[akaash19]

Hello Friends,
I need simple file encryption library to encrypt files with symmetric key and decrypt them.
I went through open ssl and its too confusing.I just need simple library to perform just file encrypt and decrypt.
I am new in C, just done programming in java/php before.

Thanks all
Akaash

[Gene Poole]

For simplicity of code and understanding, I'd go with a simple stream cipher like RC4. What are your requirements? How secure does it need to be? Is it to be platform independent (Windows has had a cryptoAPI for some time now which makes things much easier)?

[akaash19]

THanks for the reply,
security is not primary concern.First i need a library.
I need to use encryption code in linux environment.
Regards
sumit

[Gene Poole]

Well, RC4 is very simple to code in C. It's a stream cipher so once it is initialized, just grab a byte one at a time and XOR it with your plaintext.

There's a complete example here:

http://en.wikipedia.org/wiki/Rc4