synapse/debian/hash_password.1

.\" generated with Ronn/v0.7.3
.\" http://github.com/rtomayko/ronn/tree/0.7.3
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.TH "HASH_PASSWORD" "1" "February 2017" "" ""
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.SH "NAME"
\fBhash_password\fR \- Calculate the hash of a new password, so that passwords can be reset
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.SH "SYNOPSIS"
\fBhash_password\fR [\fB\-p\fR|\fB\-\-password\fR [password]] [\fB\-c\fR|\fB\-\-config\fR \fIfile\fR]
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.SH "DESCRIPTION"
\fBhash_password\fR calculates the hash of a supplied password using bcrypt\.
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.P
\fBhash_password\fR takes a password as an parameter either on the command line or the \fBSTDIN\fR if not supplied\.
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.P
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 \fBbcrypt_rounds\fR is set to \fB10\fR\.
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.P
The hashed password is written on the \fBSTDOUT\fR\.
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.SH "FILES"
A sample YAML file accepted by \fBhash_password\fR is described below:
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.P
bcrypt_rounds: 17 password_config: pepper: "random hashing pepper"
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.SH "OPTIONS"
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.TP
\fB\-p\fR, \fB\-\-password\fR
Read the password form the command line if [password] is supplied\. If not, prompt the user and read the password form the \fBSTDIN\fR\. It is not recommended to type the password on the command line directly\. Use the STDIN instead\.
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.TP
\fB\-c\fR, \fB\-\-config\fR
Read the supplied YAML \fIfile\fR containing the options \fBbcrypt_rounds\fR and the \fBpassword_config\fR section containing the \fBpepper\fR value\.
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.SH "EXAMPLES"
Hash from the command line:
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.IP "" 4
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.nf

$ hash_password \-p "p@ssw0rd"
$2b$12$VJNqWQYfsWTEwcELfoSi4Oa8eA17movHqqi8\.X8fWFpum7SxZ9MFe
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.fi
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.IP "" 0
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.P
Hash from the STDIN:
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.IP "" 4
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.nf

$ hash_password
Password:
Confirm password:
$2b$12$AszlvfmJl2esnyhmn8m/kuR2tdXgROWtWxnX\.rcuAbM8ErLoUhybG
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.fi
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.IP "" 0
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.P
Using a config file:
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.IP "" 4
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.nf

$ hash_password \-c config\.yml
Password:
Confirm password:
$2b$12$CwI\.wBNr\.w3kmiUlV3T5s\.GT2wH7uebDCovDrCOh18dFedlANK99O
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.fi
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.IP "" 0
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.SH "COPYRIGHT"
This man page was written by Rahul De <\fIrahulde@swecha\.net\fR> for Debian GNU/Linux distribution\.
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.SH "SEE ALSO"
synctl(1), synapse_port_db(1), register_new_matrix_user(1)