hashalot - read a passphrase and print a hash
hashalot [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ] [ HASHTYPE ]
HASHTYPE [ -s SALT ] [ -x ] [ -n #BYTES ] [ -q ]
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
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
Supported values for HASHTYPE:
ripemd160 rmd160 rmd160compat sha256 sha384 sha512
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
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
The -q option causes hashalot to be more quiet and not print some
warnings which may be superfluous.
Ben Slusky <email@example.com>
This manual page was written by Matthias Urlichs <firstname.lastname@example.org>.
09 Feb 2004