usage: Steganography
-a <arg>      Encryption cypher method <aes128 | aes192 | aes256 | des>
-embed        Embed a payload into a host
-extract      Extract payload from a host
-h,--help     Prints help message
-in <arg>     Payload file (only when embedding)
-m <arg>      Encryption chaining method <ecb | cfb | ofb | cbc>
-out <arg>    Output file (tampered host when embedding, payload when
extracting)
-p <arg>      Host file (original when embedding, tampered when
extracting
-pass <arg>   Encryption password
-steg <arg>   Steganography method: <LSB1 | LSB4 | LSBI>