A858DE45F56D9BC9 archive

201303070808 19ucoa

explained decrypted filler

seed 599

Metadata

Post ID
19ucoa
Title
201303070808 → 2013-03-07 08:08 on A858's clock
Posted (UTC)
2013-03-07 13:08:48
Timezone
UTC−5 · title 08:08 against posted 13:08 UTC
Author
[deleted]
Account
A858DE45F56D9BC9 main account
Subreddit
r/A858DE45F56D9BC9 the main subreddit
Category
F3 filler: 3DES(name/title) → GUID list, seed known
Size
3,856 hex characters · 1,928 bytes
Cipher
3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key
MD5(A858DE45F56D9BC9201303070808) = 254b84bc59694c36120d99ecc5feaf39 (name+title)
GUIDs
60
Filler GUID seed
new Random(599).Next(9) ✓ verified
Run
Run 42 (seed 983,934,859) (seed)
Draw
234 · predicted N = 60 ✓
Machine boot
2013-02-13 10:26–11:32 (seed = uptime at app start)
Sources
community-archive, arctic-shift · body from community-archive
Links
Reddit · Arctic Shift · JSON
Score · comments
11 · 0
Tags
automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: seed

From the post to its content

As posted (encrypted)

6CCFD02D6C621D8A ED746B2961A43A31 6B73C098C56CB56F 8C87DEF09E0741DD BC249AD71001E3AD F04FC4C75E48CB0D 33C0BD1A504F04FB 8C2686CB59619331 669BC3CCCDF78A38 D0E695C1454A9460 ED6C405CFC2749D7 8C56E81CA95FC53E F9F09C686BA7BDC2 46931EA721232C7D 8A2053D9045AFD78 28D363FA06C46339 87DA4468145BD535 B22B713122D6A41A 8B002C50F9CDC5E9 0AA2BCBB9158C1CA 73FB67CEBC1F739C 133662FB6B996E72 A49258DEAEFC9B61 ABE4990E43500EFB 2E17993E653CF689 D42FB73380D72674 14C91C35D22835E0 86DF77D2181FC873 EEE814311E69BB71 FA6F4C60F5B688F3 F3A9A1441DAB3B1E 096FF295FD10952E C901FA8B6069E567 37787780D28A64E0 6FFF86FC3E29B406 6D28609D245F3B83 08ED832A62B8B65E 74B801488A72DE00 F16BAC70E36F5BDF 39D09F8D2758BDFE 2F3760A481159AFE 7802B3952EE1C52F F7FDFA5F6EEFBC87 0153905364B9021F EC6F92D4793798F0 6206268E5A902229 D4ADC59A03FD580C 8CD146CC51574282 86B4562F52344F2D F6CA784009A1BD7B 21CCC1EED0B00276 96376143F38591FA 8DF36F1BC3CF75F1 01FCB261526E56BD D0672F386A4A50AA C9B3D409E3B5E4DA 414B4074D1E4D1E5 B8336C06702F7118 8B1BE07934835AA8 1AC8A9B8C66B8596 AF488C2A70A3F293 75700C5979360159 5B9555B484E98455 E067C87ED730B362 876AA148EDADABC4 EC1CCF1511C8DD94 7272C7C6B5877904 7232FB6494DDD674 A69CF5DFBDED868F BE3E776F86CDD831 549550A7A011EE7E 18082A2DF6A5AC8E 1AA86F0E08649197 9B12F3F143D0E2B2 4CAB18EB3686653E CE156FFC786DAF72 07CB97686F8DEC47 48B69332774C1910 B85AC4883680765B E266AC3B4AE11A29 8C6823B0560373A9 B438671999570C58 FB0E2D32719C0DFB 72CC4C67F1E60F83 F1313F6FD429527D 7DB805FEE9FA9DEC 8448371E7CE4214A CFA3B245CC853377 206B2E89434E35EC 3B36A75420ACE875 379DDA0395FAA288 95933D1FFBFA5084 6F124B07977BC0F3 57AF263180636C8F AD0579BD59D0F3D3 7B060A29ECB14231 63DB41EF041CF303 A6E3D4F71DFFBC82 8BBDAE2413D956C5 9874BF29C0AE94D9 91A187BF079E0760 3A62D6BD625A5A2B 611AF7C9EBBEABB5 E0AC13DA3EB09BFF A61214F6EDF7881B 57C060B019D7034A D9A306FCD4AA1F62 225A298D12F52930 5B5CB1B6D525119B 6674F9C535F9FAE7 6182932211DC8707 9FDD1B09FDA8E93A 3092CB22BE7E4AD8 7D4DEADEC187AFF9 69FA1D8DAFF0C597 D868D57E49E502E1 024EE25C18C29076 904A8EC887CDCA94 03EAF7E2C929F68A 73E107B8AD900805 67B67A4476F42C00 7A3077C136FEBC4C 3672676595C2437D C890E05A2A034B23 FFF377D4FDA4AFD9 D3F7C2F0D4BEA025 D32CB30C4DE4D096 5F925ABADCF43E3E 8730FCA855B08868 A55ED506F9F0B557 FC058482323CC42C ACA5CAFE746389D1 1E05B4A42D349EAD CB46204490CB7770 EF7CAC946F1EB800 6624E8295BE3704C 2B34DD0028B4A6A2 D4F7AEB2A24A1C32 EFA71D76AF9F54EB 4AA57668FDB8BB0C 66BAC4A3DA43C7D1 216EAB965D87B3BE 0C87922F15482BB1 5261FCED554138AA 955847448407376A D40154410FC0AD98 131C94F60A149876 9925A9612870F5B7 63718B15CA88BAFA A3DCF64FBF7E8B19 A1E17CBF9C07469A B9F83D29115401FA 19A280EB70A9ACF7 9DD133ED6A334E55 E1500E6D15F35D06 96B9C87CDEC58C58 E3273DB84074A1DD 255AA1F2ED2B7033 880313C43F92E700 24CC406CF4FA0822 6292AFAC9B5A36B0 CF72FFBA356E7B29 558B5ECD91EBB9A2 38C285D60BF54FF4 3E31787A4E6F59D9 79FE8A628C7BA3A0 AB2D3113C245328F E3061047E62167FF 1DFBC6FDF87BB85E 3F64C4972077FAD6 89EF7ADF05F13E27 BC299F7DB02F07FF 6617DF84F21E6AA7 506FC82418D7A7C0 301EF316E6C51F75 72A7D0D76D6C2A6A 791D6652703B0893 95105EEF4A973133 9FD036C417EDFCCB 979DB6775AF51BAF DF7B9C4B0BE637FC DD718277AFC47B01 CD8080BB4505DCA0 B20C0A97C011CEDE 0A901AB9A3D13BA8 4EEB02A834A1CA36 4660AF76B276FB59 484124049F43A3B2 D462E0F112AA06C3 680C889CACE632C2 5E14368EC411329B FC094045A7B56A4C E0091616FE572C05 87B8C62D5D93C82F EE3A6C4619497DEA F1304DC3A183445E 0427378BD64A2584 264C801B723E9B2B 82FA0E2C41F81979 062CFBBD4B6F2349 4B576B75EB8A5EE9 F3B9607DEA869CD2 A2F83FD83C00CB01 56C3D1F2E9996E6D E4648EC180EC39FF 91FFD3597999E06B F7E5F411CBCFEAC6 018E4FA190997021 9FD66D266BDF583C D864973828D4F018 8038D7C4627E5DE3 1288DD9A08C625DE 987B04DEAC1BCFB7 253E556358B42270 A3A171AC26B4070C 21479E8685F1AF63 5A724F7AB9C7491E DCB8451FC14DFF08 10DB415C37A2E8AA 07CB60CEB6C42E17 A22C2202D95CD4EA EEEF457859E1E5C9 22A31B2DC00E7AD4 F99BB7B9FD947050 F5267416959DEB26 C8482321ACEEE85C E8D000F0698A9705 3BA01017823F606E 4F48379278BAE5B9 C60D8279DB8ADD14 A6C0615AF2FA4E7A DCE32C0B824C174F 85E8CA595256150E DB8C26A4BE3DD180 F95657A6C8411CF3 918ABAE5139AA455 D6988D79A23AF09C 01D8D3ABDC8AB51E DF609ECB81083109 9A8BD250A53D61CF C1F60296BB909A9A
  • Read the ciphertext. Strip whitespace: 3,856 hex characters = 1,928 bytes = 241 8-byte 3DES blocks.
  • Derive the key. Password = A858DE45F56D9BC9201303070808 (name+title). Key = MD5(password) = 254b84bc59694c36120d99ecc5feaf39, used as a two-key 3DES key.
  • Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 60 GUIDs as hex (shown below).

Decrypted: GUID list

  1 a31b8717-13ad-5863-a52b-a27dd24f4949
  2 f3955f03-1b15-52f2-ac4a-51025467c7c0
  3 839bd0d8-0f05-4bdd-a854-ed1133aed4c0
  4 5c090694-23a1-3d8d-8366-6a6d4f20d59c
  5 95117bb0-3075-5f67-b623-88170f3fc87d
  6 1512be8c-ef81-015d-b452-db8f72df50ed
  7 25722998-b78e-23ca-86ad-abd1d014b50c
  8 28f23fe7-89fb-854f-9d06-2561e736ba19
  9 feda0c93-1d91-03dd-a089-67335e880d5d
 10 bdb1e811-1f42-1826-836c-fd00a5ff12cb
 11 a5c41992-455c-5a0c-8b89-ea9f4a1e9858
 12 a6d5e37c-caf2-14db-a04d-513a57ccaca5
 13 9fa69c09-e5fe-30a0-98da-412e65c3cad4
 14 218df136-62b8-0c92-9f2a-f448221ca8f7
 15 0c8b8c13-7365-24ab-ae55-e109bbe67fed
 16 bdca4ce8-8c84-1e94-8bba-9213b3af51a1
 17 44a3101b-8ba6-5fec-9801-eed62cd8403c
 18 39c6dc79-f25a-310f-9ea9-c92b5e1e49b4
 19 b42aa6b2-b2d1-8ecb-af4f-e5c245275000
 20 bad5941c-5ab6-2b45-b405-8cb03cefd90c
 21 3cddd94f-0b28-3914-8187-d14e4233b938
 22 41a63c11-ec1f-7839-8c35-6c05db67d925
 23 52351e8c-85a1-24b6-a659-ca2c6417cb85
 24 ee9f7b6f-923b-201a-811a-fb5771ccad79
 25 b9ef7db4-0fa2-37bd-81c7-c25f9ecfb9d4
 26 6947ead1-7611-78bc-a984-83443ae3b52d
 27 b1213066-1c4a-83d8-9a72-ab7a50c191af
 28 4a290d8c-a26f-7cba-844a-41680c49f41f
 29 203418a1-50f7-8631-9bc6-a9d8495faed5
 30 8121d865-99cc-49c9-924d-88c93d6e2b42
 31 3d1060ff-4069-2db2-a36c-6742d31da447
 32 84462f98-1c53-2fa4-afce-929f2afedbf8
 33 3ac453e4-098a-1148-82aa-b43c4c3fb13e
 34 0a7e998b-b950-0b23-addc-83a5ff8eb019
 35 92a01ade-054b-772b-a86e-1b544247f1e7
 36 c431dffe-bd74-6c8d-9f67-dbedb8703e1e
 37 650a1e38-e1f0-17b1-a24c-8dac48d02e43
 38 03424f45-b973-59f4-8dbf-30f26f708645
 39 ac572731-1eaf-8536-b32d-a70fc6cf77dd
 40 cbca43a2-4436-0af8-b00a-b1adccea60fa
 41 19823049-be38-3e6c-8624-d3284e72fbc1
 42 4e0659a7-e8e8-166b-bbd0-3a63ddf5f5f5
 43 38c069b2-9a77-7aff-9505-ada68c721eb2
 44 cb818105-591b-006a-ba6b-e7ab69b5719f
 45 fe7fb63f-6d76-6090-ad24-dd0989b44d98
 46 b12a8e2d-4fe7-2e6d-8ba2-6a36e7791909
 47 0b7e565f-4a22-105c-9043-9a4d5ed71cd4
 48 497d8b44-2ae1-774e-8df5-10ff60a21f0f
 49 a458e15b-29ba-5887-97f1-4bf44a017fb9
 50 978897c6-3c3d-30be-8ace-a3ec8fa2219c
 51 16fee419-7b11-08e7-aea8-b3378915ce25
 52 0df15fdd-88bd-6186-b2f5-722a9f314e23
 53 6f5d965a-0adf-8397-a5eb-6c6044a826d9
 54 26552a5b-c895-485a-bff4-0040ab098f10
 55 a1c65833-e40c-1a40-81ab-afa68a4780f1
 56 6e296154-766e-78cb-84a4-671ded3d2b51
 57 1b174313-766a-3f3e-ba31-64563ac6f60f
 58 445ec90e-3f3f-1f10-9e90-a3ec3a461736
 59 7dbc17c2-86ba-01f2-889d-bbb78dda6118
 60 290a4b2a-9910-7b38-8ab8-484bd6f783b7

Explanation

  1. Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 554350280151302153823722378784221076158031706217530684173107. Exactly this sequence comes out of new Random(599).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.
  2. Explain the count. This post is draw 234 of Run 42 (seed 983,934,859): new Random(983934859), 4·Next(8,16) per post. The RNG predicts N = 60; the post has N = 60 ✓. The seed is the machine's uptime in ms when the app started (boot 2013-02-13 10:26–11:32).
  3. Conclusion. Filler. The content is fully explained by the two RNGs.

Related

Findings: Mask digit · Count RNG & runs