RSA encryption in JavaScript with available modulus

Question

I have some Java code that sends the public exponent and modulus (very, very long integer) via json to the javascript.

I need to apply RSA encryption on a text field (password) using these values in JavaScript.

I have tried many available things on net but no success yet. And I don't have SSL in the application.

Can someone please help me on this? Some sample/exact code will be a blessing.

I assumed you're talking about JavaScript, not Java. Note that they are not the same thing. — pimvdb
– pimvdb, Commented Oct 12, 2011 at 14:35
@pimvdb thanks. I edited the body also. I need encryption in javascript and I have the decryption in java. — Riju Mahna
– Riju Mahna, Commented Oct 12, 2011 at 14:41
Sorry, I misread. I thought you were using both for the same thing. You're completely correct. — pimvdb
– pimvdb, Commented Oct 12, 2011 at 14:59

Martin Jespersen · Accepted Answer · 2011-10-12 14:43:18Z

7

Have you checked out http://code.google.com/p/jscryptolib/ ?

Alternatively there is another implementation here: http://www-cs-students.stanford.edu/~tjw/jsbn/

You can find a demo of the second implementation here: http://www-cs-students.stanford.edu/~tjw/jsbn/rsa.html - just view source to see how it's used

edited Oct 12, 2011 at 14:43

answered Oct 12, 2011 at 14:35

Martin Jespersen

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2 Comments

Riju Mahna Over a year ago

Thanks Martin. But jscrypto demo never mentions rsa. The demo html not even loads the RSA script.maybe I am missing something, but I found it a mess. Will try the other one..

Martin Jespersen Over a year ago

Try to look under the header "Supported Cryptography Algorithms", there you will find the line "Public key cryptography: RSA, DSA, ECC, CPK, IBE" which does mention RSA :)

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