NAME

       hashalot - read a passphrase and print a hash

SYNOPSIS

       hashalot [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ] [ HASHTYPE ]
       HASHTYPE [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ]

DESCRIPTION

       hashalot  is  a  small  tool  that reads a passphrase from standard input, hashes it using the given hash
       type, and prints the result to standard output.

       Warning: If you do not use the -x option, the hash is printed in binary. This  may  wedge  your  terminal
       settings, or even force you to log out.

       This  is not a general purpose hasher, only the first line is used, not even including the final newline.
       Thus, don't be surprised if the output seems to be different from other  tools  --  you'd  have  to  hash
       exactly the same string.

       Supported values for HASHTYPE:
               ripemd160 rmd160 rmd160compat sha256 sha384 sha512

OPTIONS

       The option -s SALT specifies an initialization vector to the hashing algorithm. You need this if you want
       to prevent identical passwords to map to identical hashes, which is a security risk.

       If the -x option is given then the hash will be printed as a string of hexadecimal digits.

       The  -n  option  can  be  used  to  limit  (or  increase)  the  number of bytes output. The default is as
       appropriate for the specified hash algorithm: 20 bytes for RIPEMD160,  32  bytes  for  SHA256,  etc.  The
       default for the "rmd160compat" hash is 16 bytes, for compatibility with the old kerneli.org utilities.

       The -q option causes hashalot to be more quiet and not print some warnings which may be superfluous.

AUTHOR

       Ben Slusky <sluskyb@paranoiacs.org>

       This manual page was written by Matthias Urlichs <smurf@debian.org>.

                                                   09 Feb 2004                                       HASHALOT(1)