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8da16e55fe
`hash_password` now actually accepts password from stdin. The `getpass` reads from TTY, and does NOT accept stdin in any way. The manpage has been updated to reflect that.
182 lines
6 KiB
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182 lines
6 KiB
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<title>hash_password(1) - Calculate the hash of a new password, so that passwords can be reset</title>
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<a href="#NAME">NAME</a>
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<a href="#SYNOPSIS">SYNOPSIS</a>
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<a href="#DESCRIPTION">DESCRIPTION</a>
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<a href="#FILES">FILES</a>
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<a href="#OPTIONS">OPTIONS</a>
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<a href="#EXAMPLES">EXAMPLES</a>
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<a href="#COPYRIGHT">COPYRIGHT</a>
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<li class='tl'>hash_password(1)</li>
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<li class='tr'>hash_password(1)</li>
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</ol>
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<h2 id="NAME">NAME</h2>
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<p class="man-name">
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<code>hash_password</code> - <span class="man-whatis">Calculate the hash of a new password, so that passwords can be reset</span>
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</p>
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<h2 id="SYNOPSIS">SYNOPSIS</h2>
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<table>
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<tbody>
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<tr>
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<td>
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<code>hash_password</code> [<code>-p</code>
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</td>
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<td>
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<code>--password</code> [password]] [<code>-c</code>
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</td>
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<td>
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<code>--config</code> <var>file</var>]</td>
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</tr>
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</tbody>
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</table>
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<h2 id="DESCRIPTION">DESCRIPTION</h2>
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<p><strong>hash_password</strong> calculates the hash of a supplied password using bcrypt.</p>
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<p><code>hash_password</code> takes a password as an parameter either on the command line
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or the <code>STDIN</code> if not supplied.</p>
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<p>It accepts an YAML file which can be used to specify parameters like the
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number of rounds for bcrypt and password_config section having the pepper
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value used for the hashing. By default <code>bcrypt_rounds</code> is set to <strong>12</strong>.</p>
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<p>The hashed password is written on the <code>STDOUT</code>.</p>
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<h2 id="FILES">FILES</h2>
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<p>A sample YAML file accepted by <code>hash_password</code> is described below:</p>
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<p>bcrypt_rounds: 17
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password_config:
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pepper: "random hashing pepper"</p>
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<h2 id="OPTIONS">OPTIONS</h2>
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<dl>
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<dt>
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<code>-p</code>, <code>--password</code>
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</dt>
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<dd>Read the password form the command line if [password] is supplied, or from <code>STDIN</code>.
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If not, prompt the user and read the password from the tty prompt.
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It is not recommended to type the password on the command line
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directly. Use the STDIN instead.</dd>
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<dt>
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<code>-c</code>, <code>--config</code>
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</dt>
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<dd>Read the supplied YAML <var>file</var> containing the options <code>bcrypt_rounds</code>
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and the <code>password_config</code> section containing the <code>pepper</code> value.</dd>
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</dl>
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<h2 id="EXAMPLES">EXAMPLES</h2>
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<p>Hash from the command line:</p>
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<pre><code>$ hash_password -p "p@ssw0rd"
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$2b$12$VJNqWQYfsWTEwcELfoSi4Oa8eA17movHqqi8.X8fWFpum7SxZ9MFe
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</code></pre>
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<p>Hash from the stdin:</p>
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<pre><code>$ cat password_file | hash_password
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Password:
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Confirm password:
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$2b$12$AszlvfmJl2esnyhmn8m/kuR2tdXgROWtWxnX.rcuAbM8ErLoUhybG
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</code></pre>
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<p>Hash from the prompt:</p>
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<pre><code>$ hash_password
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Password:
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Confirm password:
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$2b$12$AszlvfmJl2esnyhmn8m/kuR2tdXgROWtWxnX.rcuAbM8ErLoUhybG
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</code></pre>
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<p>Using a config file:</p>
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<pre><code>$ hash_password -c config.yml
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Password:
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Confirm password:
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$2b$12$CwI.wBNr.w3kmiUlV3T5s.GT2wH7uebDCovDrCOh18dFedlANK99O
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</code></pre>
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<h2 id="COPYRIGHT">COPYRIGHT</h2>
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<p>This man page was written by Rahul De «rahulde@swecha.net»
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for Debian GNU/Linux distribution.</p>
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<h2 id="SEE-ALSO">SEE ALSO</h2>
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<p><span class="man-ref">synctl<span class="s">(1)</span></span>, <span class="man-ref">synapse_port_db<span class="s">(1)</span></span>, <span class="man-ref">register_new_matrix_user<span class="s">(1)</span></span>, <span class="man-ref">synapse_review_recent_signups<span class="s">(1)</span></span></p>
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<ol class='man-decor man-foot man foot'>
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<li class='tl'></li>
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<li class='tc'>August 2024</li>
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<li class='tr'>hash_password(1)</li>
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