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129 lines
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HTML
129 lines
4.7 KiB
HTML
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<title>jsrsasign - RSA Signing and Verification in JavaScript</title>
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<h1>jsrsasign - RSA Signing and Verification in JavaScript</h1>
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<div align="right">Kenji Urushima<br/>Last Update: Apr 30, 2012</div>
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<p>
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The 'jsrsasign'(RSA-Sign JavaScript Library) is a open source free pure JavaScript implementation of
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<a href="http://www.rsa.com/rsalabs/node.asp?id=2125" target="_blank">PKCS#1 v2.1 RSASSA-PKCS1-v1_5</a> RSA signing and validation algorithm.
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</p>
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<h3>NEWS</h3>
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Release 1.2 is now available on Apr 30, 2012 for fixing critical zero padding bug and supporting some other hash
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functions.
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<h3>DEMO</h3>
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<ul>
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<li><a href="sample-rsasign.html">Sample Application for RSA signing with JavaScript</a>
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<br clear="all"/>
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<img src="sample-rsasign.png" width="480px" style="border: 2px #dddddd solid;"/>
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<br clear="all"/>
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</li>
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</ul>
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<h3>SOURCE CODES</h3>
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<p>
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The 'rsa-sign' library contains following source codes.
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<ul>
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<li><b><a href="rsa-sign.js">rsa-sign.js</a></b> - RSAKey class extension for RSA signing and verification.</li>
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<li><b><a href="x509.js">x509.js</a></b> - X509 class to read subject public key from a PEM formatted X.509 certificate.</li>
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<li><b><a href="rsa-pem.js">rsa-pem.js</a></b> - RSAKey class extension to read PKCS#1 RSA private key PEM file</li>
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<li><b><a href="asn1hex.js">asn1hex.js</a></b> - simple ASN.1 parser to read hexadecimal encoded ASN.1 DER</li>
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</ul>
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</p>
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<h3>LICENSE</h3>
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The 'jsrsasign'(RSA-Sign JavaScript Library) is licensed under the terms of the MIT license
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reproduced below.
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<ul>
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<li><a href="LICENSE.txt">LICENSE.txt - RSA-Sign JavaScript Library LICENSE</a></li>
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</ul>
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<h3>How to sign</h3>
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<pre><blockquote style="background:lightgray">
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var rsa = new RSAKey();
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rsa.readPrivateKeyFromPEMString(_PEM_PRIVATE_KEY_STRING_);
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var hSig = rsa.signString("aaa", "sha1"); // sign a string "aaa" with key
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</blockquote></pre>
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<h3>How to verify signature</h3>
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<pre><blockquote style="background:lightgray">
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vr x509 = new X509();
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x509.readCertPEM(_PEM_X509CERT_STRING_);
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var result = x509.subjectPublicKeyRSA.verifyString("aaa", _HEX_SIGNATURE_);
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</blockquote></pre>
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<h3>How to add supported signature algorithms</h3>
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The script "rsa-sign.js" currently supports
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SHA1withRSA,
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SHA256withRSA,
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SHA512withRSA,
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MD5withRSA and
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RIPEMD160withRSA
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signature algorithms. However you can extend other signature algorithms
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such like MD2withRSA or SHA384withRSA by just specifying two variables in it.
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<pre><blockquote style="background:lightgray">
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_RSASIGN_DIHEAD['md2'] = "30..."; // Hexadecimal DigestInfo prefix for MD5
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_RSASIGN_HASHHEXFUNC['md2'] = md2hex; // function which returns value in hex.
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</blockquote></pre>
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<h3>Required Third Party Source Codes</h3>
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<p>
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<ul>
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<li><a href="http://www-cs-students.stanford.edu/~tjw/jsbn/" target="_blank">Tom Wu's jsbn library - BigInteger and RSA</a>
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<ul>
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<li>base64.js - String encoder for Base64 and Hex</li>
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<li>jsbn.js - basic BigInteger class</li>
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<li>jsbn2.js - BigInteger class extension</li>
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<li>prng4.js - Random number generator</li>
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<li>rng.js - Random number generator</li>
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<li>rsa.js - RSAKey class for RSA public key encryption.</li>
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<li>rsa2.js - RSA class extension for RSA private key decryption.</li>
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</ul>
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</li>
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<li>
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<a href="http://pajhome.org.uk/crypt/md5/" target="_blank">Paul Johnston's JavaScript MD5</a>
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<ul>
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<li>You can download MD5, SHA1, SHA256, SHA512 and RIPEMD-160 implementation of JavaScript.</a>
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</ul>
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<i>NOTE: As for hash algorithm, you can use any other hash implementations.
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The requirement is to provide a function which returns hexadecimal
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string as the result.</i>
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</li>
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</ul>
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</p>
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<h3>Release</h3>
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<ul>
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<li>Release 1.2: Apr 30, 2012 - Critical zero padding bug fix and some other hash support</li>
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<li>Release 1.1: Sep 25, 2010 - Web contents update</li>
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<li>Release 1.0: Jun 03, 2010 - Initial release</li>
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</ul>
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<a href="ChangeLog.txt">See 'ChangeLog.txt' in detail.</a>
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<p></p>
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<center>
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Copyright © 2010-2012 Kenji Urushima. All rights reserved.
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</center>
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<div align="right">
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