Search notes:

openssl enc

-pbkdf2

pbkdf2 stands for password based key derived function 2. 
$ 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

Base 64 encdodind/decoding

openssl enc    -base64 -in xyz.png -out xyz.b64
openssl enc -d -base64 -in xyz.b64 -out xyz.png

See also

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.

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