NAME¶

hashalot - read a passphrase and print a hash

SYNOPSIS¶

hashalot [ -t secs ] [ -s SALT ] [ -x ] [ -n #BYTES ] [ -C itercountk ] HASHTYPE
HASHTYPE [ -t secs ] [ -s SALT ] [ -x ] [ -n #BYTES ] [ -C itercountk ]

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.

Supported values for HASHTYPE:

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 -t option specifies a timeout for reading the passphrase from the terminal.

The -C option specifies that the hashed password has to be encrypted itercountk thousand times using AES-256. Use for compatability with loop-AES.

The options -t and -C are currently SUSE specific

AUTHOR¶

Ben Slusky <sluskyb@paranoiacs.org>

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