201210070925 11341y

explained decrypted filler

3DES(name+title) ECB, 53 GUIDs, seed 963

Metadata

Post ID: 11341y
Title: 201210070925 → 2012-10-07 09:25 on A858's clock
Posted (UTC): 2012-10-07 13:25:05
Timezone: UTC−4 · title 09:25 against posted 13:25 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,408 hex characters · 1,704 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201210070925) = 203e99393bd2b2493ad299d9f651fb7a (name+title)
New here: Missing from the community archive; decrypted here for the first time. (new results)
GUIDs: 53
Filler GUID seed: new Random(963).Next(9) ✓ verified
Run: Run 35 (seed 854,622,578) (seed)
Draw: 376 · predicted N = 53 ✓
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 · 1
Tags: automated (decryptable)2012Encrypted masked GUID listarctic-onlykey: name+titlerun: seed

From the post to its content

As posted (encrypted)

2CC2DD4084901500 272F83671BE1B4CA D731E5085F879319 15E2CB2AAC36E537 E3FA97FB029F1B64 4F1924DABDDE6F3B BB8BAAA5D5306B68 2C3B79366857F682 AF95745F5CAC587F 3EEB1085E0342BDA CF49079647064483 1816247780114A2B 1015AEC9D2174871 AEE0E791E9AFF220 65AC223576DF99A5 1298764A41EBA7F9 B91CED782D3BAA0A 4775AAC0C5E7DD9C 8B38A8EE36CE5D0B 06CDAEB2494C50AB 2652859A133349A8 5CAA19236FDB19E7 C0C851D68FF8E055 F51676C90927AE42 D4E47E18243CF8B0 74D68DC89863D90D DD6C97E0A17EC1B9 D55C3171FBF9EFCC F70F1D78CB486B47 F22953DE61D857B9 AC9F64AED6302655 B7771359C978A039 3E9F788BE3E327D8 0E7129F647649EC0 84FC2B805FCB4D37 47DF498D548BB90C 744CA61E3447A17F 0606C5C6DAC5F4A3 76119856E5874E83 39FC62410F5DFEB9 AAB7CBA871A0F4EB 461F63744DA373AA 3973B01876FE2C30 8EC3DFC741BF71B6 6FF8AA7777F49516 75FD5C2BADE958D1 9A515C0766FEA4D2 B21B5EA275DCF0B5 5F966341509C9DDD D4CAFB2AC49E8734 EFA6253F23F9EF1A 0E9A38FFAFE84F87 F6624529AA3FF9AE 65FA89503E04704F F418C475D994FCAE 6472165AD7E05F0D 89EF9D08D6FCB4DB 852C174531E11E22 91ABF3AA1A9C0E66 17107996748E6A42 CE0CCA38A36DC540 4621EDA67A4004D1 D99B43AED84D68A0 63A50B0EAF23981D 77467BEA439FC261 B3CB28F75806F086 062C760E78DA1D2A 587A6AFB6AF40696 7B9EB3123BA9B8D5 03416C578C5919EC 663CC7CC70ECB30B 43EF1E723A22D0FB C63A857D73C47BE2 1C2CDDEB619CEF0B FEA556A5DBF3B2C3 AF2FBA2E8930324A C5D1ADB40E191007 552638F36999FBF4 1E0CA229D0D8FDE9 E8F6FAC096A3BFFF 4D5329BA98BCA4E5 964364D483F73CEF 5661FABEBBCD44E2 A8B145720FEB4CE4 602CAA48D22849D6 FF929DC480AEE5CA 59B855E6288D5AA4 613EF94C698E8DA8 B37A1C38F4F75F34 564E9724A9811F6B 4B7EA20DDC3BDEF0 B737292A0831191E D43E6575CEEC9F27 A195B220713D1E5B 84997FFFFA60DB8D 235E25B334A206A2 2BD6CB4B5F5946F4 2E9A6859955D6BC3 2EE703B99B2C0FA2 31E15D5F615BAE34 D3F4D0D9036B2BE7 2F63E0CB30A2B1B6 1F8D714A5B5E1208 990BBEAC05C0556A F00528341C81893A C954F903F2798DC7 AABA47EC136ED6BD 1131DCB5E917E65B DC077EA83460F96F 53E8B47888EDEBB1 99C0077EE642536C 3E8E9D2AC28844D6 24ABB7080CEAEFB6 7550B16F984C03B1 23C1C819F17E907B 8E47A667A3EF910F 90F68F6B627186B3 5E01B455708D1A7B E669EA4C5A06E99C A87A220DEB725420 6329FC1796FCF80A 15E544685D63254E EDBEB83549E37F7D FD15204D681A090F DFF81A87A948BB24 2D63F5E6850ED5BE 5B15A0ED14EFA41D EA9DAAFAE4D79542 F432CA1BC6645CAB 0FD52F7061845E74 AEE298875AC23A97 D645A492A4C5A25B 93A4828ED4959D4C D555E82E97D94C55 C3CAE213D998F684 2EEFA2F4CB2B3ED4 0F436A4F10D17E01 4D3BE305CA125CB2 1F25DBD7D13647D3 29844E6C3FBEEF79 BF338E69310CDF10 2AEE56542239F948 0E2B3460B1C9BF3C 9D06627638FA0563 ABA06AAFF88E4D0E 0D2D39A9A4A1ACFF 8B41281434C76E8F B0B415BF8EB9EA5F 668AC42A7A4FB9ED 4AA7C6485513CD30 F7EFB5BBF7C62307 A56E44C35110C780 045CCE56BA7706FC AE01001ED563D5C5 5B6BC2A9A54F3538 FB25059C40750E14 7EEFFAE8130656CD FA2F4A8C86C42544 1DB2B87498338C43 4387ABD74A0AA4A1 9304D5C48A9E92E1 7D74C24E3898F67E 654D9F936B56FACB 522BFDE78C32F567 2712F1833B2F4DAC 9B02890A39EBD1BB 60C65DC117EE7CCF 923BE45AD0154FF4 F34CAEA254915305 F7A8C385849B039C 7144DA139F2B1BF4 9F83641D8B317D59 1B971EE06C019D20 6C988B7ADCC50443 72166EC07C4243E3 F62F73C67E73BC90 40853669A3946698 8DC5C844B20EDBCD 605DCD9B9208E6F2 10A371CA08B9E0B0 30406C8BCC568171 170C556F87AE0360 BDBAA180149EDAB7 49E5FA1B3063FF2A 11CE51FEAD2C813F EFBB2A7EA942FED8 256F3A17BFC39646 B2B768FFBFD371F5 D0DA5745AAF83047 7887479FC1D6A8E8 545D16AB6D891D43 5A641098366E1A9E 7A9F8C48B262E262 B67BD4DD0D3A76CC 158EA371285FCFD5 1C0B030A62396ECA A1F28B235EAAEAA8 0553654376A5C886 8A937C1C6D6EA562 BF04C3654957893C 0251A45410A19980 D9EA6A801DD6B981 12587FAB29A97CD4 F96B85F1B67C16CF B35EC7608887332F E93D17D940249372 B419A64C4AD2797D 7F508C6CF690BC6D FBD5D1D14FDBC5D5 DC827C65F4EA5666 A95BB3B1B73F8AE0 234656B83A996C25 EE7EA2CAA1EC01CF

Read the ciphertext. Strip whitespace: 3,408 hex characters = 1,704 bytes = 213 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201210070925 (name+title). Key = MD5(password) = 203e99393bd2b2493ad299d9f651fb7a, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 53 GUIDs as hex (shown below).

Decrypted: GUID list

  1 b28cd7cc-3084-7500-9df5-909eb9d1a094
  2 2fea6a6d-da45-3e9e-a775-a8637aa8c79b
  3 a86c4578-87ff-8722-852c-1ac716a408c4
  4 fd3a1101-18b1-095e-a5c7-7a3f1681fc6a
  5 0a9d56cc-b5cd-88a2-98c5-82dd1a5a424c
  6 9571c298-c6cb-1163-be28-d5e8426f9795
  7 1b669997-9312-3ac4-83ae-703dc417f84a
  8 886b214a-8f69-56a6-8d71-6e8587a5980a
  9 d628f265-27ca-15d1-bbb9-77b27c52725d
 10 782ef3fc-3c58-3e87-991a-97d29be2ea91
 11 f58e15c6-2a6e-67bc-b360-1e1113f140e7
 12 8e2ccf1a-f87f-29e4-8ab9-753031c4e89c
 13 9b1d980b-0245-55aa-919e-83da5609e2d6
 14 388b9cc2-1e27-4dfe-b55d-ea353da3e59c
 15 1ff6466a-cb46-0de6-a292-ba9a3f778654
 16 20c8ee96-0c27-3914-80c7-55948100d4c6
 17 b133b730-7fb2-68b5-92a3-09ff08560ca6
 18 22514b0f-724b-0fbe-a70c-0080512e080e
 19 eba795b9-bb45-685b-b73c-2713d069940c
 20 a2ce36f6-3e7a-1f97-8d4c-0e3a8d13f75b
 21 6d6cabf7-2409-6960-bbb7-e14a65631239
 22 d657175b-1dfc-0606-bf22-b71940a2fb02
 23 a3f6ae90-f9d3-6731-b3ac-2c00cdfc54fd
 24 17615780-5822-4642-8415-9f00618d08b9
 25 dc6f8bd3-27e1-0e81-910e-24e7e4cc2656
 26 5892775d-813f-81d7-87e4-81905ad6c509
 27 fbfdbf4b-839c-7596-bcea-87d21933b260
 28 25a33e90-1abf-3223-85ba-b0b24c6597b8
 29 616c585a-c055-41c6-8688-48bc7fe7de0a
 30 8c81f6cc-c714-5cfd-9b9e-7bd7b41d7236
 31 4910da1b-0299-637a-a0e2-3c4da5b5dd70
 32 472e0485-e013-1eb9-ae21-eb30762266d7
 33 f5de9152-a5c6-4621-af21-f195cdb80e72
 34 f16c3222-9451-1b00-8181-91279e2f2db7
 35 8f7b0121-243a-837a-9840-f2bab83f7bb2
 36 5a5412be-0ce1-418a-bce7-59a8135ba435
 37 f02705a6-8813-6688-a165-af4e54203d27
 38 b1dc4c3a-b1f0-5ffd-9e06-947e9ef3a056
 39 4250ee29-7b09-20b6-bb11-d5811d08978f
 40 805b6929-a5a0-6de5-8738-255e54288b6c
 41 26601134-c7de-77f2-b60c-d8a14befb1f3
 42 a67e965a-6733-2753-aa95-121483b9f21a
 43 bb3abeff-65ce-0c21-b44a-631a138d22ff
 44 8b79d8e8-0267-2c9b-b147-d6fceba7cfd9
 45 60cd808e-205c-5671-a270-edd6a9348e99
 46 ebf1da80-c9c8-7fc6-82a0-c46f363a2de4
 47 3ec0b9e5-9d66-82c2-9c95-c8c2ba7d0022
 48 ca087649-e59e-490b-8995-166c9265c467
 49 b9ca1a6c-72b7-2343-be4a-ec0e53052fce
 50 bc55d173-32a7-43f7-8ef7-7c472d839e9e
 51 eb04691b-5d39-2a8f-95ab-6dda276c5b88
 52 c5f49f95-d1ab-66a7-8022-81fad70c47da
 53 92b4b46f-a129-4629-a44e-63c9fd7dcc61

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 73808135136254036061606408734561418465267202578424264. Exactly this sequence comes out of new Random(963).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 376 of Run 35 (seed 854,622,578): new Random(854622578), Next(8,64) per post. The RNG predicts N = 53; the post has N = 53 ✓. 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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