Hi,, I am using Openssl for encryption and decryption. I need some information on AES encryption and decryption key and iv type. My doubt is when we are using a openssl in command line we need to pass key and iv as hex strings right? and same when we are EVP calls in C/C++ programming what is the type of Key and Iv. i mean it should a hex string or raw binary values? I saw, openssl command line interface code of openssl in that the hex strings are converted into hex values. But in EVP calls the Key and Iv are used directly. -- View this message in context: http://openssl.6102.n7.nabble.com/Need-information-on-AES-encryption-and-decryption-Key-and-IV-type-tp64055.html Sent from the OpenSSL - User mailing list archive at Nabble.com.