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synapse/debian/hash_password.ronn
2018-12-20 11:15:52 +00:00

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hash_password(1) -- Calculate the hash of a new password, so that passwords can be reset
========================================================================================
## SYNOPSIS
`hash_password` [`-p`|`--password` [password]] [`-c`|`--config` <file>]
## DESCRIPTION
**hash_password** calculates the hash of a supplied password using bcrypt.
`hash_password` takes a password as an parameter either on the command line
or the `STDIN` if not supplied.
It accepts an YAML file which can be used to specify parameters like the
number of rounds for bcrypt and password_config section having the pepper
value used for the hashing. By default `bcrypt_rounds` is set to **10**.
The hashed password is written on the `STDOUT`.
## FILES
A sample YAML file accepted by `hash_password` is described below:
bcrypt_rounds: 17
password_config:
pepper: "random hashing pepper"
## OPTIONS
* `-p`, `--password`:
Read the password form the command line if [password] is supplied.
If not, prompt the user and read the password form the `STDIN`.
It is not recommended to type the password on the command line
directly. Use the STDIN instead.
* `-c`, `--config`:
Read the supplied YAML <file> containing the options `bcrypt_rounds`
and the `password_config` section containing the `pepper` value.
## EXAMPLES
Hash from the command line:
$ hash_password -p "p@ssw0rd"
$2b$12$VJNqWQYfsWTEwcELfoSi4Oa8eA17movHqqi8.X8fWFpum7SxZ9MFe
Hash from the STDIN:
$ hash_password
Password:
Confirm password:
$2b$12$AszlvfmJl2esnyhmn8m/kuR2tdXgROWtWxnX.rcuAbM8ErLoUhybG
Using a config file:
$ hash_password -c config.yml
Password:
Confirm password:
$2b$12$CwI.wBNr.w3kmiUlV3T5s.GT2wH7uebDCovDrCOh18dFedlANK99O
## COPYRIGHT
This man page was written by Rahul De <<rahulde@swecha.net>>
for Debian GNU/Linux distribution.
## SEE ALSO
synctl(1), synapse_port_db(1), register_new_matrix_user(1)