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PWHASH(1) NetBSD General Commands Manual PWHASH(1)
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pwhash -- hashes passwords from the command line or standard input
pwhash [-km] [-b rounds] [-S rounds] [-s salt] [-p | string]
pwhash 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:
Encrypt the string using Blowfish hashing with the specified
-k Run in makekey(8) compatible mode; a single combined key and salt
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.
Encrypt the salt with HMAC-SHA1 using the password as key and the
specified rounds as a hint for the number of iterations.
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
For MD5 and Blowfish a new random salt is automatically generated for
Specifying the string on the command line should be discouraged; using
the standard input is more secure.
NetBSD 4.0 October 12, 2004 NetBSD 4.0