" title="base64 and sha1 on iPhone" type="text/html" hreflang="en" href="/n3blog/en/blog/2010-09-02-base64-and-sha1-on-iPhone/" />
|
|
<script type="text/javascript" src="/n3blog/js/jquery-1.3.1.min.js"></script>
|
|
<script type="text/javascript" src="/n3blog/js/jquery.cookie.js"></script>
|
|
<script type="text/javascript" src="/n3blog/js/index.js"></script>
|
|
<!--[if lt IE 9]>
|
|
<script src="http://ie7-js.googlecode.com/svn/version/2.1(beta4)/IE9.js"></script>
|
|
<![endif]-->
|
|
<!-- < % if containMaths %>
|
|
<script type="text/javascript" src="/n3blog/js/MathJax/MathJax.js"></script>
|
|
< % end %>
|
|
-->
|
|
<title>base64 and sha1 on iPhone</title>
|
|
</head>
|
|
<body lang="en">
|
|
<script type="text/javascript">// <![CDATA[
|
|
document.write('<div id="blackpage"><img src="/n3blog/img/loading.gif" alt="loading..."/></div>');
|
|
// ]]>
|
|
</script>
|
|
|
|
<div id="content">
|
|
|
|
<div id="choix">
|
|
<div class="return"><a href="#entete">↓ Menu ↓</a></div>
|
|
<div id="choixlang">
|
|
<a href="/n3blog/fr/blog/2010-09-02-base64-and-sha1-on-iPhone/" onclick="setLanguage('fr')">en Français</a>
|
|
</div>
|
|
</div>
|
|
<div id="titre">
|
|
<h1>
|
|
base64 and sha1 on iPhone
|
|
</h1>
|
|
|
|
</div>
|
|
|
|
<div class="flush"></div>
|
|
|
|
|
|
|
|
|
|
|
|
<div class="flush"></div>
|
|
<div id="afterheader">
|
|
<div class="corps">
|
|
<p>Lets be straight:
|
|
here are two functions to add to your code to have <code>base64</code> and <code>hexadecimal</code> version of the <code>sha1</code> hash of an NSString.</p>
|
|
|
|
<p>To use it, simply copy the code in your class and use as this:</p>
|
|
|
|
<pre class="twilight">
|
|
<span class="CCCPreprocessorLine">#<span class="CCCPreprocessorDirective">import</span> <span class="String"><span class="String"><</span>CommonCrypto/CommonDigest.h<span class="String">></span></span></span>
|
|
...
|
|
<span class="Support">NSString</span> *b64_hash = [<span class="Variable">self</span> <span class="SupportFunction">b64_sha1<span class="SupportFunction">:</span></span><span class="String"><span class="String">@"</span>some NSString to be sha1'ed<span class="String">"</span></span>];
|
|
...
|
|
<span class="Support">NSString</span> *hex_hash = [<span class="Variable">self</span> <span class="SupportFunction">hex_sha1<span class="SupportFunction">:</span></span><span class="String"><span class="String">@"</span>some NSString to be sha1'ed<span class="String">"</span></span>];
|
|
</pre>
|
|
|
|
<p>The <code>base64</code> algorithm must be programmed by hand on iPhone!</p>
|
|
|
|
<div class="code"><div class="file"><a href="/n3blog/en/blog/2010-09-02-base64-and-sha1-on-iPhone/code/iphone_base64_sha1.c"> ➥ iphone_base64_sha1.c </a></div><div class="withfile">
|
|
<pre class="twilight">
|
|
|
|
- (<span class="Storage">unsigned</span> <span class="Storage">char</span> *)sha1:(NSString *)baseString result:(<span class="Storage">unsigned</span> <span class="Storage">char</span> *)result {
|
|
<span class="Storage">char</span> *c_baseString=(<span class="Storage">char</span> *)[baseString UTF8String];
|
|
CC_SHA1(c_baseString, <span class="SupportFunction">strlen</span>(c_baseString), result);
|
|
<span class="Keyword">return</span> result;
|
|
}
|
|
|
|
- (NSString *)base64:(<span class="Storage">unsigned</span> <span class="Storage">char</span> *)result {
|
|
NSString *password=[[NSString alloc] init];
|
|
<span class="Storage">static</span> <span class="Storage">const</span> <span class="Storage">unsigned</span> <span class="Storage">char</span> cb64[<span class="Constant">65</span>]=<span class="String"><span class="String">"</span>ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/<span class="String">"</span></span>;
|
|
<span class="Keyword">for</span> (<span class="Storage">int</span> i=<span class="Constant">0</span>; i<CC_SHA1_DIGEST_LENGTH; i+=<span class="Constant">3</span>) {
|
|
password=[password stringByAppendingFormat:@<span class="String"><span class="String">"</span><span class="StringConstant">%c</span><span class="StringConstant">%c</span><span class="StringConstant">%c</span><span class="StringConstant">%c</span><span class="String">"</span></span>,
|
|
cb64[(result[i] &<span class="Constant">0xFC</span>)>><span class="Constant">2</span>],
|
|
cb64[((result[i] & <span class="Constant">0x03</span>) << <span class="Constant">4</span>)
|
|
| ((result[i + <span class="Constant">1</span>] & <span class="Constant">0xF0</span>) >> <span class="Constant">4</span>)],
|
|
cb64[((result[i + <span class="Constant">1</span>] & <span class="Constant">0x0F</span>) << <span class="Constant">2</span>)
|
|
| ((result[i + <span class="Constant">2</span>] & <span class="Constant">0xC0</span>) >> <span class="Constant">6</span>)],
|
|
cb64[result[i+<span class="Constant">2</span>]&<span class="Constant">0x3F</span>]
|
|
];
|
|
}
|
|
<span class="Keyword">return</span> password;
|
|
}
|
|
|
|
- (NSString *)hexadecimalRepresentation:(<span class="Storage">unsigned</span> <span class="Storage">char</span> *)result {
|
|
NSString *password=[[NSString alloc] init];
|
|
<span class="Keyword">for</span> (<span class="Storage">int</span> i=<span class="Constant">0</span>; i<CC_SHA1_DIGEST_LENGTH; i++) {
|
|
password=[password stringByAppendingFormat:@<span class="String"><span class="String">"</span><span class="StringConstant">%02x</span><span class="String">"</span></span>, result[i]];
|
|
}
|
|
<span class="Keyword">return</span> password;
|
|
}
|
|
|
|
- (NSString *)b64_sha1:(NSString *)inputString {
|
|
<span class="Storage">unsigned</span> <span class="Storage">char</span> result[CC_SHA1_DIGEST_LENGTH+<span class="Constant">1</span>];
|
|
[self sha1:inputString result:result];
|
|
<span class="Keyword">return</span> [self base64:result];
|
|
}
|
|
|
|
- (NSString *)hex_sha1:(NSString *)inputString {
|
|
<span class="Storage">unsigned</span> <span class="Storage">char</span> result[CC_SHA1_DIGEST_LENGTH+<span class="Constant">1</span>];
|
|
[self sha1:inputString result:result];
|
|
<span class="Keyword">return</span> [self hexadecimalRepresentation:result];
|
|
}
|
|
</pre>
|
|
</div></div>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
<div id="choixrss">
|
|
<a id="rss" href="http://feeds.feedburner.com/yannespositocomen">
|
|
Subscribe
|
|
</a>
|
|
</div>
|
|
<script type="text/javascript">
|
|
$(document).ready(function(){
|
|
$('#comment').hide();
|
|
$('#clickcomment').click(showComments);
|
|
});
|
|
function showComments() {
|
|
$('#comment').show();
|
|
$('#clickcomment').fadeOut();
|
|
}
|
|
document.write('<div id="clickcomment">Comments</div>');
|
|
</script>
|
|
<div class="flush"></div>
|
|
<div class="corps" id="comment">
|
|
<h2 class="first">comments</h2>
|
|
<noscript>
|
|
You must enable javascript to comment.
|
|
</noscript>
|
|
|
|
<script type="text/javascript">
|
|
var idcomments_acct = 'a307f0044511ff1b5cfca573fc0a52e7';
|
|
var idcomments_post_id = '/n3blog/en/blog/2010-09-02-base64-and-sha1-on-iPhone/';
|
|
var idcomments_post_url = 'http://yannesposito.com/n3blog/en/blog/2010-09-02-base64-and-sha1-on-iPhone/';
|
|
</script>
|
|
<span id="IDCommentsPostTitle" style="display:none"></span>
|
|
<script type='text/javascript' src='/n3blog/js/genericCommentWrapperV2.js'></script>
|
|
|
|
</div>
|
|
|
|
<div id="entete" class="corps_spaced">
|
|
<div id="liens">
|
|
<ul><li><a href="/n3blog/en/">Home</a></li>
|
|
<li><a href="/n3blog/en/blog/">Blog</a></li>
|
|
<li><a href="/n3blog/en/softwares/">Softwares</a></li>
|
|
<li><a href="/n3blog/en/about/">About</a></li></ul>
|
|
</div>
|
|
<div class="flush"></div>
|
|
<hr/>
|
|
<div id="next_before_articles">
|
|
<div id="previous_articles">
|
|
previous entries
|
|
|
|
<div class="previous_article">
|
|
<a href="/n3blog/en/blog/2010-08-31-send-mail-from-command-line-with-attached-file/"><span class="nicer">«</span> send mail from command line with attached file</a>
|
|
</div>
|
|
|
|
|
|
<div class="previous_article">
|
|
<a href="/n3blog/en/blog/2010-08-23-Now-heberged-on-heroku/"><span class="nicer">«</span> Now hosted by heroku</a>
|
|
</div>
|
|
|
|
|
|
<div class="previous_article">
|
|
<a href="/n3blog/en/blog/2010-07-09-Indecidabilities/"><span class="nicer">«</span> Undecidabilities (part 1)</a>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
<div id="next_articles">
|
|
next entries
|
|
|
|
<div class="next_article">
|
|
<a href="/n3blog/en/blog/2010-09-02-Use-git-to-calculate-trusted-mtimes/">Use git to calculate trusted mtimes <span class="nicer">»</span></a>
|
|
</div>
|
|
|
|
|
|
<div class="next_article">
|
|
<a href="/n3blog/en/blog/2010-10-06-New-Blog-Design-Constraints/">New Blog Design Constraints <span class="nicer">»</span></a>
|
|
</div>
|
|
|
|
|
|
<div class="next_article">
|
|
<a href="/n3blog/en/blog/2010-10-10-Secure-eMail-on-Mac-in-few-steps/">Secure eMail on Mac in few steps <span class="nicer">»</span></a>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
<div class="flush"></div>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
<div id="bottom">
|
|
<div>
|
|
<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/">Copyright ©, Yann Esposito</a>
|
|
</div>
|
|
<div id="lastmod">
|
|
Created: 09/02/2010
|
|
Modified: 09/04/2010
|
|
</div>
|
|
<div>
|
|
Entirely done with
|
|
<a href="http://www.vim.org">Vim</a>
|
|
and
|
|
<a href="http://nanoc.stoneship.org">nanoc</a>
|
|
</div>
|
|
<div>
|
|
<a href="/n3blog/en/validation/">Validation</a>
|
|
<a href="http://validator.w3.org/check?uri=referer"> [xhtml] </a>
|
|
.
|
|
<a href="http://jigsaw.w3.org/css-validator/check/referer?profile=css3"> [css] </a>
|
|
.
|
|
<a href="http://validator.w3.org/feed/check.cgi?url=http%3A//yannesposito.com/n3blog/en/blog/feed/feed.xml">[rss]</a>
|
|
</div>
|
|
</div>
|
|
<div class="clear"></div>
|
|
</div>
|
|
<script type="text/javascript">
|
|
var clicky = { log: function(){ return; }, goal: function(){ return; }};
|
|
var clicky_site_id = 66374971;
|
|
(function() {
|
|
var s = document.createElement('script');
|
|
s.type = 'text/javascript';
|
|
s.async = true;
|
|
s.src = ( document.location.protocol == 'https:' ? 'https://static.getclicky.com/js' : 'http://static.getclicky.com/js' );
|
|
( document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0] ).appendChild( s );
|
|
})();
|
|
</script>
|
|
<noscript><p><img alt="Clicky" width="1" height="1" src="http://in.getclicky.com/66374971ns.gif" /></p></noscript>
|
|
|
|
</body>
|
|
</html> |