How to do encryption using AES in Openssl

Question

I am trying to write a sample program to do AES encryption using Openssl. I tried going through Openssl documentation( it\'s a pain), could not figure out much. I went throu

Answer 1

My suggestion is to run

openssl enc -aes-256-cbc -in plain.txt -out encrypted.bin

under debugger and see what exactly what it is doing. openssl.c is the only real tutorial/getting started/reference guide OpenSSL has. All other documentation is just an API reference.

U1: My guess is that you are not setting some other required options, like mode of operation (padding).

U2: this is probably a duplicate of this question: AES CTR 256 Encryption Mode of operation on OpenSSL and answers there will likely help.