201210052303 110yyr

explained decrypted filler

3DES(name+title) ECB, 58 GUIDs, seed 325

Metadata

Post ID: 110yyr
Title: 201210052303 → 2012-10-05 23:03 on A858's clock
Posted (UTC): 2012-10-06 03:03:46
Timezone: UTC−4 · title 23:03 against posted 03:03 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,728 hex characters · 1,864 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201210052303) = 1017e2853e8a15f13bb56382400ee4df (name+title)
New here: Missing from the community archive; decrypted here for the first time. (new results)
GUIDs: 58
Filler GUID seed: new Random(325).Next(9) ✓ verified
Run: Run 35 (seed 854,622,578) (seed)
Draw: 273 · predicted N = 58 ✓
Machine boot: 2012-09-22 10:16–10:36 (seed = uptime at app start)
Sources: arctic-shift · body from arctic-shift
Links: Reddit · Arctic Shift · JSON
Score · comments: 3 · 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: 3,728 hex characters = 1,864 bytes = 233 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201210052303 (name+title). Key = MD5(password) = 1017e2853e8a15f13bb56382400ee4df, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 58 GUIDs as hex (shown below).

Decrypted: GUID list

  1 b7dd147c-094f-403d-b38b-0c01d8fbf6d5
  2 772f853a-3b06-1560-b805-c297f1552fb4
  3 44d4dfc6-64f3-8648-8921-0c86167742d7
  4 33383c6b-d4b0-8c49-aa91-e0348ae10b6d
  5 f8494b6b-9139-84d7-8c23-ae2fcd00bddc
  6 d01681d6-d62f-50c8-80d6-7a5a2cff45e7
  7 f77daa59-609f-4fef-9da1-856dc421fba1
  8 825e0dce-9c41-4de3-9cd9-e51e168b2db5
  9 83c3c7dd-dcf9-15be-81ed-7a6399ebb7b1
 10 08ea3541-df83-1bc2-ab15-d136faa650d9
 11 873407e5-a841-6172-b6d8-a7c9b464b6ea
 12 cfcd0b2c-8daf-1ed8-b6d0-bb9de816fbd5
 13 8bea64cd-5ef4-0774-827d-bb28cd7c1d58
 14 7f4e9b21-4a3f-4b04-a540-77849ca7c372
 15 951f6117-718c-441a-ae30-481859f595ac
 16 edf15a6e-9851-8266-a4d6-c41958e3c15e
 17 36bca53b-5030-4522-99d0-3bd50d17d4bd
 18 c5c43c0e-5224-4349-897c-18f22f4f3935
 19 861e0108-a8cd-4b71-bde2-3656e832bd2e
 20 b29185ec-3723-13b8-b70a-61981d87471d
 21 85e32531-719d-8ae0-a588-7118ab8a4afa
 22 bb783efc-646d-5d87-b332-44ae03641356
 23 cb7d0b0c-8f5d-86aa-b250-89ab98a296f2
 24 df950b69-51f5-582b-81db-551a09595f53
 25 dd59c942-a0a6-4af3-a4c8-9f7f9a18b342
 26 f8dd5cd0-5edd-5b07-af25-27e3b1b41183
 27 392a8639-24ac-38e1-b430-a7f8aeac9da5
 28 1754a3d3-ab37-0957-8149-24d467bbf882
 29 93a93c73-2a1b-2dd1-88d3-dd39b8370168
 30 7ec8d822-2556-70fe-ac90-79fdf745f6f4
 31 5069a41b-c116-16e6-851b-cef7e6dbf215
 32 3ee4519a-de01-0013-90ac-a7a9608651e2
 33 6ce4b3d7-ca75-8e09-aa04-0cd95a9f86db
 34 e1d258b9-cc00-17ba-8fb4-37aeb4b0a7af
 35 5ab2c9d7-c571-1ec3-8500-f8fc261080e2
 36 5026720b-46da-7d2a-8da4-c4288ea43dde
 37 5222d990-5fb1-2227-a05f-6a4a592bec29
 38 d22261f0-6959-792b-b40b-e7edd5acb864
 39 7a5398ab-cb3d-0275-bfba-80fb4729a869
 40 e119aa58-fb5c-4654-984b-b617daec46b9
 41 705639ca-b6b7-0164-95a9-3d463c6e2a3f
 42 004668cd-088f-02af-bdea-c3e22959485b
 43 d06e7d4c-6a1f-0219-a1aa-3e84838b29e6
 44 700805b0-f73d-0e36-b81b-d123a0db020f
 45 cc03531c-dd4f-2a86-a104-691818362fe9
 46 ccaff5c8-630b-0a13-882f-a03b0a5ace8e
 47 11e53cec-9ec4-8343-bc8a-1c85aafebc0c
 48 0972de10-f342-44fb-8ecb-20f232a7c4bc
 49 57d448f9-3476-8f0c-83c9-f18a638b8096
 50 97b6aa56-6fad-112e-8c2a-c707f2403d64
 51 21d1a66b-af7b-1447-9c81-75d48c9b6470
 52 fd31aaab-6e61-1b5e-b7a5-3d6d9e1b7992
 53 e866637b-42ba-765b-9ded-7899a23dbc76
 54 db03b135-1398-69cc-8481-7d44823422c4
 55 eb565fe0-6cd6-25bb-96f1-30f85f468c60
 56 5e84d0bd-f77a-82ae-a145-f84f8978ad40
 57 e44885c0-0521-2c2f-a3ba-cbbb75efc03f
 58 114d9e6a-507a-3df6-a74b-a865994411c0

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 4188854411610448444185854530271081172704000020848111762823. Exactly this sequence comes out of new Random(325).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.
Explain the count. This post is draw 273 of Run 35 (seed 854,622,578): new Random(854622578), Next(8,64) per post. The RNG predicts N = 58; the post has N = 58 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-09-22 10:16–10:36).
Conclusion. Filler. The content is fully explained by the two RNGs.

Metadata

From the post to its content

As posted (encrypted)

Decrypted: GUID list

Explanation

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