201301041159 15y7po

explained decrypted filler

seed 775

Metadata

Post ID: 15y7po
Title: 201301041159 → 2013-01-04 11:59 on A858's clock
Posted (UTC): 2013-01-04 14:00:00
Timezone: UTC−2 · title 11:59 against posted 14:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 2,832 hex characters · 1,416 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201301041159) = afe8dbdfc476f604f75999ebfdcea06d (name+title)
GUIDs: 44
Filler GUID seed: new Random(775).Next(9) ✓ verified
Run: jan2013-A1 (short)
Draw: 3 (assumed: numbered from the first post)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 15 · 13
Tags: automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: short

From the post to its content

As posted (encrypted)

0F59FB9074610641 94C4EF32604B4AC3 02EA8BD7299ED7D7 659F7B629DD86325 B846A5D99381F744 FEDA3760028D3FFB D2989DEC5137535F 4208E7E7D53C5A0A 0583AE79B6E69611 1D32B85A19FB008B 3555734225C35E9B 501011F8039DA3CA 8451B3BAFAC25C13 711784C584692549 A9D9CAE8F35B1844 ECE7C14A70CEFC17 CC501D06ECA61064 9A3EF6F4C1160665 E6EE0031897CC5C7 45A9959106D71131 36E23E1F1AC5D8CE 88E075DADBEBE720 22CBD2C731D08235 A127758D08324926 D2A2227742BFBEBC ABB4A5C694ABEB99 B6B6A980D67640D3 ABE8E6D504AA7E74 1783B3ED9B5842C9 1012FA4C7B46695E E4A3CB8EE7B4F574 B97A6503CF22ABFF 287EBAE0E5E22938 023B3A3FC03A7C68 5F4905C4DDE79AD0 6BABA6DA860F023A CF4F8E6826CD20EF 774E3C4C8742491D 000274707286E2ED 13ED1FCA94E9EDC9 06AF6D555546CF30 52E7D1C7F7BE027C 1A6254AB97EE6BBD B121D970D14BECB6 A6ED5387DE7DDE55 EB05DE28DF3BC494 7B288137D606B67D 6FD01137C5D04163 A5DC6F8E1FAD88A4 C53E4CAB8A96BB95 19FCB5336993E918 D41368A728A2CA4D 5E564923C4C93617 469C033275C07C6F 4F9A4E55FC3D9A32 1C5C7FD7982C01F4 579BFD5A2573725D B0C3D2AED2A73264 F26F29A0D90C49D7 ACC065B51C91D4D9 34136E6E831E24F8 CE756C7C40CDA001 843147E096EB9CFE 937458B0DB65E51B C99CB558214629BD 5566BB0C2111D646 2D385666AFCAB92D 38955642DE83FA74 F759696FD2C45EC7 E4AA4E6F430CD9D9 6B476B3D44FF7AC0 9EC8281723D14FDE 09CE547FF6EE0DA1 DE9702A76F020518 D51A41B560411D20 A30FA477D9DDE417 1E8112AE82E92127 7418FD128058E959 0E66AF58929F13E3 D54D98BF06CD8630 84B1F41315BC8069 1BD518F40DEF608C FBB986F0A3E262E8 120828232359FDA2 BAD6FB1A5C2F408F CE118B9635F0FECB D580B780325BD325 C41AD55FFC23C385 D73B38DFBF64BB84 D2054B02463E9AF5 E87930B452AD8E10 5ABBB8A44C8627BA 0F74A73B00211334 EE5766C133E2B4F8 59AE5FDC605F8AC4 8162E4B7D41F1659 53767710ECB26054 611253A654646AFF D0BA3E1EB1CD45CB 98B134DE22362C20 AFCD53FE7086C263 7E155227FAD434D0 1CB92E77B4C1E5F7 C251F3E6DA2F0A81 B636EB4F7DDA1DC9 4CD74850B4D1A870 F8567322DB334E22 21ACD15D1CF4D85F 8E1F2DB5001991AC DE000645EFE8B97F 497B82ED7BA4EC71 7600A61E95548E24 5A31714D54257A8B 3708397B2D18EAF9 B7E1E42734703701 C2446D63713F2337 0D0AC9ACCAE4336E 07826EE5AAAA81C6 4F0F379A4338D418 8AA97EC34CE2D60C 45CD78E6BAD3BB8A 769CBE26D4C02EB7 9D293580E660FBE7 5C058E721B8A326A 91EDE58D047CA82B 71E751677ACB84BB 647AF4FB110EAF17 F649FCCBE4ED86FB A9ED09A6322DF626 17F7C2DB6F4D4AF5 C531C2FEA93DEC3B FACA5A551A440716 553BC2DA36FEDED2 C23A3F485AD05003 99EC7CD549254BC8 758AABBA0A85266D 07D9A6FFF9FC81BF 6A64B0DDDFD0E554 9117EA95D073C473 D3E31ABFB6F136CF 746D91B7F928E0BC F9AE722908ABCC0E F1B4CA62EFBE5046 101FB71C6A188EEF 006D055DEB51E005 CC0F31003FA31081 CD967FC8BFE2F6D2 4B54618F1E5704EE 81B0CD74AFF2A05D 1244FB4C670B3C92 608FF564FD2C2390 D877342193383B18 BA9F61A427E42A99 E6E14C40E46C9E6E C3E861303E5F5402 C76C4BB2BD5F2F99 8A403392FED43193 2A692E50395C2F89 AE826282A10E524C 47531E253CB557A0 7AE22C5C168AB334 D0D91529431EF367 B1E619189782B80D 960B4BBEE1600C95 2C02CD61EDF6AF38 B26A601D947F7E72 5A8CF5BFB569CF3C 005E606C297E9AB1 064C34F49258804F 835FCE713D50C70D A2091E19215CEF59 5C715499E7E53C60 D373051C72201273 5E470A137C048100 6F181F1F4D0D0D0E A71CA7A0E89AED08 1E5B229E19A39694

Read the ciphertext. Strip whitespace: 2,832 hex characters = 1,416 bytes = 177 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201301041159 (name+title). Key = MD5(password) = afe8dbdfc476f604f75999ebfdcea06d, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 44 GUIDs as hex (shown below).

Decrypted: GUID list

  1 c0b4f9e7-cda0-5570-913f-537f48603f4d
  2 5f517ea0-3f15-1aa9-9b75-28612fe31022
  3 c3d41316-a32a-4eca-aa0d-4ad112cff75f
  4 a7489ddb-d188-89a3-bbf9-1d3412378a7a
  5 e91bfb7f-61e1-07e6-8921-5cc7e496f8ff
  6 856f8635-68c8-7ca9-b21f-7c711a1b2a64
  7 eb33a96a-aa31-19ca-9086-331b63e4545a
  8 ddbd4392-c565-2833-b71f-19fff0f8271b
  9 ac830a93-0ab0-72c6-ad14-e65ba6b91dfd
 10 06da1cc6-32b3-0725-8fb4-3cb132d3ae87
 11 2d05bfce-ca9e-2975-9eea-5cb958d4e737
 12 49d4f734-330e-4b8f-b0aa-b2e658a45223
 13 88aca962-37fd-35b2-be66-74ef92d7ad38
 14 f13a1dbc-f7d3-66f6-b4af-e0559e62be96
 15 253e227c-f652-41a9-a471-28a3aa02ed26
 16 3e94a737-096f-0418-baad-b90d8a66a8e8
 17 ddcf3336-25ee-5ac3-8a4b-789436499ec0
 18 facf7cf7-4470-425c-a77b-ae8cece4237f
 19 b6e23ba2-6d52-5cc5-8e94-cd92baf6866c
 20 f9aced49-963a-3ae0-883b-5c5d036d92ce
 21 bec732ba-ac9b-790d-a067-f9e38d4e4413
 22 8cbd15eb-9e78-8fbc-8c15-24342a97fbb8
 23 74ee01f4-56ff-8ee4-ac2e-b718f6d902d7
 24 1f314483-63e7-6dff-8b0b-7ecdea3fa462
 25 cdbc9eab-61f5-523f-8398-b2b179772609
 26 56ef290d-cd29-80a7-b476-5bbb29f74dcc
 27 dad946d9-7fa9-26e3-8e57-8d0a4d46cc2c
 28 b09df1a8-2a0e-77a4-8f78-e73a7d8fd53c
 29 712a0b7b-6837-50ff-ba44-5888f936109e
 30 05c1ae4c-0654-2149-a461-85406c1a0613
 31 3d744045-443c-2955-bf32-195c15521856
 32 646a8702-f10d-595f-8083-27c0fb7c8198
 33 2b5cfee3-8f27-8cb5-9635-61f78a572791
 34 c7578e88-c0c9-38e6-9399-0f24dfb2c401
 35 9696c648-ab36-2185-b1a7-97dc8bb82a68
 36 032bd01e-c9f9-3b3e-8bde-c9d9fe727d6b
 37 9553f49a-3214-080f-af6d-738024c0869b
 38 48e2c2fc-99c3-4307-8d40-877cbb70666c
 39 4f335b2c-9554-017a-bbb3-46afac736b20
 40 56a03924-134a-004d-8241-f6e3fcc4c72a
 41 304f0657-3c62-4c30-a56d-ac9a6f8bdeec
 42 64dce9b3-64ac-0c6d-89e4-8940def81c4d
 43 a7173b87-c955-49ba-8a35-61c6723097c5
 44 27f8572b-6347-83a3-b0fc-3948096705c1

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 51480712702436405453788658275225832304004048. Exactly this sequence comes out of new Random(775).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. Grouped in jan2013-A1: piece A, 9 posts 16-hourly (zone -2); undecided: candidate seeds 162,853,390 / 1,000,996,750, 2 hits vs 0.91 expected; run 39 and Dec Patch-Tuesday boots excluded
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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