201209231445 10co3y

explained decrypted filler

3DES(name+title) ECB, 58 GUIDs, seed 596

Metadata

Post ID: 10co3y
Title: 201209231445 → 2012-09-23 14:45 on A858's clock
Posted (UTC): 2012-09-23 18:45:18
Timezone: UTC−4 · title 14:45 against posted 18:45 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,728 hex characters · 1,864 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201209231445) = a0a9b381f7fad32bdcfb379a0492e563 (name+title)
New here: Missing from the community archive; decrypted here for the first time. (new results)
GUIDs: 58
Filler GUID seed: new Random(596).Next(9) ✓ verified
Run: Run 34 (seed 83,105,000) (seed)
Draw: 122 · predicted N = 58 ✓
Machine boot: 2012-09-22 10:23–10:24 (seed = uptime at app start)
Sources: arctic-shift · body from arctic-shift
Links: Reddit · Arctic Shift · JSON
Score · comments: 1 · 0
Tags: automated (decryptable)2012Encrypted masked GUID listarctic-onlykey: name+titlerun: seed

From the post to its content

As posted (encrypted)

3F18B7C574D8231F FC2ABCEB0867BA01 83E2B67C5BC0509B CD3C86740BCA6102 012D429B6F623962 06DF76C7FD8FA409 488AC4E8CF5AE3BF 1BDAAD2CA5EDB008 6754F217B2AB9345 5E752A34CB20B79F 19335C89DED40A6E B38E4601A0E5B9D2 CF1F591AF210E244 DA99D1DE3C06371E C0458BA2A6134A52 01EF4BF491FFFCEA 2E6AF7F242CBD8D3 43D01269686A3AB8 C8688188A04BFCF4 9045D187775DC66E 039FEE2BB88B1DFC 8031C44D8E596FF7 3641156FED2D8B3D 60588959ACC4B430 38F5778F3621E9F2 FA4927EB1475899E 48268504AD8CA339 C03C2A5A8309C0F9 9053D758D6853F2B B613C3E069DDF282 179DC16807DE1AF8 FC1EE833C89556CF 78243F7CFA75052F BC2DC25B68790B40 A14ABDD7EC4B97C4 EA370F984564C320 0A010174BC636A3A AB4F736BAD3B36E9 12F14D3C3F484399 74BC4129FCDAA528 1482DDD3C98092E0 C26E3544BFCD191E F5D12DBC64089740 8C84BAB82010CF65 CE13557303FA95DC 2E86E8848A31C8B2 91EB8B03AA73C36D DE4211D207C1B6B2 6C10DDEFBB2DFB73 651818A0D5B9AF41 112A83375FC78DA6 EF32795CCFAFBB9E 8420EEDEA81A763B B86B89D22AEF979B 203209F345D6EA56 C59CEBA633CAF536 BEBD386F1C2C5323 18F10DF845CA1962 108BBCE1F0203A5E D50176D8D671153E 5EB509BDA7CD741F 39164AE2C38C3997 1ED213F750BE670F 71141D34C144E90E F369B827C50CD85C 460EA46A43EDDACB C300A34916C661A3 35627A7BB536BF0E 33A416575334EEDB 9474B8B9A17AEB4F 348124CF118BAC7B 843485F2A7546961 1CE1088068F88DDB FE5A5E3B97611BF9 6CBCDF6498D47FE8 35B0BA4F1C4EFA53 BE76499BF6C28BC9 91EA7C15163BFD4B F5339DE01FBAB0FB BD07B765CC9E8888 A911EC8161C332A9 1C83B4A35FAEDFE8 3B025EC6122BA066 56611E90A4345B7E D057A4D158A68316 EC4F4214CDCBC3F5 18C061223EA7411E CE44A58DCCCC6E21 2F0D790AEBA55911 874221392A6BE245 61E9C7B19C301FEA A2C4269C41EAFBB4 428174DF75589873 A814AE4261B7297F D5A4E0A737A451D8 AA1FAED526E79775 0D2DA35A2A805140 5170C5E68C6C2C12 8F437561D26B81B3 894EFE44EF4D605F 8E6877B026A23961 4192BE99292604AC D5D01F5609AA782F ED816E486F2E205C B21A0CD90A557C25 5BCF2D890901C85C 280EF34E53A0B8F7 AD02F7D9D3F8D7DC 09274141B5882FAA 2B7D6E6FE043C898 0393417B1B679A9C B59BC764BAEFC180 57E75627CB7DE42C 0872172A449F24CE 7DFF7925A1BADD27 817FC6D7AB841C51 739D601A67DF9BA0 BA7B06B10F8AB8CA 6462937751222983 E648AED7A2BE63DB E5D7B5B8837C635D 9C7BE9C925DCA465 DC532F2F1519812E D100F02EF9EDC552 DFC6E01E04BE443C 4E7E0ED6B604CBC1 A92D8BD02B31E27F 198ED5B0DF4A6E61 A426C6703BD89A28 23A2C4C68F162628 F783FD7CC64C7CDE C1EE3AE75F5C826D 7DAC4B4B210B2BC5 B822392B81E06816 DB07D61D4D1FDBD0 7384EE95BA8580E9 AFCBFA7709FAD75A B84FD8D4430BE630 A99B5D9DD3DBA73A FC967BDCBA0629AF D00634C23A1A257D 53F94E59078E8D33 5E42B2AE04FD4BA6 ACA30A56F6AE24D7 5870CDE8F60DC6BC 9B724363743FE3E9 BFE111C4E58F7D94 5D2175BADFF51804 21B32A3EA69A86FC 47D656C6426A5ECB 73D7C0B0284CCF4D 5251C8ABC53C4047 2BF9D2DF7F0BD091 8CE5B9373902123E A44CCCD069BCA254 A4D2727F31744B2E ABE1993C13E9535F BB4815A2A362037D 59C09A7AF50E1D9A A7C79CA408714CB1 38FC9FD35E165D05 EAAD2B19090EC0C6 DC4486169B638D5E 41686AD6CF6990A7 877B98EDF4EB6C32 81F9E4FBA3B21E0A 4C6B9B6D02598018 64FE7F3140DE344F 87BAF1A3CA1FE43A 6FED521108C0B3AD 1810F3DF858ED05B 0C6A32474152DD2D F5B740E63941AE8B 08F7651098D91EB9 DAB2B7DFA70F5072 6AE5B6F04CF2D75B F7ACCBEA273638D1 CCAFF9106F079201 D656E148CF029072 D70F0B79BBA5C383 E810CBEB39C4EE30 4F9628474F795651 3AF340BD2247BDAE 063E4BDD8BF6C041 12042A24C424D3C8 E094E066DCDC11A0 D8397EE8B4DCBAFC 61B6FB419BFBF1C2 2DCF1BF4C7F9A1E7 3350D1169C9D0218 F5EE537B481A6444 6680CB08F2FC946D E37244DACA94BAC5 81BEEB38FFA84393 7532B8D8291DEC0F E55F492B71E9D417 249710A537082D3F A7318B5078938712 A4C07B8142756CAE 04474A99793055EC 55EBA7E4DB1D5F93 EF8A4FC37FCD2FE7 F31D08ED72F58568 8704E6201D176E30 CBB7CB385A8FF140 B516B4F3CC0DC4B8 152FBF1591F31A49 22B0F3372214CBFD 96676F9B5EB73693 6DE16D1E1F08A241 B2AB9DE9D22BA320 C9AEFC24C363F55A 3A4BA9CF837A8137 02840BFC79C51EF6 F640F8A50404B68C F8AF9E2165F75BF0 965D74CA2507A3B5 4DEA2517E6618482 C07940246A21D1F5 E230E5961DDB5FC8 02B9C521119DC049 C3E8F7016EAA421B 03A020903D729C90 1AD5DF8A35AAF9BD A84FBFE98E28BF1D BDA34082C43DFA02 4DB47BFE2D102508 6CA425C7B7D8699E B1FAD1114B0A9183 A161234034291010 EA99A2D0939A5A39 FDB7585F53EC5FB4 334BC45B0693F9CB

Read the ciphertext. Strip whitespace: 3,728 hex characters = 1,864 bytes = 233 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201209231445 (name+title). Key = MD5(password) = a0a9b381f7fad32bdcfb379a0492e563, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 58 GUIDs as hex (shown below).

Decrypted: GUID list

  1 1eef00a2-b109-0e3e-b802-7b4e4b864784
  2 1e8f4f47-ec32-620a-b092-af200c8d26d7
  3 b9c6453f-1881-3959-a457-207aabebacbf
  4 42a44ef1-ba6b-6360-8c27-24e10a190bec
  5 2c5336c0-919f-2ce3-b3e3-663557b86782
  6 a04d39d9-ff04-3e6c-86e6-0b2f87a47572
  7 c546ce20-df97-828b-a96c-e647da90d76a
  8 f0dcf7f3-5985-43b5-8172-0eb5e111ea6d
  9 c631666e-ca8c-626e-867d-9e5bf0f75060
 10 410ba8c8-8c57-09f7-b996-a45636aad783
 11 dd12d553-e08c-33bb-9c93-2d858ac9869d
 12 d3cb732b-285a-601f-baed-691aec5369c0
 13 49404db7-0290-35aa-97c7-0af80b423391
 14 5b4696e3-1723-4d68-a9a1-316807c1ef1c
 15 04e58687-2a89-15de-982a-8d82a2eacd78
 16 465c9c1f-ae6c-26f8-b776-2aed273741bb
 17 72be0143-1906-3d7e-9d91-c4107b5cc5ca
 18 7ca29c63-476e-4f1c-8de4-03d775e5e21f
 19 d6f54a85-b687-7f8c-8caa-78ddd1245537
 20 93edd268-06d0-0102-9f6b-c1cb255dd38d
 21 80a6720c-10c3-0de7-98ab-5dfe84cd029a
 22 a8542834-4291-056e-8d0a-300e72a5e0b7
 23 3d7254e4-c181-6228-96cd-45063ea9d3eb
 24 667ea149-9899-289c-ae4a-1457956d54d6
 25 a1851284-5969-1259-86e3-e432b3d03584
 26 03ba60ca-02df-73ca-9831-1c05af0c3798
 27 bc5e5796-23b0-37cd-aa27-7f59e0569c83
 28 2d444af9-1116-8310-85f4-59ec558d85b4
 29 38f7b854-c520-163c-ba43-2dbfdab9be73
 30 121fed00-09a0-0667-a476-d6958b65f532
 31 ddd50a41-cc65-1c90-91a8-e1f66d336cd8
 32 ab2cef2e-1eea-3053-b721-97a166889d5a
 33 4c7cf929-f172-8827-9d34-40f278455a28
 34 3e88e710-2cc1-8596-8a77-c3eb62c768b6
 35 4c8e5b2f-92e7-6ac4-ada0-e0330a57c855
 36 332ff66c-0982-53d3-aa3f-2c3ea1e28a8b
 37 fcc8ff58-9571-6591-a5e6-c74bac69f333
 38 331500b6-9bd3-4922-8f76-a8e82e60e778
 39 cc569e82-e174-3224-b423-c0a6621431b0
 40 f9b641e8-ff1b-39fd-aa44-c2accb71f789
 41 0d65b9b4-f12d-0819-8df1-7f4e9cf0c02e
 42 a79928ff-ac9c-2bea-a7a8-943e5e7fc2c2
 43 32d7eba1-640c-18ad-8aa8-3b3fdd6fced7
 44 84e4c958-6bcd-6efb-8fae-63dfba9e8f11
 45 81af410e-1bc8-14c7-abd6-88a12cd8dd2a
 46 3d526d84-45d8-56d5-97eb-a54bd4ee0bb2
 47 9716f9a7-131d-0c4c-ae55-f3db7f2bbe57
 48 a69c0677-9fc9-7023-a782-0bb1b4ac0ea4
 49 dfd154e6-0c07-3f7d-b0e1-374f483787b8
 50 0107b8ee-5177-82cc-b596-6b478f72d117
 51 d7c1322d-f4aa-53f3-8bbc-e34d333a3299
 52 fbd54846-c7a5-33a4-be08-d736bd570d4a
 53 30571a73-8114-629e-ad36-03167221345e
 54 ad7e9cca-c18c-8cbd-93dc-ba787b9263f3
 55 538812c1-b789-4d5d-ade6-b886de32dfab
 56 edfe317e-8801-09a2-845c-87c4d49f50b8
 57 d8854be7-35fd-887d-a5df-4edd617eb5a4
 58 b5ccb8bd-54b7-1888-8dc1-99dad5838b79

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 0636238460363412347000621738101388656433021615073853684081. Exactly this sequence comes out of new Random(596).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 122 of Run 34 (seed 83,105,000): new Random(83105000), Next(8,64) per post. The RNG predicts N = 58; the post has N = 58 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-09-22 10:23–10:24).
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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