$ steghide info atbash.jpg 
"atbash.jpg":
  format: jpeg
  capacity: 2.4 KB
Try to get information about embedded data ? (y/n) y
Enter passphrase: 
  embedded file "encrypted.txt":
    size: 31.0 Byte
    encrypted: rijndael-128, cbc
    compressed: yes
Do you want to extract the embedded data ? (y/n) y
wrote extracted data to "encrypted.txt".