DESCRIPTIONThe passwd command computes the hash of a password typed at
run-time or the hash of each password in a list. The password list
is taken from the named file for option -in file, from stdin for
option -stdin , or from the command line, or from the terminal otherwise.
The UNIX standard algorithm crypt and the MD5-based BSD password
algorithm 1 and its Apache variant apr1 are available. OPTIONS
-crypt Use the crypt algorithm (default).
-1 Use the MD5 based BSD password algorithm 1.
-apr1 Use the apr1 algorithm (Apache variant of the BSD algorithm).
-salt string Use the specified salt. When reading a password from the terminal,
this implies -noverify.
-in file Read passwords from file.
-stdin Read passwords from stdin.
-noverify Don't verify when reading a password from the terminal.
-quiet Don't output warnings when passwords given at the command
line are truncated.
-table In the output list, prepend the cleartext password and a TAB
character to each password hash.
EXAMPLESopenssl passwd -crypt -salt xx password prints xxj31ZMTZzkVA.
openssl passwd -1 -salt xxxxxxxx password prints $1$xxxxxxxx$UYCIxa628.9qXjpQCjM4a.
openssl passwd -apr1 -salt xxxxxxxx password prints $apr1$xxxxxxxx$dxHfLAsjHkDRmG83UXe8K0.
HP Open Source Security for OpenVMS Volume 2:... 
OpenSSL Command Line Interface (CLI) Reference
