201301031959 15wtz8

explained decrypted filler

seed 484

Metadata

Post ID: 15wtz8
Title: 201301031959 → 2013-01-03 19:59 on A858's clock
Posted (UTC): 2013-01-03 22:00:00
Timezone: UTC−2 · title 19:59 against posted 22:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 3,088 hex characters · 1,544 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201301031959) = b2220fccf0c857eef3170a1e7f991ee6 (name+title)
GUIDs: 48
Filler GUID seed: new Random(484).Next(9) ✓ verified
Run: jan2013-A1 (short)
Draw: 2 (assumed: numbered from the first post)
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 49 · 14
Tags: automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: short

From the post to its content

As posted (encrypted)

6A3C24AC3B17EF87 48A5077FCC80652A D55FCB45DF6E6FED D8FF1C98CBDEC2E6 C8441A1E4790617F B60B6E709DEE7B73 D450660B13B2E204 B5DDCA36928C7D50 7DA11587F8129112 530CAB67DB18F7F4 598338C32921081C B3EDFE9AB890F867 20A26A0C842D53E2 235C4DCB854EC1C9 EACE94656B81A0B7 02C2A260BCED5C38 7315168FEBB16598 8265CA083E7270CE 3F988747C5EBE0E0 5C0F166EC0CCE99D 115838368EC949AF B5D0D5540139B12D E1EB33F22A84FBEB 3DC3F407801681A6 2D6D167A650C184D E6B3BA7828EAFC7E 70FDBCEF001DC611 E733842B7FD42CD6 F11B214D0017DBDF DDDCEB460C6E9309 09DBEA7011B690D3 200074FCA96DF046 131354A11CB4FC6D F925E1275F250087 A6462AE977021728 1BDBB7027DA2A2EF 6199E26CCB537BE4 6D4836477C71CEDD F0A0A5EE7CD2F2B2 BB572923AC9B7B6F 6C08AED092BF4487 7E7D263CF4306AEA 28B1ED241F248F15 A44F7EB4A49F38FC B2B517A13F666FA1 CA68C067E4B6F3BF 407AA26462E9D3AA 86ED660F3EFF7A66 697CAF7ADDABECA9 D30B5065C7D7D3E6 D537846FD6163DBF AEC72D045CBC6897 E4774D0739F0B73A 397090980D7B83EC EBAE9F5BFA3338BB 16CB2E73D86A347D E56C2264DFB86F0E F2E17DE357F486B7 BB6846EF3EF22AB0 28422CF63A14C2A2 66E749A70E1863A8 815861D0BA40AC3D 0C2849AF5F32C0A3 0CA3074CBC7B8C40 9700D1DA9C55FB06 34F2B1C07C23819F 7AB8D2869517B5F6 0A3584F371EBAD7B 792BFDC4E8A8E58C AAC4224A160F2ACB E4D8E805D81800E9 3BF06B54A674EFBE F66F937D6C3B0A14 2CA175990182D452 D2E2A4D411F3FFB6 396B1D242D168D06 CC3D18DD7E676AA0 01E8FC26C5CD8E58 6AB2FB785BA163EE 3745B978BE0AFE01 C0B1E431193E85BE 4E37CD7E6D670074 57A573FDDF80BB90 224C3F4B78B937AF 01CCE7B7F3454EC0 122483D76B6DB9E8 33030C63A9979AB3 A4A6D5BF2F1C5AD4 7444F08A48D74CDE BC2EAEDC24749025 551675D2537CCFED C9356FD6F7DC3D8D AA39A9A614C9DD15 5156B113889712D3 5F29CC267E1106C8 FF7F4B3D6F5F193D 367F687CD1012D5A CD52364E0E0D4D88 15D4B537A6687884 7BD5AC22955A019E 1CA6766230F16B48 1BCD99668CCB764E 5B2EE02BA8859271 3513B4C6C54ACD9A DAF1381095613EB1 AA730583E9A9AC8F EA613DD1853E479C B03E791B1B3AA483 642559E6D7BF16B6 4758949462D6D77C BD0A7D4EA21FAF92 00AC8F03B9BF486A 9BFD8A3B46A580D4 78552E7271C6CB90 5D51D63C01E50F44 3B68193118C7E147 30CFB6153B31C601 145439B0CD1A8836 E446122424C4E235 7719020275C15667 041835289F48CD8A F81DB5E1975E9D0C 94208B9DA6A65D1D A6CD68B38DC1B179 529DA7B1EF7478B6 B7747767A8A9AA5F 6EF48ADD3226ECB0 CA8D66996CA5A381 AB586B2CF5AF4C39 88546ED0092B3A0B 10BE2103B79730DA 53F427A1CE9B010D 27D1C89DD4D5378B 4DC96AF391BCFB30 24390F09D8C5DE40 649EE9053CCC351D D7D90A829AD36992 6E454D44F6695C20 F00CE1B929EA07CA 9D600F195B3B8764 58CEA082F1509903 548EF077E4315CB2 357045E3FD9E0BAC 10C87BA7434855F0 CFC2A22A35A3EBD4 E8D8FD41B64708ED B11B8C1ECE95C637 E962E5105A8B8970 2CA28A50778258E9 332C5DC7F7305641 2DEE9D2AD488E48D E45DBCE656BFDABE DFE3FF368AE5C771 1F9E72A7E7F28A0D 16A16B645CBA20BB 564C35B55BE56FB7 7081BF295CB24BC1 5F6D67307D356E04 C68BDBC637DE17B4 77C805746DF9A753 18192BCEA33F87AB 15B0908A2491FBE9 A7AA27CF6B9B285A 95BE26BFEFF89FA0 4CA2CC2B7DDA0E5C 1F88535A0BF085E2 5D8464B5F4059079 114F517B306ED7EA 37749F47C6F7C915 835706D71C9695C5 0B0899989C3ECBC8 BA5C2C9B318F685A D1C56FBDF3C05C19 30FB2748BA4E7C60 BC4DF6C4AD070B54 71E562498A89DB72 F16BFAFAB26C8028 DEFBF802FEB80F6A CABDAE5B52496B4A DE6FC815EBA401A6 4C3213E8BA77A752 37431FE281B22407 864B94632605D974 DEEB7A3868BEF0AF 9EB6537CB008BD62 7B3EE5825B67A36D 3C771A7F1BD821C1 08BA6E1E592A86AF 65F782F1906DFCAA DEB31A8A14765D9B EAF9C4357CA99685 F8BA7E044BCBA6D7 6CDB9726DED55C41

Read the ciphertext. Strip whitespace: 3,088 hex characters = 1,544 bytes = 193 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201301031959 (name+title). Key = MD5(password) = b2220fccf0c857eef3170a1e7f991ee6, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 48 GUIDs as hex (shown below).

Decrypted: GUID list

  1 cb12f06c-41fe-5e4d-a3c2-df13729ae49e
  2 fea40f81-afe7-7fb3-99cb-b878359ce1f7
  3 863a28cc-fa0c-0c87-b9a0-dd8702728255
  4 0a2e7cdc-32aa-7210-ac1b-825b4d173a53
  5 2e41e116-9b33-65bc-b4e3-a179949e8bf3
  6 514bbbaa-390a-4d7c-9120-4251cd8638f6
  7 eb5a986d-a8a0-6e86-b956-58f73082beb7
  8 0b4afd4f-459a-2d74-8c6d-7ecaec48e9ce
  9 f7b20a29-f1c5-7de4-b1a3-8a2f8fd6fb01
 10 a2be1c6a-afd3-6b53-a20c-a54748f0634a
 11 15fff9b1-7f76-72c5-943e-fc485d64156c
 12 7ab8bf78-aa5a-2855-99d2-ce80f11a2e22
 13 de8d4d61-0d76-3f64-8303-35e80e974cf8
 14 fe35e752-02cd-210b-b5f9-8051f7c6c013
 15 f00aad95-4b3c-60e9-bb18-0387f1d53b36
 16 e0e78901-0d5b-2792-af72-f81a9e8136db
 17 2d4744e1-77be-2606-82bd-d5c39f4c6801
 18 31a39846-e7e9-0058-8f64-54fa9a73de3d
 19 c8fb9dbd-d9fd-7b49-bb2e-65948c93d3ad
 20 4ddb648a-8542-695e-a907-c36d7010f795
 21 d333223d-6822-18f7-8687-8d0c59123535
 22 e12ae234-5450-5efe-970a-d69fc6c8d9b4
 23 d6ee4771-b13d-776f-9ba3-bf6e5e9519f7
 24 8ab47679-8613-1fd3-ba58-9cd91e156198
 25 7ecf9ca3-e39a-1023-8ce1-b2f855c8ea4e
 26 72b4ce3d-8a57-77be-9aac-dfb90ccb31f1
 27 3a4f0477-6b71-02e4-91ee-deff2efd5677
 28 3c2a8b9c-115d-59da-a1b6-3157d887e902
 29 a869dcb7-7437-260f-bbee-428dad8e30c0
 30 ccd761f4-050a-7e07-95bf-a180f4b9c00f
 31 7b00a9fb-ee23-73a9-b7bd-e1284cdc712b
 32 293aa60f-dc13-861f-8440-594206392a3e
 33 58ee9078-93cd-8df6-8228-edc7edb13546
 34 54dc21f0-e559-1fcb-9a88-dc32ae10c9f2
 35 4312e5ee-41e6-5bb1-9b6b-2ad27b5ceda7
 36 0f587ce0-53e7-65dd-bdf1-f0561a0e6bb0
 37 3d2a7636-7a69-87ee-9e9e-9407fd98c03b
 38 3b0cff93-6ee2-23bc-b78d-31752124853e
 39 c2905f30-ead7-22bf-a61f-dc5f46f1abee
 40 c65ffff0-86ca-6239-a79f-0090bdecff24
 41 0735151e-67c4-0d52-bfd3-5df4e481dc4e
 42 dd15164d-b480-10c6-8924-5c5f80aea33c
 43 d4e113ed-49c1-0e2e-a244-fad555d96e9e
 44 a4e9e851-d402-066a-8ae9-2c0444607215
 45 f421b9d0-5ea8-0a46-ba8a-06e2982d8570
 46 d3292b42-10bc-08d3-b722-2295b1f485e1
 47 6758e32f-6b03-0acc-8fee-1bc1c2f9c235
 48 8fd90978-9040-0b33-93b1-b67caf48aeba

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 570764627672326220761571170527788156822601000000. Exactly this sequence comes out of new Random(484).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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