A858DE45F56D9BC9 archive

201301050359 15zuqj

explained decrypted filler

seed 569

Metadata

Post ID
15zuqj
Title
201301050359 → 2013-01-05 03:59 on A858's clock
Posted (UTC)
2013-01-05 06:00:00
Timezone
UTC−2 · title 03:59 against posted 06:00 UTC
Author
[deleted]
Account
A858DE45F56D9BC9 main account
Subreddit
r/A858DE45F56D9BC9 the main subreddit
Category
F3 filler: 3DES(name/title) → GUID list, seed known
Size
2,832 hex characters · 1,416 bytes
Cipher
3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key
MD5(A858DE45F56D9BC9201301050359) = 8688f507cb9892cea7c7b1d81ea0cc69 (name+title)
GUIDs
44
Filler GUID seed
new Random(569).Next(9) ✓ verified
Run
jan2013-A1 (short)
Draw
4 (assumed: numbered from the first post)
Sources
community-archive, arctic-shift · body from community-archive
Links
Reddit · Arctic Shift · JSON
Score · comments
9 · 2
Tags
automated (decryptable)2013Encrypted masked GUID listkey: name+titlerun: short

From the post to its content

As posted (encrypted)

CDDCD67C8D8F8C8F 7B60B4822F3957AC 47296CB753402403 DEC8AD440BEDE2B0 708875E698B02683 17AA8E316829998F 2F9441EA0E402A5E 3835AFFF7FDA0D9F CED92C0DA0F96ADC 971C0D86932A5AC7 E59D8D21A6B94135 D5F7BE6B76E03B56 43B4DC20E8426A5E CF3CD1A9D161CCA2 F3AEF943F8CE6692 849556EDBCE00C51 3F439E4513223012 31A825927401618C 06B3670ADA6A6A9D 4126981904FDFE0F A4CE8C3C49BE6C19 3B0D3FC1D09A638F 842E301C0D598E86 73B77926074E9AB9 A22E42F43296AF7A A9C18974DA43464C 396176C61AD2772A 50E69DDB939E52F2 A271E8F70B5CCD00 7850D9064E0EF0EF 63C098BE67356509 E172BE7534E7D3E9 5CC5274FE1D0EF13 2B1DB08AD6E149B5 DB0E008BED47DA81 E478032A308ABA89 D9C59CE64302FA70 266556AA51EA2028 A38C4CC374A20805 38E3070BFC231BB1 3229D50FAAD41563 325C18DDE35A22F5 2CAFE99C62F0BF2B 3DE250A89ACB532E 79145BBEF2364094 1F51D05D5E5C10F7 CAA78E59F11C4CD8 E3EF57B62A59A39B 2F874922CB577178 DC44F92055BA4269 41B89C211448DBC6 D2E2F202DF79AD43 6134028404C08170 5C37994CB0729E4B D3D82333574D767D 3C9440C8BDED4994 6F02D1D65A7D15A1 E823D311BB59D7F4 ED888E3109472AA9 EAA64F76B782B9AD F29EE048AC2B8EE3 43A1F1A6CBBE9825 FF86C83658B0470B 4522235A1EB00384 76D2A99B03300FAC 038A170C2855CA1F 74C13BF31FC7C262 C76136E46378FA15 D7FD3955C1D02BE7 0620B8D3449D323C 376EC30FCB3112FE A1DD5AE89954DFC6 85552FF02FECD356 7358344FA1998892 54A43BB67C224EA7 4AAA213CECA35A35 44C5B06E0F14CDC9 B542A68418507F09 23C47649B1CF7C7B 55AEFF668A39BE0D E35D3ABC648411FA B53BCB9DF0509EF5 335F0DCB1AB81B04 A93C349DB62D0FDC A9466EC90C3999E2 9262C90AABCB621D 6A2EB234F12D505C 0459BD50372145DC 964FAE249066C624 D45BCA5D1FA428A2 7B161639D655EAD5 419A99B04AAEB7FE 9CA06C51D69309CD 03B678E2C4020FBE 9D6E35CEB2FD815D 21344A510B6C093E 028CA0B409F7ABF7 9DA4D5566DB1E97A 32072915FC118491 73511A7684CAECD4 6E67E46F728957CF 03F2789F4DCE4D10 F6CD6D353F1D8899 EDCD6CE4C5990D19 53AE76BF5075C42F 070760BE94EBD735 3C88222CD9D5BA77 E8FEC633789C0D3D FEBA4DF76B066648 C9DBC46FB3D81EE3 E6B94EE49A42095C 7A69A37CF0C6704E 776F6C55D8FECBF5 2EAD2998FB777776 401BD2856BAAEB38 738C57864B839AAC 4FE3CC72EF4D9FDD 5089F280F5C5FC61 676BB8DFF21380A1 B7956D284256D179 408AD0875FB4451D 0F3FA1916E88FD2A DD8336F953A4CEB0 86405B15995EC5EA AED31FF6C2E10FA7 C0FFFAE8CC680BFC D981CEB4DEFD17FC 2EC5C14EFE838CAD 50340231DBEB1654 358917E394B5E0C9 A094140CD330C4A6 A320A4C588DB4424 C1B2FE8FD95B2A0E A1BF2E230CB29203 CB4DCDFF540B1DDC E15CF16DF4FE0FB4 B01AD2F331266C15 306867AF9D808E3C 8AE23EEBDD0A05F7 CFD629CDF9DB73E3 12FE145CB6B35C68 5373EF485AB0B16F E1215A30C2FAF3C8 8356B187F5AB100F CF428FB4394DDDB3 318D78E74CD37E73 B99F659D93012C87 6F8000995E6217D7 BC8C0545D5E849CA 9F5120BE74BE9E96 173FFD73EF711FA4 304843A605950382 EBAECF7D6D1241D7 F4BAA0C2BF801ECC B5D25063A2D39D79 E2B7D8C91F754947 A9BC784140C65795 6A6672A48D236748 0C6C5E791DCC46DA 37A82AF51E259F71 FD88A72EF424AA02 0A6263A985C370C5 EFB2BC4DCF664630 16D8CB22A24B46DF 66E13362519FEFB4 9C86078D2463B356 206642B0616B4298 CD7B6930B45A5278 020BC7A43D13CC21 A4A46F757D0C5093 A525E6DD7FB0B69D FC0C3F0E8D6C9A7F 6C4FCF4E22E22BEE B824BB5D6A1C1C75 B09EAD1F6C3FAC13 7E19C03AEADF8615 D6494814F447D92A
  • Read the ciphertext. Strip whitespace: 2,832 hex characters = 1,416 bytes = 177 8-byte 3DES blocks.
  • Derive the key. Password = A858DE45F56D9BC9201301050359 (name+title). Key = MD5(password) = 8688f507cb9892cea7c7b1d81ea0cc69, used as a two-key 3DES key.
  • Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 44 GUIDs as hex (shown below).

Decrypted: GUID list

  1 118cb17c-bc8e-89d8-b794-50abc01b97ae
  2 81fcf471-cf43-6661-9a92-fe49962a3a13
  3 d51e9109-64ac-4730-952d-abb5b385fc36
  4 4e560e11-43a5-0369-ab8b-f9426917817b
  5 cd826af1-490c-0fbd-b66b-39bc825008bc
  6 b7adf0b8-ef45-73d6-9f4e-c3fb432e8acf
  7 f154171c-66d9-797d-9ec3-233687478661
  8 31d2696c-5aea-88e4-a217-36b5d6a7858b
  9 b8122837-42b4-3801-8777-9bb140da5ddd
 10 791b972e-e9b6-0a3f-8890-9ae9450aa6ae
 11 677162ff-1345-4c9c-8332-c9dbd2bad215
 12 c678ad81-8f8d-6031-905a-746d4e20c06b
 13 b7464408-c20a-7bc1-9b73-6db356370272
 14 ac2e3f0e-c8e1-4dfa-a892-559b96cb018c
 15 fe74604f-3dd3-29a8-977e-03c742a358cc
 16 6e84833c-c006-3f2b-b8e5-0649dddaa1b0
 17 8ac29c40-ce06-0513-80e0-664870cd8c27
 18 2bd74c80-c9c1-6c6d-b88d-0cc757d3635f
 19 3a4cc4cd-625c-02bc-bc03-def384dcd1ae
 20 05bd7c87-45d9-537e-9c9c-cbe21fd93825
 21 5fbf6f4c-cfd2-3f64-b536-0dbf1f3ac82a
 22 01b72d73-4f33-447e-a4b3-1e6eb51e1dae
 23 d8c420be-7dbc-1b9c-9153-fee37fb5c888
 24 dbed7177-e6b8-7c67-8af5-283fd74fba48
 25 8e6a5db4-c900-499a-bf5a-84d8ccf5bc3d
 26 07e4944f-6a3c-41d7-823a-b4eb016061f8
 27 ecae4098-8e77-1be2-84f2-970771023660
 28 2bdb3a7e-d641-2541-8d2d-40f5c8601ace
 29 01d45599-d3cf-6879-a210-8808886b0a5c
 30 e4e016da-7a74-274b-946f-64fcf20c2ca8
 31 3b0b6a9a-c1d3-261b-a9db-566d4d11de3e
 32 0e7e70cb-17ec-2cba-94ef-f218a3acd3e8
 33 2b8e728f-d94b-0e76-92d7-35c2d1efd20f
 34 96e1d356-9b64-230a-9dbf-2eaf25363585
 35 244050df-5661-2bea-bc1e-7ed4019b95ee
 36 deac1340-285c-3574-ba44-b26573e92bb2
 37 8a9f8eef-e436-3a3b-9b2d-753859aac82f
 38 2bd8065f-860f-1927-8100-54e43c3e32b0
 39 3647c6df-32f7-73c4-9b65-5f2ae07440f0
 40 9b76253f-8738-03ad-ad2e-1153fdea47b7
 41 db36db89-0de1-268b-aea4-c5e15732a991
 42 7253496b-2bfe-7156-b1fd-84c8b9d0110b
 43 1d4f1d0c-9a74-66e2-8fcf-eb6455f6609b
 44 7d4d1cd3-8748-525b-8edc-71c8be23df19

Explanation

  1. Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 86400778304674230605341744126222022331702765. Exactly this sequence comes out of new Random(569).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. 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
  3. Conclusion. Filler. The content is fully explained by the two RNGs.

Related

Findings: Mask digit · Count RNG & runs