PWHASH(1) BSD General Commands Manual PWHASH(1)NAMEpwhash — hashes passwords from the command line or standard input
SYNOPSISpwhash [-km] [-b rounds] [-S rounds] [-s salt] [-p | string]
DESCRIPTIONpwhash prints the encrypted form of string to the standard output. This
is mostly useful for encrypting passwords from within scripts.
The options are as follows:
-b rounds
Encrypt the string using Blowfish hashing with the specified
rounds.
-k Run in makekey(8) compatible mode. A single combined key (eight
chars) and salt (two chars) with no intermediate space are read
from standard input and the DES encrypted result is written to
standard output without a terminating newline.
-m Encrypt the string using MD5.
-p Prompt for a single string with echo turned off.
-S rounds
Encrypt the salt with HMAC-SHA1 using the password as key and the
specified rounds as a hint for the number of iterations.
-s salt
Encrypt the string using DES, with the specified salt.
If no string is specified, pwhash reads one string per line from standard
input, encrypting each one with the chosen algorithm from above. In the
event that no specific algorithm is given as a command line option, the
algorithm specified in the default class in /etc/passwd.conf will be
used.
For MD5 and Blowfish a new random salt is automatically generated for
each password.
Specifying the string on the command line should be discouraged; using
the standard input is more secure.
FILES
/etc/passwd.conf
SEE ALSOcrypt(3), passwd.conf(5)BSD October 16, 2009 BSD