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mod_s2s_keysize_policy/README.markdown @ 5160:8474a3b80200
mod_firewall: Fix 'is_admin' internal dependency rule #1797 (thanks diane)
Looks like the boolean logic was inverted here. Instead, for now,
simply check if is_admin is there. It is deprecated in trunk and was
briefly removed before being brought back with a 'deprecated' warning as
part of the new roles and permissions work. Making this dependency
conditioned on the existence of the underlying function should make it
work until it actually goes away for real.
| author | Kim Alvefur <zash@zash.se> |
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| date | Fri, 27 Jan 2023 23:06:25 +0100 |
| parent | 1895:101078d9cc27 |
| rev | line source |
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1 --- |
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2 summary: Distrust servers with too small keys |
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3 ... |
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4 |
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5 Introduction |
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6 ============ |
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7 |
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8 This module sets the security status of s2s connections to invalid if |
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9 their key is too small and their certificate was issued after 2014, per |
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10 CA/B Forum guidelines. |
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11 |
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12 Details |
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13 ======= |
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14 |
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15 Certificate Authorities were no longer allowed to issue certificates |
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16 with public keys smaller than 2048 bits (for RSA) after December 31 |
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17 2013. This module was written to enforce this, as there were some CAs |
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18 that were slow to comply. As of 2015, it might not be very relevant |
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19 anymore, but still useful for anyone who wants to increase their |
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20 security levels. |
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21 |
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22 When a server is determined to have a "too small" key, this module sets |
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23 its chain and identity status to "invalid", so Prosody will treat it as |
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24 a self-signed certificate istead. |
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25 |
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26 "Too small" |
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27 ----------- |
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28 |
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29 The definition of "too small" is based on the key type and is taken from |
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30 [RFC 4492]. |
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31 |
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32 Type bits |
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33 ------ ------ |
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34 RSA 2048 |
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35 DSA 2048 |
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36 DH 2048 |
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37 EC 233 |
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38 |
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39 Compatibility |
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40 ============= |
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41 |
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42 Works with Prosody 0.9 and later. Requires LuaSec with [support for |
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43 inspecting public keys](https://github.com/brunoos/luasec/pull/19). |
