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Alexandre Dulaunoy 2014-01-12 20:16:35 +01:00
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README.md
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hotp-js - A simple JavaScript HOTP implementation hotp-js - A JavaScript HOTP implementation
================================================= =================================================
A simple JavaScript HOTP implementation (HMAC-Based One-Time Password Algorithm) as described in [RFC4226](http://tools.ietf.org/html/rfc4226). The library is relying on [crypto-js](http://code.google.com/p/crypto-js/) for the javascript HMAC-SHA1 implementation. A JavaScript HOTP implementation (HMAC-Based One-Time Password Algorithm) as described in [RFC4226](http://tools.ietf.org/html/rfc4226). The library is relying on [crypto-js](http://code.google.com/p/crypto-js/) for the javascript HMAC-SHA1 implementation.
How to use it How to use it
------------- -------------
Load the htop.js, set the private key of the token and the count step. Load the htop.js file, set the private key of the token and the count step.
```javascript ```javascript
otp = hotp("3132333435363738393031323334353637383930","4","dec6"); otp = hotp("3132333435363738393031323334353637383930","4","dec6");
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* dec7 - truncated 7 bytes decimal representation * dec7 - truncated 7 bytes decimal representation
* dec8 - truncated 8 bytes decimal representation * dec8 - truncated 8 bytes decimal representation
Example
-------
Check [this web page](http://www.foo.be/hotp/example.html) that will run in your browser htop-js with the RFC4226 test values.
Security recommendations Security recommendations
------------------------ ------------------------
* Don't forget to protect the key of the token along with the count value (e.g. local encryption of the software token). * If you implement software tokens, don't forget to protect the key of the token along with the count value (e.g. local encryption of the software token).
* Code is experimental. * Code is experimental.
License License