Das Premium-CTF mit Quietscheentchen-Debugging!
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peerreviewed
by hlt
Difficulty estimate: - easy
Points: round(1000 · min(1, 10 / (9 + [58 solves]))) = 149 points
Description:
Because AES is so hard to understand, we went looking for something that is a little easier to follow. This paper (DOI: 10.1109/CCNC.2007.64, PDF) introduces an encrypted protocol that “prevents an attacker from recovering the transmitted information through operations on the encrypted vectors exchanged during the transmission procedure” - in fact, the paper even assures us that “the only identified way one can compromise the protocol security is by applying brute force attacks”. Since this is a peer-reviewed paper (by subject-matter experts, no less) we can be sure that our data is safe! My colleagues are still a bit concerned, though, so I am running this little test in order to prove that the protocol is secure.
Download:
Solved by:
# | Team | Time |
---|---|---|
🥇 | watevr | 2019-12-27 20:50:47 +0000 UTC |
🥈 | okay blue | 2019-12-27 20:51:57 +0000 UTC |
🥉 | Dice Squad | 2019-12-27 20:55:43 +0000 UTC |
4 | r00timentary | 2019-12-27 21:00:46 +0000 UTC |
5 | paunthezen | 2019-12-27 21:08:48 +0000 UTC |
6 | Corrupted Pwnis | 2019-12-27 21:11:12 +0000 UTC |
7 | The Flat Network Society | 2019-12-27 21:36:40 +0000 UTC |
8 | justCatTheFish | 2019-12-27 22:08:15 +0000 UTC |
9 | pasten | 2019-12-27 22:13:01 +0000 UTC |
10 | PPP | 2019-12-27 22:15:59 +0000 UTC |
11 | KJC+f0f+Spotless+SF+mhackeroni | 2019-12-27 22:30:53 +0000 UTC |
12 | 5BC | 2019-12-27 23:04:10 +0000 UTC |
13 | Nbz | 2019-12-27 23:06:05 +0000 UTC |
14 | lesglandus | 2019-12-27 23:44:34 +0000 UTC |
15 | kiona | 2019-12-28 00:22:14 +0000 UTC |
16 | Dragon Sector | 2019-12-28 00:28:18 +0000 UTC |
17 | perfect blue | 2019-12-28 02:03:33 +0000 UTC |
18 | p4 | 2019-12-28 02:36:31 +0000 UTC |
19 | RedGKFRocket | 2019-12-28 03:01:15 +0000 UTC |
20 | InfoSecIITR | 2019-12-28 03:13:04 +0000 UTC |
21 | $wag | 2019-12-28 04:52:45 +0000 UTC |
22 | Balsn | 2019-12-28 07:29:23 +0000 UTC |
23 | A*0*E | 2019-12-28 08:10:54 +0000 UTC |
24 | celebr0s | 2019-12-28 08:49:47 +0000 UTC |
25 | Pwnies | 2019-12-28 09:03:20 +0000 UTC |
26 | NeSE | 2019-12-28 10:47:12 +0000 UTC |
27 | openctfid | 2019-12-28 11:26:14 +0000 UTC |
28 | Ganesh | 2019-12-28 12:13:21 +0000 UTC |
29 | Datasnokmennene | 2019-12-28 12:27:30 +0000 UTC |
30 | ALLES | 2019-12-28 13:15:16 +0000 UTC |
31 | Tea Deliverers | 2019-12-28 13:27:47 +0000 UTC |
32 | ELT | 2019-12-28 13:43:33 +0000 UTC |
33 | kasia-tutej | 2019-12-28 13:43:42 +0000 UTC |
34 | LC↯BC | 2019-12-28 14:25:19 +0000 UTC |
35 | zehrileLau(n)de | 2019-12-28 14:44:55 +0000 UTC |
36 | polygl0ts | 2019-12-28 14:52:17 +0000 UTC |
37 | LosFuzzys | 2019-12-28 15:07:26 +0000 UTC |
38 | Black Bauhinia | 2019-12-28 16:21:34 +0000 UTC |
39 | cr0wn | 2019-12-28 16:40:34 +0000 UTC |
40 | VztekOverflow | 2019-12-28 17:21:20 +0000 UTC |
41 | Pham Solo 2 | 2019-12-28 18:04:42 +0000 UTC |
42 | TSG | 2019-12-28 18:23:21 +0000 UTC |
43 | SEIF | 2019-12-28 18:27:10 +0000 UTC |
44 | /upb/hack | 2019-12-28 18:38:10 +0000 UTC |
45 | RPISEC | 2019-12-28 20:18:49 +0000 UTC |
46 | Northern Coalition | 2019-12-28 21:20:09 +0000 UTC |
47 | meh_mavericks | 2019-12-29 07:08:20 +0000 UTC |
48 | nu117r4c3 | 2019-12-29 10:07:28 +0000 UTC |
49 | gf128 | 2019-12-29 13:03:24 +0000 UTC |
50 | ENOFLAG | 2019-12-29 13:30:03 +0000 UTC |
51 | ivani | 2019-12-29 13:50:51 +0000 UTC |
52 | FireShell | 2019-12-29 14:00:26 +0000 UTC |
53 | KaisHack GoN | 2019-12-29 14:01:00 +0000 UTC |
54 | Bushwhackers | 2019-12-29 15:40:03 +0000 UTC |
55 | tomcr00se | 2019-12-29 17:35:47 +0000 UTC |
56 | Tasteless | 2019-12-29 17:51:15 +0000 UTC |
57 | SIGFLAG | 2019-12-29 17:54:06 +0000 UTC |
58 | TokyoWesterns | 2019-12-29 19:37:48 +0000 UTC |