Hey Ty, that's an advanced topic -- i suppose you have already looked at www.openssl.org -- I checked it and it is there -- I didn't read enough of the page to know if it is opensource -- the crypto stuff always had legality questions surrounding it and so has warnings about who can use it and where you can download it -- but that being said it is always posted publicly on the net. I have no idea what state openssl is in -- I haven't checked it for many years. What do you want it for? --le ----- Original Message ----- From: Tyler Littlefield To: programmingblind@xxxxxxxxxxxxx Sent: Thursday, August 27, 2009 1:54 PM Subject: looking for: crypto library for handling public-private keys Hello all, In case the subject didn't say it all, I'm looking for a good, easy-to-use crypto library for c++ that will handle encryption of blocks of data using public and private keys. I'd also like to find a good compression library, both cross-platform that will allow me to compress blocks of data.