how to use cryptographics techniques in C program in linux

iqra · 06-20-2010, 01:12 PM

hello

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!!

irmin · 06-20-2010, 01:25 PM

Hi,

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":
http://www.ibm.com/developerworks/li...l-openssl.html
http://www.linuxjournal.com/article/4822