Copyright (c) 1996, Jason Downs. All rights reserved.
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.Dd May 18, 1999 .Dt PWHASH 1 .Os .Sh NAME .Nm pwhash .Nd hashes passwords from the command line or standard input .Sh SYNOPSIS .Nm pwhash .Op Fl k .Op Fl b Ar rounds .Op Fl m .Op Fl s Ar salt .Op Fl p | Ar string .Sh DESCRIPTION .Nm prints the encrypted form of .Ar string to the standard output. This is mostly useful for encrypting passwords from within scripts.
p The options are as follows: l -tag -width Ds t Fl k Run in .Nm makekey 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. t Fl b Ar rounds Encrypt the string using Blowfish hashing with the specified .Ar rounds . t Fl m Encrypt the string using MD5. t Fl p Prompt for a single string with echo turned off. t Fl s Ar salt Encrypt the string using DES, with the specified .Ar salt . .El
p If no .Ar string is specified, .Nm reads one string per line from standard input, encrypting each one with the chosen algorithm from above. In case that no specific algorithm was given as a command line option, the algorithm specified in the default class in
a /etc/passwd.conf will be used.
p For MD5 and Blowfish a new random salt is automatically generated for each password.
p Specifying the .Ar string on the command line should be discouraged; using the standard input is more secure. .Sh FILES l -tag -width /etc/passwd.conf -compact t Pa /etc/passwd.conf .El .Sh SEE ALSO .Xr crypt 3 , .Xr passwd.conf 5