Tag Archives: DH

Auth Lib – with DH Key Exchange Algorithm, MD5 Digest Algorithm and Helper APIs

Posted on October 25, 2011 by daveti

Finally, I’ve got time to summaries the authentication work I’ve done for MGC:) This post gives a useful C lib on authentication focusing on DH key exchange algorithm and MD5 digest helper APIs. Please note this lib should be built/used … Continue reading →

Posted in Dave's Tools, Programming | Tagged , , , , | Leave a comment

Diffie-Hellman key exchange algorithm – deeper and better

Posted on April 28, 2011 by daveti

In my last post on D-H algorithm (http://daveti.blog.com/2011/04/21/diffiehellman-key-exchange-dh-algorithm-in-c/), we talked about 2 implementation using C. However, I’ve been thinking about one thing here these days – if there is any potential integer overflow risk in both functions (though for unsigned … Continue reading →

Posted in Programming | Tagged , , , | Leave a comment

Diffie–Hellman key exchange (DH algorithm in C)

Posted on April 21, 2011 by daveti

I am recently doing feature on authentication between MGC (Media Gateway Controller) and MG (Media Gateway). One important thing involved in Diffie-Hellman key exchange. Not sure if because the key formula ‘g^a mod(P)’ looks simple and stupid, it is hard … Continue reading →

Posted in Programming | Tagged , , | 2 Comments