201212080700 14hu3y

explained decrypted filler

seed 117

Metadata

Post ID: 14hu3y
Title: 201212080700 → 2012-12-08 07:00 on A858's clock
Posted (UTC): 2012-12-08 12:00:00
Timezone: UTC−5 · title 07:00 against posted 12:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,792 hex characters · 1,896 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201212080700) = cb01cdd10685cb7b0b47a78888a24bb6 (name+title)
GUIDs: 59
Filler GUID seed: new Random(117).Next(9) ✓ verified
Run: Run 39 (seed 1,106,402,812) (seed)
Draw: 88 · predicted N = 59 ✓
Machine boot: 2012-11-20 22:02–00:02 (seed = uptime at app start)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 4 · 0
Tags: automated (decryptable)2012Encrypted masked GUID listkey: name+titlerun: seed

From the post to its content

As posted (encrypted)

0F143B75E3FA547D A6F017853C1C242C BF3472DA453A1376 269143FC82508B21 E7FAD5758455F677 04E7D58986195149 ACFC69787FD7ECD6 A285B2EA086707D1 91CD38D2725A8478 D173FC1F6A4F08B7 95A693CAF8CAF937 0C4ED15971F884CF 4811E471DBC40076 13D0E7D23A2BC260 C902B8F0EF512335 566AA7C6BFE0BF66 E73085EDC04D851D F701ADC7248B8F4A 9A0F777A5DE4740F E989581C9DCCB750 4AC87CE5F5DDA232 E2709D32A311B7AA 3B3401CE5C408E9A D053784EF12A79DF 378AA95F4ADCD3A1 3319E72929CB67AF C41A16CDC1796E1D 6C914FF4F78DF7D3 96F7F4708878956F FD3E023BF48D820F 90B204981DDF21B9 26F202876C04AA5F F75360D05E03C1F6 5ABFB59EC0892D23 331B0D7C411BBCC4 D48DFA369F767F4D C716CEA428FD4D5A 7F9BAF1DC4B7139A 387021BE911E0273 23175F56BE4491BE C53628EA9AF4AEB6 C3C41226E2F119D9 73FC99C4B3350732 0E077C9D72FFE422 94526CD1C25B34B0 296E4B25BDE6A874 E9C9AF45F0E57F11 83B6981CBBBC0994 0CA00C162846A31A CEC8489F879D25EF 3EF2BC3423F1FA20 7E288FA7842AADE0 DB248C332D00B6D5 745EA266AF487782 6E114CBADFBB1412 E61D88F9ADEE5E35 C828F7523DD05A41 41654B7109E31DD4 2C8F03CDF3FB637C AAE8D4451E646CD3 FF425BF75E24DAB9 7411398087C088BB 1D520CD296A5E5BB 8E8C187B3C5B6012 C2BC07463201B9D6 0A43768959A062C8 6C68BA8B40FC147D F63098AE3366EA1A 45E638D56D2F1FB6 39DFAEB7491B9DC8 0811C3C2E60C4658 183C9DFF86293E1B B0E8C28835217D0F B131B83D511A7FFC F1A5A7B4F491ED19 B4C406CF2DAE05B3 1A4A3E7C562F8E72 BF5077F73403ED9B CE354766098D078A 6F1209A2A1736386 EA9149B50E8C7588 DBD437316129FE78 800F7429F20D1709 495558F7445CE3E9 C71D020C93909F68 870EDEDC2C0E8E05 9F9E9E4C1EBCD750 16124C42962D7177 19A8F169545DE357 5C89EDEA09392A45 CE9C59D78930CF8C 8097733410E75712 FCBC81042E10B761 994B1CAAAC11AA4B 0E204D0796DFAB0E 33DB9CAAD5305DAD 68B0F6873EF5C583 71E86DDC85286DBC B226161BAA1CF31D 4FA0DEFAD839F037 AD5BEF5B5634CB54 5CCE89E047B261E0 3125CE756421D576 23AFF005B5DCD197 315CC86F758285E5 028EB92B4844AA29 6BC5683C627B38F3 1FD95E33628C087B 920DA36718217F8C 5C9B7A3D961C61DE AF949BBB9F0F1F34 10EC7C8A061E3FD8 A978862B8E8861C6 467BA62DCCA453A2 E2BD13B275EE7B3F 23BC8C8C29D7909D 4880A85583D0A511 C4FB2FE2FF31BF1E DFD111E112B5ABEA 38CB7CA3C5ED41BB 90E29BF372CCBDE1 3B52D91F217C15C9 24F435B3F61F4528 40EB71170824BB9F 5FE03965D71A14AA 4DA024B5EF1F4654 89BC8AB2609E4251 E1C107857467EA99 327B5B5B92309DBD CAA110B9C9B9AE1D 284FD4C8E4B08EFF CAE0FBCFFDC6F3E4 4F4C24C178EACFC6 DB6219727D91750C B653D266BEAE322F E0EC1726CC42076C 2580884FA466D1AD 284B07EC26D761DD 564786466B7BDE00 881314A0E51ACCF4 A5A437AC757D8212 17AD390B8A2C5D35 1F998A366FD5AC46 1B927525DCE02FC4 6529A7DFE167580E F875348F28C44333 AE4FF25F358AE705 6E140AFC3FDE816B 2F0C44EDD12DD91C 988EC54D8A3F0818 BB39F49B58A6C6E1 963B7E7F252D5362 506C939959736054 19E6E06120F6962C 0B3FBAB1ECEC5BA1 BDFDA8330DE99E43 9885FE7595123874 0DC32EB8C052F2A6 D585D69BFA2C9BF6 39145AA8C3078A1F 86E768CBAEA1D1BA A355A39D1E1458BD 49541D840750A541 F2E70732000B338B D7A948584503B65C 7773A8545AEA5B9E 88B924FA94873BB1 E0D7342A97E9DBBD C3C01E3EEFB678B7 F4CE3B4FE1CF2769 7FF92439611AB9EA A13F1F1AFAA70F78 BC8251C29E1E276B 6C86781B90F5159D D7DE76DC9D1BBC47 BCD062EBBDA06FD2 22EF306BF7C644A9 23A0BD5FB6B6D066 7DF271E2A21E8EF6 CE80E0E5E9499B3F 62B91D434894D7C0 9176B1DCCC0DC2E5 10B690D37A71839E E1E3B36E315709BD 5630B2320CF1E960 314B16B3F11B47B5 55851642F67DA703 1B1CFDDE4374A1F4 941CD9CA9EFE2463 D544B5DC225A6174 A2A629EFA0D2C90B E8432411026A0376 C12B01781DD9F75E 99B13772F296F311 C134F99CAB881BB7 CA37CBA25A924D84 2CBEE8EC40341D85 F2010B616C72062E 5664BC5FE2C96757 361E51AED2DCD854 F1AD11340FE0FD39 DA62C71E52C2FD55 83741AF0F8312F52 F902FFAFF35F23D2 92F424FE2851E96D A21C62C1563C2ED4 C79044EB97B84541 F5DD4403ED2D38B1 A68DCFB001BD25AC E18FEAF32F564495 FADA03C95C59C476 B6C7FE6525816CC5 ACE03A60E1F253D9 85F05888A3C5FB1A 33DAD2B24DECEEC4 26E59FC00EEE74EC F89CE26C8C83AD2A 9321FCD6B7E0D195 D026DA6BFB66D3B6 973372A49B99EF9B 244FB53C4352FC06 CC553C988ACC9071 3B2A98ECEC99B8B2 6EC0301D63A0F717 8DC69E4F54B7549D AF737566DF1D17EC 0B6036D819874614 A9196AF428DCAFF3 AE0C072BE625B3BD 0FADCE6EE1590995 2482A25466465C2D C0199A503100BF57 4F40689C2D883A15 C35577E2B51D2884 709C3662320F3575 EED1485FB8C47BE4 C94AECE3995F13D1

Read the ciphertext. Strip whitespace: 3,792 hex characters = 1,896 bytes = 237 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201212080700 (name+title). Key = MD5(password) = cb01cdd10685cb7b0b47a78888a24bb6, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 59 GUIDs as hex (shown below).

Decrypted: GUID list

  1 20cc960c-e6b2-72a1-b3f2-4ba8a9dd88a2
  2 7a265ed9-a564-13dc-8e36-1e16e75bb377
  3 9821aac7-4c98-4130-afb3-d30ef223a713
  4 2491ad67-642d-4bc3-847f-fffbce217bf7
  5 ce979803-ea40-059b-8eea-da992a7805fa
  6 689cc258-c555-711d-87d6-f62b4e6b8bab
  7 d927657a-96c4-2fdc-8aff-fd23bc9f5854
  8 6e1e34cd-2013-1332-9c75-b2f4768e8a2f
  9 6888a560-3b94-4ac3-9b30-b8cf75676329
 10 c41a5c8e-cd9c-3ff4-bb47-6b9a3890f870
 11 2ad2a04e-b2c4-43a6-8bdb-2f14ceef2e9e
 12 6f17cd8a-07f1-7820-bd96-af6476c3f769
 13 a19aa9aa-0531-0024-a574-6b883e6d97fa
 14 4a63cce4-6387-3cbc-839f-ddfb9a869b41
 15 652c2606-b549-788a-846a-01514b5120a5
 16 1192038d-7e27-0e69-9e14-f8febcd53368
 17 b07c2173-3e31-0c4e-a049-e3b5602291af
 18 2441161e-204e-431f-bdfe-7a963e0bd144
 19 e63a6bc1-ad44-76ae-b660-37a20c76f956
 20 10bb8bcd-3598-5892-a149-d1af697caf4d
 21 a530ad91-58a0-34d0-b2ba-596451a94f69
 22 9277ebdb-7f25-481f-9d17-f46ee34d2d4f
 23 14cbf263-e32c-6d10-9f5c-109d05c77c85
 24 0e38d45b-f8c2-8d9f-b29b-c39289231a43
 25 5f87a1e4-09fd-1410-b526-e8e054505a0f
 26 177ecf81-951a-7ff9-aaa9-86fd13918b86
 27 04cfc4ae-f38d-4f43-99d7-399bab0fc02a
 28 b940128f-4516-15f9-9b96-93ede98abe07
 29 338f4a7d-761d-7f95-84cd-80d0bc6982b0
 30 cfbcb402-3ac5-209e-a7cc-23f3b58f6f58
 31 3dee58ca-2610-31b3-a4f9-e8a7740426e3
 32 0957d1ec-4de7-28c4-a6d9-8ec3ae22da9e
 33 001d2cb6-93a1-328a-9531-5fe2c8f93c99
 34 e74f15a6-912a-8db5-8bac-0edb0a2883f1
 35 4f8064cd-38c4-445d-afa2-d171c519a7b8
 36 0968cd01-d903-7bce-b1ff-9e26b910bfc8
 37 d7c6aa8a-3ca6-87c9-812b-f8b2a8454c53
 38 e25ef312-9d93-1a0e-93b4-822eb413b687
 39 624a0806-b1cd-3ce5-8db0-da6bdf66dd92
 40 f2d94ca7-9615-3921-9af2-e90740e7f476
 41 afc03392-ed19-2e71-9e6b-90d8c2236f1b
 42 c7d08dac-e032-1bdd-b1c0-b4be3a4e73cd
 43 168a5ffd-cc3f-0bbc-a675-7f4cc5e8ee4b
 44 8111627f-22cf-476f-9342-d86807b49896
 45 61dfd95c-9160-53d1-9454-13b89048ef1b
 46 db1f5ae5-bf0e-700e-bf10-264ad6698f6c
 47 b7f91175-dcf3-1014-94fc-30d22480c40d
 48 110dbb4b-61d2-2866-8479-b0c117430096
 49 33d657c5-22f4-587c-8543-0a17ccb518a2
 50 8387e5c1-cb46-68d2-914b-a9be32c0b21c
 51 6620f5dd-7ba8-084f-8e9d-f758944d4736
 52 b2fe08d7-c81c-4d2a-8761-651b9221245f
 53 22a31dcf-37c4-59e2-8465-16575f9c589b
 54 19f3ccb4-1f13-25de-8a20-0d7206c4a250
 55 b7d8675c-33f1-5561-8213-3a503c114563
 56 65d880ac-0172-247a-84e1-a16ff39bbbac
 57 85fc765a-9c12-37db-a75f-19fa6014e41a
 58 168411f1-45a0-5507-8ddf-9171515540c6
 59 bae3b7d6-edae-3553-bdce-d00e1735d766

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 71440721434703700475346817417232384781332104571256045252353. Exactly this sequence comes out of new Random(117).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 88 of Run 39 (seed 1,106,402,812): new Random(1106402812), Next(8,64) per post. The RNG predicts N = 59; the post has N = 59 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-11-20 22:02–00:02).
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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