256 Bit Key Advanced Encryption Standard

The OpenSSL software is the best choice for encrypting plaintext without any backdoors, header blocks, or key recovery subterfuges. You got a problem with .dat ?

Here are commands to encrypt and decrypt with AES 256 bit keys:

openssl aes-256-cbc -e -in c:\export\pop.doc -out c:\export\famous.aes256 -nosalt -iv 75757575757575757575757575757575 -K 1515151515151515151515151515151515151515151515151515151515151515


openssl aes-256-cbc -d -in c:\export\famous.aes256 -out c:\export\pop2.doc -nosalt -iv 75757575757575757575757575757575 -K 1515151515151515151515151515151515151515151515151515151515151515