$ openssl enc -aes-256-cbc -in file.txt -out file.txt.encrypted -pass pass:9jd0kdfj0zkj4f *** WARNING : deprecated key derivation used. Using -iter or -pbkdf2 would be better. $ openssl enc -aes-256-cbc -in file.txt -out file.txt.encrypted -pass pass:9jd0kdfj0zkj4f -pbkdf2
openssl enc -base64 -in xyz.png -out xyz.b64 openssl enc -d -base64 -in xyz.b64 -out xyz.png
openssl enc -ciphername is similar to openssl ciphername. The first form does not work with engine-provided ciphers because this form is processed before the configuration file is read and any ENGINEs loaded.