A858DE45F56D9BC9 archive

201210260037 123xgb

explained decrypted filler

3DES(name+title) ECB, 41 GUIDs, seed 444

Metadata

Post ID
123xgb
Title
201210260037 → 2012-10-26 00:37 on A858's clock
Posted (UTC)
2012-10-26 04:37:20
Timezone
UTC−4 · title 00:37 against posted 04:37 UTC
Author
[deleted]
Account
A858DE45F56D9BC9 main account
Subreddit
r/A858DE45F56D9BC9 the main subreddit
Category
F3 filler: 3DES(name/title) → GUID list, seed known
Size
2,640 hex characters · 1,320 bytes
Cipher
3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key
MD5(A858DE45F56D9BC9201210260037) = 985a6a33ff222522e24b7b61c0937abd (name+title)
New here
Missing from the community archive; decrypted here for the first time. (new results)
GUIDs
41
Filler GUID seed
new Random(444).Next(9) ✓ verified
Run
Run 38 (seed 1,045,884,937) (seed)
Draw
32 · predicted N = 41 ✓
Machine boot
2012-10-11 03:41–03:51 (seed = uptime at app start)
Sources
arctic-shift · body from arctic-shift
Links
Reddit · Arctic Shift · JSON
Score · comments
1 · 0
Tags
automated (decryptable)2012Encrypted masked GUID listarctic-onlykey: name+titlerun: seed

From the post to its content

As posted (encrypted)

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
  • Read the ciphertext. Strip whitespace: 2,640 hex characters = 1,320 bytes = 165 8-byte 3DES blocks.
  • Derive the key. Password = A858DE45F56D9BC9201210260037 (name+title). Key = MD5(password) = 985a6a33ff222522e24b7b61c0937abd, used as a two-key 3DES key.
  • Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 41 GUIDs as hex (shown below).

Decrypted: GUID list

  1 c80513cc-239a-615d-90df-9d9559276d1b
  2 1a002664-88ea-048a-9c70-aa714f040e5f
  3 1753bcb3-a294-1314-ab0d-dcc3355951f5
  4 d303468a-7405-29b5-8283-18f412d6416c
  5 15a16b2c-2638-50b3-94f7-5d7858efff95
  6 19bca890-8b87-5793-b080-dd2219e0c8e6
  7 cd8a0ada-e478-7205-854d-bf607c798075
  8 e6683f39-fc00-1417-8c4d-bb9626c93dea
  9 bb1c3adc-906d-8f25-8514-39fa5153ee59
 10 d985cc2e-9836-8c14-b3ca-1d972e89551f
 11 b06115ac-3ae7-30f5-b6c5-8b71eca4ccbc
 12 a52c0983-c00e-05cc-bdb6-c3a293900cd2
 13 bb1584a2-387c-7513-a278-0bd90cf111fc
 14 39f788b6-98e3-4526-a3a3-d938a7bd8bd5
 15 ff8afac1-276b-60c1-ac90-bf1ee74eb3fe
 16 079511cd-1b6b-2686-a7f1-9f520e56cb7a
 17 8720c42f-9be8-4a02-9117-c8104b34bac2
 18 0f390fc3-8648-2e31-9298-b9322d5d0d0b
 19 608ce06e-8bd1-60b7-8e6a-abfb14aa2701
 20 15bd1dca-9c31-2790-a880-4185f99e3560
 21 91f7bf06-7e8f-786f-aba4-38ed23fb6a12
 22 12362a43-77c3-682e-b88f-2a51af1910fa
 23 cfbd1416-f876-05f9-b844-814d5b4d6d37
 24 0d95c446-a598-19a2-b311-4631d0a92d4b
 25 e5bb0b50-22e2-18ea-a33d-1035384775dd
 26 a12c47bb-13bd-0239-8b52-2e8bcb3ac1a3
 27 aa71eed8-5623-65af-9f77-3eee8e542f53
 28 af3954a1-a5b9-723d-b152-0b43c5545488
 29 e842efcd-bb71-1d7a-8e09-5760abd8a8dc
 30 ce7c78ed-713e-5ca9-97d3-bdfd232141d7
 31 15c291a4-409b-00aa-8151-344805e7417b
 32 6c228829-b8e5-3510-9128-be9a777a5af7
 33 56742f6c-4e86-743e-b223-b71992b7c288
 34 25bec53d-f8df-1bee-adda-2c917883a3c8
 35 b6664076-5865-6188-8212-cbadc394958a
 36 5d0144a4-a376-0f8c-9551-a6dce655d1e3
 37 bc3a8968-1184-7c97-8f68-710cdbc372b0
 38 b7654ad3-ae94-8a1a-a018-96666ef17714
 39 729523b4-b458-3d21-9f3a-a0a5aaa82bb7
 40 b46ea542-c677-03d6-adfc-f78a92e19912
 41 14464e61-2f39-3dea-b75e-51b99c247e05

Explanation

  1. Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 60125571883074624262760110671503716078303. Exactly this sequence comes out of new Random(444).Next(9): the per-post millisecond seed of the mask generator. The other 30 hex digits of each GUID are Guid.NewGuid() output and carry no message.
  2. Explain the count. This post is draw 32 of Run 38 (seed 1,045,884,937): new Random(1045884937), Next(8,64) per post. The RNG predicts N = 41; the post has N = 41 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-10-11 03:41–03:51).
  3. Conclusion. Filler. The content is fully explained by the two RNGs.

Related

Findings: Mask digit · Count RNG & runs · New results