cryptdir - encrypt/decrypt all files in a directory

       Don Libes, National Institute of Standards and Technology

                                                 1 January 1993                                      CRYPTDIR(1)

       The man page is longer than the program.

cryptdir  encrypts  all  files  in the current directory (or the given directory if one is provided as an
       argument).  When called as decryptdir (i.e., same program, different name), all files are decrypted.

       cryptdir - encrypt/decrypt all files in a directory

       When encrypting, you are prompted twice for the password as a  precautionary  measure.   It  would  be  a
       disaster to encrypt files with a password that wasn't what you intended.

       In contrast, when decrypting, you are only prompted once.  If it's the wrong password, no harm done.

       Encrypted  files  have  the suffix .crypt appended.  This prevents files from being encrypted twice.  The
       suffix is removed upon decryption.  Thus, you can easily add files to  an  encrypted  directory  and  run
       cryptdir on it without worrying about the already encrypted files.

"ExploringExpect:ATcl-BasedToolkitforAutomatingInteractivePrograms" by Don Libes, O'Reilly and
       Associates, January 1995.

cryptdir [ dir ]
       decryptdir [ dir ]