201303210500 1aq1td

explained decrypted filler

seed 568

Metadata

Post ID: 1aq1td
Title: 201303210500 → 2013-03-21 05:00 on A858's clock
Posted (UTC): 2013-03-21 09:00:59
Timezone: UTC−4 · title 05:00 against posted 09:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,600 hex characters · 1,800 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201303210500) = a5a959074f6fdfc403f2da73428ceb0f (name+title)
GUIDs: 56
Filler GUID seed: new Random(568).Next(9) ✓ verified
Run: 1aorpo (short)
Draw: 7 (assumed: numbered from the first post)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 72 · 15
Tags: automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: short

From the post to its content

As posted (encrypted)

1683EB86D8D8241F CF9A4CDCD49EE54E B7D56F7F2E6A7CC2 BACDC3828FCA5B02 0FE67A7215B34954 C67AE8537AE00579 90822FE0AD900086 29F8AEA753C170CD 970C4B78772803C6 61E9803B029C0E6A 443FDA3AD5B2F7A4 8569294482E2525C F29B994F6EE83D39 A1E9099B59431A3C F8FC12443A6FC96D 386CEF5242A09E2A 22D4B7475DB9870D A53F4A7F3B39B28D C69C8A3730086C2F B109103FF823B818 E9832FEC900C7B35 14896070CA7A540C 9C2B650B5F5389BA CD83BB1C5A648770 95B3C766FC093019 2DDDA0672E7F5EA2 0205082310D3DCB4 AD57C33700D6FF98 179D50F5B8598778 D0D955CDF917415B 0E5FFEFB7DB6FBFE 5F5E23844F721C69 09E9CA0CDCA04EE8 4B7B9D0AA5EC4F83 157AE93AC8866333 E1ABFE820A929D45 8D224F5F62B7A080 CEDBF6BC7D7F6BF6 F66579857C8E0F2A CB3525E1E3D19284 4AD4AB00921FCB0E BB4EE23B6AAA9D17 DEE94968D1BAC0DF AB9D883B3EA7828D 7CBAB96502186110 D93A01B66BEA07DD EDF062DD775B1D15 FDFC640363198849 88CDB60F713DE9F1 3980CC9BBF0CA611 C92B9143A567C253 F67BF35CB82310DB 928C52C665EC9B79 319D20A00FE9DB02 48605D6E3C7B37BA AA6D9E95C50D4658 1AD867994A8B60D7 A2311C336167808A 1288C5858964B028 5294388CBCC8BF46 137842AC54EDBDF1 541F94D530933D85 A6062EC66DBB10C8 08173E984BB99AD2 6DB703FD104D5276 E0A46303BB7103D9 C58C3E1114D312E1 53A7628AFD4BD17B 7633EEC2EB3F6BE4 974307F0C6BF6AE7 043374B687D48E05 A6BA17C06E4EDEBE 05C9B681EE8D4ECB 98220C1F1B71ACEE 77ECD5EBFCD00C92 4929374FFC4A6456 9877D1A4709A705E E093F03E1D25F6BD 0862A92C1742FF5C 0A339A8316E66FEA AC8331925F0279F8 22ECA4A46D404DC8 55A18C70763722B1 40D3481CAA2B287C A5493BCBF29F4030 862C40202EDF40A8 B1EF19632D54F7FF DA45E325DC671FCD C2C449EF63564A64 BBEE507C697C9801 B2310496FD879AB2 5DF0848F20ED57F8 7C0652DF6E40B194 BF286D84C7E22550 295C411955A5E359 04BCC5E8CBEE5001 96D6E60E487CADF4 820D8FEA0B1EBA89 AD266A6DD81C11CE 74C3F18449B5820E BD220A99D8CFF0BA E70596BB2B793AAB B28BFD4EABECEAA1 091E0B3583D0F780 F6FA7FBD35D2A739 50538732BC67587F 750779982CAEE857 70266630CD30D323 476D52428A1AB610 5090867AF29D5929 D1F82CB7EF95E789 179BE4F7D254A373 64D9EC7347090E58 FE8BB312C0D6FB2F 59BD28618A70E08F 50013A6272186167 388551DC84EB0280 E027822678E4165C 59E92AC45C4103F0 B2F3DD4CC63FE09B 5B499155270E59CA 46D9AB4BBA784204 F977210EED2D442D A57C410902764EE0 60F26CAA374B297C 878B8EBD1B37F1AC 9E02F218BE45AB06 9D52BD994B57F8C9 E887CDDFBF151848 0F8D883C363A8081 963B045A284FD7E6 1F3E4A401CF2D3B8 AD7B7F29EFD0D311 300905BEBFE33BB6 5C273128E5E17A61 12EDA0F95A95118D 36CFDFCA5249501F 01BFDF611405E107 8B288B5C8566780E 6BB3A247C6F19BD3 51F1916D1465C750 8407C6AB67C09AAD F888F24D344AD0C0 23433614A86F48C8 BCC246A06A4046EA B2BF7C85D7A1994C 1DEA276D8B0B1122 0CFF8CBBE3FCE690 A48B1C0F19A8DB18 C0C20F2412A8B49D 0D5DCEA42BCE97CF 8005F779851DF4EF 53C3F799F00BC121 C593615C613C1EDA BFF2F0B9DBA258A3 454A4A2F8A1A341C DD289DA8C619C706 D262AD74DF202501 012A726D88388C0E FA90041CD9BEF456 45DA591F67A2081D 55B4BFF4067BE54F 7B31D3DDE267C44E 6F7A632EC20EE204 C188CD1CAB1DE140 BBD86DD11A9CB263 B95BFD19D63F0CF8 EDAE3DD58CE1E5C4 36B367B779972BEE 419BDEEBD12DAFBB 24CD14C76FB8AD1B D48D6236CC0CDAA3 487E105EA7C008B0 1D664671461ACA86 64480184737910BC 3EA093AC909D70BB D47FB3F0C2C7C8C4 27A944789CD49F0C E3FF47C957E789D7 C058A7C9B42E899E A2F3BB62FEF689F8 B1BC95F1A6C3F9A8 92549FA841C144FC A29C8B1B20AD1202 343D9D6BDB537FDE 194E1B6C7805E7AA 64162D26D6563E83 C813841AE86D7D98 63F070998AF4131C F45301B4E0D20EA1 751C3BC3146A4279 815B177E0FBC8E7F 9813D3545C72D4FD 706D9E2E6B25F54D 1BDF6C6DA5FAD39F E3AADB7651591CE7 48E7739AEB08462E BD57F02069FEC998 BE10CB4F56DBA67B A135B7B75B091762 33D3FF3A07DD74C1 34A18F3D6029373C 20E6F773739DFC11 33C0F2E35DA97E1D 500E8223210A08F4 9BBB7BA43DABB081 D98EC072E522014D BAEDB8F796A901E5 3ACC6ABE4364DCB8 BF3A9A251C1C6009 3310149C7619AB12 E94948EFEA489707 0F35C0BFA3F4DEBE 826C02D52F2D585A B5F8DB13F2A94A2C 36988D1C6115079E 6D27FB20F7CE5566 4EE4393222CC708F DB874C31C64FC69A 9DCEB604D3E9E019 1788C5B090BBB41B 9CD39FD922A5F49A EBD0894201A5AD47 4B2D41986E0E1642 07B67AACB87BB762

Read the ciphertext. Strip whitespace: 3,600 hex characters = 1,800 bytes = 225 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201303210500 (name+title). Key = MD5(password) = a5a959074f6fdfc403f2da73428ceb0f, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 56 GUIDs as hex (shown below).

Decrypted: GUID list

  1 09708164-8091-4cba-bd7c-5207262e50a8
  2 384a6450-1baf-490a-a79e-39f2bfe7ca55
  3 0449e2da-2c73-79c6-92ef-7070e7fcf951
  4 b05dcbd0-f94e-7b7e-b28b-9ebbd08294bc
  5 77d2ee76-fa44-5fdf-9e8c-677f9c78d8e0
  6 9dc38788-9ba1-8b0b-be4d-ee9b1a9ce6cc
  7 4a8d2197-f5dd-3ddf-b4ec-90d029c2d14e
  8 47ead25f-519d-3a94-8995-462d641b571b
  9 8450b936-b16e-224b-a139-e903b7245262
 10 6e80941a-4bf3-6046-ba1b-464444141d6c
 11 43cdcb8a-7688-6245-a495-533d20fad81b
 12 593ddd35-ed38-8561-b5f1-7127a815fe35
 13 aad3f687-26c6-04dc-b125-33b7eba064a6
 14 1587b75b-4d7f-8999-82f9-04656c90141a
 15 deb9c4b1-4cf3-5b07-9e00-55d3349f07b2
 16 29c16208-005a-69b9-80e2-a52942ee0f9d
 17 96f86cde-9966-52e2-a88f-22c79bbee7f7
 18 e3cf6e60-7c86-1594-af00-ef289cbd0124
 19 9beddaa6-eee1-02f2-95ee-251d8add672a
 20 1e9cdaa7-a4cf-2097-a3ce-522ad6ab177a
 21 ea5fa0e0-279a-230b-b7e3-eb91ff64e7d7
 22 0192324a-3593-1a64-8030-e22381e99f2a
 23 5a2d74f7-c249-8a9e-aa7c-005972b2378c
 24 5597516f-805a-4460-b1bc-c8982b26e1bb
 25 1a2e8a81-6903-31a2-86e0-fa232b0cd959
 26 a9a042e7-bc80-7d4e-b847-ace1c505d93b
 27 00be840a-a97d-293e-9606-aebf1ed5626b
 28 907b48d8-65f5-58fb-800e-33d116a5e417
 29 d768e478-8ac1-33ed-a970-8f77a950a874
 30 d64ef75a-02d8-4b2a-ad72-41432bbe2c00
 31 1e181176-5c2e-7ef1-a34e-89066d53c86a
 32 c81b4b65-0af6-0868-b089-fa16c5d3669e
 33 c3307c87-b124-64a2-8c71-18773291de00
 34 8983366f-7745-2b36-8dbc-95eda24e3c4c
 35 528df165-abcf-8193-9b44-e304ecdd742a
 36 4f589465-c66a-31d1-9ba7-341178ac0e7b
 37 83220aaa-9477-41df-98e9-febb88f1d50f
 38 19b591c6-4864-4bd5-92e3-8afa05ef0746
 39 1654e50d-02cd-5190-88d2-bc00ad9dbb53
 40 361f7f74-fe18-4065-8de6-839dfd987e2a
 41 cd7238f9-6b6b-5527-bc51-13ecc0dae0fa
 42 a57ea2f3-77c3-41c0-ab5a-0907838cd021
 43 88791858-9afb-007f-986a-dcff82d54e97
 44 3504c2b3-3938-4e3e-8004-4a002a9c1a85
 45 29e5eed9-3ba2-3d34-9455-e253f0608825
 46 1804fad4-1fbc-8ee8-aeba-a644f9be5612
 47 10a511a1-b03f-5ef9-9f10-6e826133b1fc
 48 5091ac18-7ef1-39f7-a85e-0a826ea60012
 49 e12c7d12-68d0-5599-8dc3-24c19dd3850e
 50 d46c5283-40bc-2ea1-a367-b01a9d36c479
 51 3cfce536-fbee-35dc-b8ca-9c694c7167f5
 52 c5584a23-3f9f-6117-bb49-70497fb3476b
 53 a1d1d104-cd94-3d21-8f36-306fe12e9be1
 54 9f407cbd-48b3-1483-a98d-e6398163d440
 55 da211778-52dd-8146-b4e1-f56004a61326
 56 7a30d0cf-97e0-2e9b-bf37-191441c550ff

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 44775833266808565102218437253470628344545404385352363182. Exactly this sequence comes out of new Random(568).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 1aorpo: range-8 piece (7 posts): undecided; candidate seeds 643,201,468 / 636,247,656 (Mar 13 Patch-Tuesday boot) / 542,563,171, 3 hits vs 1.25 expected
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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