201210042102 10yvm0

explained decrypted filler

3DES(name+title) ECB, 57 GUIDs, seed 823

Metadata

Post ID: 10yvm0
Title: 201210042102 → 2012-10-04 21:02 on A858's clock
Posted (UTC): 2012-10-05 01:02:45
Timezone: UTC−4 · title 21:02 against posted 01:02 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,664 hex characters · 1,832 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201210042102) = 26101232d523ba85ae4a5640785c32bf (name+title)
New here: Missing from the community archive; decrypted here for the first time. (new results)
GUIDs: 57
Filler GUID seed: new Random(823).Next(9) ✓ verified
Run: Run 35 (seed 854,622,578) (seed)
Draw: 195 · predicted N = 57 ✓
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)

ABDE733A85B5115A 35FA54950265523D 8E0E5546F3FEFFD1 7C51045E91D335AF F98E3C73235F9DA4 5D78FBDB026AA8F3 E31223BCB1FF4CC7 0C89B71EE7CDB4F1 EAA7D656752901C2 FC294C407594A70B A9DE1C7F16E8311C 4C814905EAEAB8A1 792BE0C885748A2A EA5AC318E4D99936 C38D7B995EB5804C 2A12DE3C51714E8F F9945F77B92E314E 6E672B5733ED7222 342F550735E03DD6 CCCB39C23B60D8ED BB70D49CC96BD0F8 04508471DC62C9AF 9B3B5C68CD37CF32 4569AA9004C52A30 578ACA02A61BE8A3 998A2B775987D438 ACBAF2E49C9E9C3B EDCBF50BDEBF0340 CF4167EDD4216CE4 B6AC13A0F6466D04 E6F815A3FE9F1242 5B351A290A9B68CC EDFCD17429E5489B A0AB6B1227D6FBEA 0BDA8E3B4D0B0388 1F2E547DFE131D44 652F46F036D411D4 21EEDDF8EABC8FE5 A45F36C43B749FC7 455AE4E8DC0B2746 682B0BED566E864E 69F318FEE2AEDC29 CC8A5D89F40025CA 45D3C98246757AB7 3E2BE3F3EFFF3F4F 6F5C12B82AA16025 F20C53D360DEFBB2 8F3590ACA2B7449C BDF8240B0961AEAB 3F58155CD9A4578E F70CAA494B59247A 63927721A5D4AADF 0E43FA744CE1D6EC E6C2A058DFE3FD50 85639C33211AE53E ACCFBF2D62DC7797 10EF0B0D20F0931D E15F05AFCDC899D9 C330D07E0D081437 32EA9555799DA6FF 51CE94D0923A4F19 4434506C07A4B0FA 546981D273CAA7C9 A839B5D721EF9BB6 1BD8C27741D84DFC 41AE2761921D74DD 8FC42670CFB9ECD7 BE6B0F5F7DC6E150 8CB3A3587AB7FB59 24B2A8B75B759E15 37788882DA7ABAFA 803FC44E9FCA1F95 79EA2F6D38350491 0936634BAB31D848 8E61DA4F4F3D30E2 349838401A21AD13 6F5D0349D1144218 2034167E722C3E13 EA983A94798E8DAD 2A64CD62583DDC3B A9E8721C391322A0 3B59D29BDE8EEFC6 F3FC8C2EE33112C4 9A47676369EBE6F7 62E8731CD10D1138 378F3AB47A474EFD B1CF86B91B73643B 4C8265436177334D E210F95CE7FCF1C1 670BF2D618BB8254 7ECA52541DCEE188 AF987A6458F3EB30 A46A4FD12AC5C4EF A4A4FBBD51987EB3 90AD31F1A8A47172 13BF1B164C964979 DAC494F3D3BB56F0 65E11B5CB79B7269 263852B8E17277C8 ACEB47DBCFCBA977 B65A87E6E5CCA546 B59E25006D0F3B6E D4966895780FFC39 4464E2728A737FFC F4EF8DF88B7DC2CF A803687AF7B13E11 8A6E05B7FF71349B 2D7E291F93F778C4 0C2177050BBD940B 9E4D156F72612C22 72C445E843A40712 BD52AD9D32E8F385 F422E1BF948D6E8D 36848FB9372DCA95 3A1E40929126FDAB 2B7CD3BD8FDF9FDA D34B4AACD67757C4 9D0C2EECEDABE0AD 75D55AAFCEC08965 A17B5696F9B47A7B 1004D8CFCC271ADF FB4B2786F8AD1747 A12E903AB2E16E93 5FF982B355373E51 FF75275AAA1E133C 4EB9F82306287925 B84EDD26C23D3448 F0E9EC51FBCD8457 350246E081D669E9 C80963B5BBEDC55C D3688907CD886FAE 54199CCD234E9E7C 841D41E30DA781D3 E9AD6BD71B151C63 46FA9A279AE50F0B 8098D9E43F96DA9F 7BE9B274E2C98A83 C06A4F3D5217B5C4 325466729DCD8A29 3011134457FE4C92 BD2F768F09BE901F 4088A350647E07D9 8BFFB3F1ED87E6FE C282F478354605CD 0398805EF45B5468 FF54BEA2A994F4DC 3E72709170CD4525 51D188A7671CEDE4 F8D3E3A1FB79568A DAC230C535EF73B1 A548C75E65D01BBC 9C2E7D5F0B0C1CBF 30E953897EF5E079 A309724A60843217 87C516CFD3FE0C15 15195A68833781F3 ADEE9C34615E6640 1E197945FE295FDE 2E5183DD5D28F0F9 8CBB6DD07C60D047 42BB061641349452 5AE8A2AF8CD7D57A 262081C1083C38FE C23F69F32A1A081A 24D1877C28B44DB0 B9F82C98C00FB686 0F2D2D6981F72DE8 4654D7ACF27EC6B1 5ACD5523006C93B2 579E8E60B5E8BB33 721F7EABA9574FD2 88D45578A8576B41 B6EAA08E08C6ABD0 B7A80F1DA6784624 445AB4DB8E8113F6 7AE96486A01CAB46 E8D54850699838DF 38BB5A70448D5D6B 62C51712BEAF4911 98EDAAA7D36B936F 390FDA76C131E6C7 BBDF9C21D3783538 93CB1DD5FF834BDA F6CDA78368ED597F BE22287413679ADC 7786ACDB34E5495E AD1DDB95C1552B20 436F4A91E3850741 81918F69B3B5854B 2C53B75C0CBA4417 E229BED44DD3EB15 5CB14E42DC790711 81D7A647BEBA322B C95CF8FA560CCCA7 6C95D109282BEE8D 520D66D82C466A14 232D3CF7E99C4506 CB9CA350684E1074 0E2691D1C0A0E26E 44ABBB765418BDFE AB3A36FEB3ED2A25 34B8E010D97996AE 8CD9F729153034B4 62792DE14620E6AD 12B084966289800E 9548B618EEB5E3F9 5B0A769CB07774C8 98418A3FB9E69018 0AF254B9A483DECA 432D2DE79FA65DC1 F4CF1DBF3DCB9D31 88F87E985990ECBB F0F0751FCB195B47 413DE056BC2ADFF5 B29E1B7DD7561AE7 3B538F754CC32FC3 0055EF353514903A D35C2FD3CEB28914 BD71AADABD4206B8 000712003CCA665D 78F5E0771ACFAB83 DDAF8F7AFF8E517C B144D546E28FBC04 391E8DCEA8646746 9A8A6BF5DA4CB450 F6F55C4CD5C24185 5170DC768BC9A118 79664EA10DF7FDD5 E8C50732721BEA24

Read the ciphertext. Strip whitespace: 3,664 hex characters = 1,832 bytes = 229 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201210042102 (name+title). Key = MD5(password) = 26101232d523ba85ae4a5640785c32bf, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 57 GUIDs as hex (shown below).

Decrypted: GUID list

  1 34c8a397-7d0e-6488-a42f-333fb86142aa
  2 c4949005-00a2-227f-b1fd-3d4466ed9825
  3 12fbf73d-bec2-052d-9a6e-3b06efe07eb2
  4 20f68fff-cf28-1867-a046-033199f4c438
  5 6ab536d9-3c72-716b-a3b4-9dade238a348
  6 8ad25c01-adf7-65e1-9766-354af017bd00
  7 7c4b3e6a-41d6-5ca4-8f88-65bd56eef9b9
  8 2c51d434-ac09-279f-81fd-480cbeb4a59b
  9 48cc5dcf-14a2-7264-b28d-939acf460537
 10 f68c121e-fe17-61fe-8f8f-980da3c14981
 11 8b613f73-d1fa-52ab-98d2-757daea31232
 12 211abbc7-e5cf-8454-b250-357b6782f647
 13 9f2dc2e5-477f-3d17-af4f-e6ed19b8a982
 14 f1cb5a1b-6ea4-5b33-8770-5a6321b5abd0
 15 52782c2d-27e9-0eb6-9dbf-2f91fc897ecd
 16 8894c457-5daa-0e69-b50f-4b8d132f279a
 17 507c8121-ebf1-7a8a-a563-757372bc097d
 18 59260d2b-9bdf-2ece-9b67-3197fff71616
 19 1dddb37b-d787-8662-9feb-74efdf0c311c
 20 625a3bdd-f722-80f5-97e0-43681e54d299
 21 49e7f20d-6a83-117a-94f6-7cf6cb952f31
 22 06bef38a-25a6-697d-9d28-6e5ab82705de
 23 36ce9467-ea08-0bb1-b8b5-47e3df23161f
 24 7e6adb26-4fb7-4ad9-b942-30372aab08bd
 25 83ef56e4-2bcb-380e-90a1-3f26ad267423
 26 0214e09f-1d63-7e00-bd62-117c1f2999b1
 27 cf9e753d-e1f9-46f2-a955-a828d8e3e1f7
 28 4321b7b6-1f3e-524d-9162-ae2811474778
 29 fff895e8-32eb-73c1-8a1f-b790a7726ac6
 30 1ef06722-9ce2-84a8-a1b1-494668a480c5
 31 8eec28bf-68e2-09f1-8e13-00904ecaa11b
 32 0fb537ee-c46e-2732-b74e-49b073d996cd
 33 7c4bc78b-fd0f-2064-aedc-a6ab06d0c119
 34 e59666df-5400-5073-b387-89ba4b3cb4e4
 35 57804fa0-062b-01fb-a3a6-0841155e593b
 36 2804aee5-a181-39ac-88ce-eb6b031fa8dd
 37 6bb3abc2-0bbf-6876-b03f-1a1b9f834de1
 38 509a6cc2-6f0c-24e1-8236-0aa6ec52de98
 39 832b4025-7845-26a9-943b-31c79f722bce
 40 107a4a7d-7a66-23d7-b077-ee789f5bb3fe
 41 d59e937f-5928-22b5-b71f-66c437eb8b8b
 42 be42cb87-2e28-3180-b195-8593451e2a12
 43 d0c2a2f5-3ee2-8f2d-84c3-46ceeb796b43
 44 76fbb8f6-051b-38e1-92b0-b5b8441489b8
 45 6cb14117-b2f4-757f-a051-89f84fd154e0
 46 867aee83-0f60-5a06-b2a3-a796b99d03fc
 47 7bb1d092-a049-3e56-8cea-4e9f9f51fd15
 48 7b97c8d1-f2b6-399c-abb0-05b3713bedfc
 49 7f5c53fe-cfd8-436c-8919-d5494baa4364
 50 5ff33f9b-ceba-8220-9e5d-a8d3e2131176
 51 93b37814-2527-03d9-a867-d8b36628022b
 52 8f291927-f48f-5237-b950-9e32215ff493
 53 b6b48b25-7d2f-6083-bf98-0ec75f09e17a
 54 e5796f02-6def-1c52-957f-62f1591bfc70
 55 4e32eb7f-8d2c-8266-85d7-f4536438bbfb
 56 3df0088c-e0f8-8351-9533-380197297fc5
 57 989c0077-fd3d-1ad5-a57c-4c7bd9e0bff1

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 620176527658350072881604374578022503622223837533480561881. Exactly this sequence comes out of new Random(823).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 195 of Run 35 (seed 854,622,578): new Random(854622578), Next(8,64) per post. The RNG predicts N = 57; the post has N = 57 ✓. 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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