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Old 06-20-2010, 01:12 PM   #1
Registered: May 2010
Posts: 34

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how to use cryptographics techniques in C program in linux


i have a simple client server program in which different paramters are asked by client. i want to use cryptographic techniques like DES, AES, RSA

but i do not know how and where to use.... i m doing socket programing first time even programing in linux. so i do not know linux functions and libraries and their usage.

i have this program in simple C langugae.

plz help me with this!!
Old 06-20-2010, 01:25 PM   #2
Registered: Jan 2010
Location: the universe
Distribution: Slackware (modified), Slackware64 (modified), openSuSE (modified)
Posts: 342

Rep: Reputation: 62

a good encryption library are the OpenSSL or GnuTLS libraries. Maybe this will be a good starting point?
Also the mcrypt library man be worth to be looked at (man mcrypt). This library only supports encryption, but no network support.

Some OpenSSL "tutorials":


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