Mercurial > prosody-modules
annotate mod_s2s_keysize_policy/mod_s2s_keysize_policy.lua @ 3898:e9e19b9a6a55
mod_storage_xmlarchive: Add a new API similar to map-stores
This can be used to replace messages with tombstones
author | Kim Alvefur <zash@zash.se> |
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date | Sat, 22 Feb 2020 21:12:29 +0100 |
parents | 27ffa6521d4e |
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rev | line source |
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1203
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mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
Kim Alvefur <zash@zash.se>
parents:
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1 -- mod_s2s_keysize_policy.lua |
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fc42f8484451
mod_s2s_keysize_policy: Add note about required LuaSec patch
Kim Alvefur <zash@zash.se>
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2 -- Requires LuaSec with this patch: https://github.com/brunoos/luasec/pull/12 |
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mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
Kim Alvefur <zash@zash.se>
parents:
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3 |
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mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
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4 module:set_global(); |
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5 |
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Kim Alvefur <zash@zash.se>
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6 local datetime_parse = require"util.datetime".parse; |
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7 local pat = "^([JFMAONSD][ceupao][glptbvyncr]) ?(%d%d?) (%d%d):(%d%d):(%d%d) (%d%d%d%d) GMT$"; |
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8 local months = {Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12}; |
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9 local function parse_x509_datetime(s) |
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10 local month, day, hour, min, sec, year = s:match(pat); month = months[month]; |
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11 return datetime_parse(("%04d-%02d-%02dT%02d:%02d:%02dZ"):format(year, month, day, hour, min, sec)); |
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12 end |
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13 |
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14 local weak_key_cutoff = datetime_parse("2014-01-01T00:00:00Z"); |
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15 |
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mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
Kim Alvefur <zash@zash.se>
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16 -- From RFC 4492 |
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17 local weak_key_size = { |
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18 RSA = 2048, |
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mod_s2s_keysize_policy: Don't trust keys weaker than 2048 bit RSA after 31 December 2013
Kim Alvefur <zash@zash.se>
parents:
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19 DSA = 2048, |
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Kim Alvefur <zash@zash.se>
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20 DH = 2048, |
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Kim Alvefur <zash@zash.se>
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21 EC = 233, |
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Kim Alvefur <zash@zash.se>
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22 } |
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Kim Alvefur <zash@zash.se>
parents:
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23 |
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Kim Alvefur <zash@zash.se>
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24 module:hook("s2s-check-certificate", function(event) |
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25 local host, session, cert = event.host, event.session, event.cert; |
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26 if cert and cert.pubkey then |
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27 local _, key_type, key_size = cert:pubkey(); |
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28 if key_size < ( weak_key_size[key_type] or 0 ) then |
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29 local issued = parse_x509_datetime(cert:notbefore()); |
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30 if issued > weak_key_cutoff then |
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27ffa6521d4e
mod_s2s_keysize_policy: Lower log message to a warning since it is not really a fatal error
Kim Alvefur <zash@zash.se>
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31 session.log("warn", "%s has a %s-bit %s key issued after 31 December 2013, invalidating trust!", host, key_size, key_type); |
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Kim Alvefur <zash@zash.se>
parents:
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32 session.cert_chain_status = "invalid"; |
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33 session.cert_identity_status = "invalid"; |
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Kim Alvefur <zash@zash.se>
parents:
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34 else |
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Kim Alvefur <zash@zash.se>
parents:
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35 session.log("warn", "%s has a %s-bit %s key", host, key_size, key_type); |
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36 end |
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37 else |
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38 session.log("info", "%s has a %s-bit %s key", host, key_size, key_type); |
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39 end |
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40 end |
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41 end); |