201212292000 15netq

explained decrypted filler

seed 590

Metadata

Post ID: 15netq
Title: 201212292000 → 2012-12-29 20:00 on A858's clock
Posted (UTC): 2012-12-30 01:00:22
Timezone: UTC−5 · title 20:00 against posted 01:00 UTC
Author: [deleted]
Account: A858DE45F56D9BC9 main account
Subreddit: r/A858DE45F56D9BC9 the main subreddit
Category: F3 filler: 3DES(name/title) → GUID list, seed known
Size: 4,112 hex characters · 2,056 bytes
Cipher: 3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key: MD5(A858DE45F56D9BC9201212292000) = 98e63e547a17c72c10df2d439afc5035 (name+title)
GUIDs: 64
Filler GUID seed: new Random(590).Next(9) ✓ verified
Run: Fixed N=64 (Dec 2012 - Jan 2013) (fixed)
Draw
Sources: community-archive, arctic-shift · body from community-archive
Links: Reddit · Arctic Shift · JSON
Score · comments: 0 · 0
Tags: automated (decryptable)2012Encrypted masked GUID listkey: name+titlerun: fixed

From the post to its content

As posted (encrypted)

1B18F93A838FFFCC 3869CC2080901798 CB645EC820F2433F 2515E62CA5B78FD4 F5FB2805BB72A691 743DE99B63BB76C4 264C5998FAF4046C 820AA2AA50B83657 8279A8784862E08A AF7EFC2C23CC8480 06DDF4EE56FC1AAD C5EFDD03311EFD79 8FECF9D4C8B9A222 07DEDC199377E05F 6FE9617B7C48A2F6 6233A4795B951798 7990C708FBF141EE 17C999F9A4F9E50E 92C93BC2751F7497 07D7FDFF82BF215D 424500B91A6BF3C7 925E8F01B2112D53 0A18A39612688819 B3507417B3CF7D52 9D448821D2271181 2C31DEB3A1EC1D24 A5AF92EF0F4D2140 FDE30E43D210518A 0D2A16B0F905D900 DA5A2CFB0D742B75 B3575F97D9116EB7 2ED6A1A32DFCAFA1 FFDAB810130024CE 1CE58F980E502D3F 8E01A5FD79ACA266 C0DB5414A7E14E28 DC4B004194AD04B3 8CA1F385B42E9EA1 227BEDEDBBFEC182 E8A813A0E4EE77FC B64D0FEABC6BF3B4 CB428E85385D512C CC7B47CD27FA100A 14035B1395F9ED03 EF8ED79BE1CECDCE 5F0932D81A19B45F 7B116DD4F06BE816 A647A95887B9D07F 5596A2CD0BADBE97 A19CA3E3497392D6 A973C8F1B0FF703B 1EFCBEACCBB5D864 7026C2A4A5641621 A75DB34BC577E82C 1BE445974EE06205 83BA8533ABC85873 B5685120CF08DAB1 DB145C93FD794813 534EE111CB3DCE67 CF1302E091BD26E5 22F1C57E196DBD90 C450205DC6766BFF EEBC9643A37F3E43 73969B212703C77F 82B7D80C0A66C981 7CAA384F006D2EF1 F03FD23D12E3CFDF 3C5C79ADCBFE2BF4 6DCCCAAA939CAE78 7C41EE427FAFB53B C22D8054E0951E1E A174B26239BC34F9 0B279F496C44A470 7DC12BB7528472FB 4727F863DDF75790 7E9895ECBBF6EC01 683F957A7A7E55B7 2AA28A074A9194B5 C8AD1F9874AC4189 0EA9F0D9771F6AA4 4B347C18EB3BC873 A0FA876950670073 DFE379A182A7240F 9958955E742317AC 501BC641A90B0FAB C9DE4C0EAB9E1FAA 98EA62E76D630CC0 ECD602E201932FB7 AF4998230034CEED 639EC2B62BD2B4F7 38BE7525F7AAB0F2 38683AAE87D3C7F2 75E16D80FB7E9489 A6299A294F451279 8B71B470EE72BC2E 0FB828125EA2048C FC5B36628E36C2B2 D71B8DB884923D3F 0EF86787943E67D0 791942E965B838C4 373FA57D7ED047B6 68EB1C2ECEC1569F 0E2FAA5B0AD05AE8 85AD50ED3B395714 60535F3C35849151 F79EC88D590D2162 BBD57A337C501FC2 86EE8AC282D622F1 C8BE745FFE008F25 4F7EBF4C9463FE64 569328751DF0F938 3D6B8363023B43F6 17EB40B999232042 98AE7EE2E6B95076 58BD951E09EB5B59 EA8343B16697185B AE4B715CF622E9B1 7863D237A9D049FF 59391207985086D8 94D8986773178D3B 40B8E8F219256188 1A8332F48BD2E739 285C89353C27CC16 C2FF526320D42563 51E4D7A8E0028AD3 C130E8F9C31E396E 5C6DB9130C7805C0 3F8B5CE95749FCC4 D4B4B9EF2CCBD9A2 D5B4345DDBA9ED6B 748B1CAD62F07214 7CBAD434B488C424 96A312FFD589E15C 0ED634187AEC5E5D F6A9BFBACCB12B90 8A1E6B43BA37E102 1B54C0F6A7EAC794 604538FFFEB79D21 2FCA236AAA997115 16E6683EF38137C5 1DF7888EE84C869A 8A308238399FD926 C11E9659A0F18923 8CDD436AEB931894 20DEEDADDB2D06AA D6F708325A8ABB8C 55C0CEC37FC981EB 73B94131F99A39FC 6BDADAC8292B92D2 DFB0B3B56CCC3577 F1F1764F102BC630 D03C1B5A14EA3A95 519B2DBCC615DC80 44C666322166D9C8 D3BD0549653D944B 0F751ECBB6766375 BF6180A8A987E838 E9C6B325591461F7 DC679536148B2743 DEA927CC5EE8B9E5 E43F76BB810F0AA1 EBFF620F4A1D4E43 5FCCF6EA016800D9 4C1859F42385C620 1589B879B5207D02 689E00C42BC3309F DC6D69EE4170D202 D1ECD7030C91381B EE44FEFB11D94465 598AA9147C8BB0AA 40398281D11250C3 A4E4734F03AA1E90 5016831B7E7E7933 FFFFE077570810B1 ABB6D9B4E146427F 9AC70EE0F4A93757 9D48E819D251736F C580807A782615E0 1F061AB48E3F2459 459FB25264F13BA5 D44C9894FA1E68AE A566ABCB1F0C9D4C 210EB4B9B7CE390A 246256C0747EC919 0F6523879C6B220F E094B7CC8D514058 EB87D4A11237946C 0B2EDC1DEA6AF45F 6EA04BD99303AA8F 7F6E99111B9C56C0 E7BE86B57FCA9EB4 F60830C7308C00AD D3E6F20CF76A63B5 C79AEE37326D698A 6C3200393AE8F231 58CEA485BE6AC674 B1B7B275A5D0BC25 E5EA5CACD278BA04 E7D25141953005C1 8BFC533F5955DE56 397DE8F56AF448E8 E0D23208FE2E73FA 04F4347DD7629FA8 51496E615B59D51A DDA7B29F5912E871 A536B4810D086169 F0D1D51758E1FD0C F24ED4287B85E4E4 33D1AFD1266C2AAF F97EF11A24198B9C BF0844F6260F4CDC D2A785479B65F848 203BCF84F10829BB 923485A40A0673BC 385438D027A9EF76 D467ABA937E084D3 C56BB2E999C0AADE 17B3AE961DB10C16 AD95F9B33CAE4A70 20C758387585C378 F1F645AB259CD1F2 A847E614C0EC5377 55B699BB13045CBF 552924EBF1C6127D C443898D29105166 638E2587378CE4A5 86DF7BAB78B86528 3F08B3FE96787C92 A54E8C90D831ECCB 3D0918664D97B5BB D37FD1A835D6E2D9 FFD30E13152020E6 F7C520D529F9E868 C6CAA092FDD4D574 7026079725DE5D61 36B22903F6104C69 AD1DCE073767292D 9F722B06D2D12996 708AAA227DE17A0C 4515CC9EF698E8F1 3BB031B4EC562335 84034F9B88490A01 C5F3916F954BC6E8 47927C5A00827909 FB7EC9E34A741C1D 509092B95BC94672 43F5828D34B7C179 4B24DFC678CB6556 CA3574E747E4B4D6 D406119DD9ADAD6D 1E2030C48FACE839 C73F39C5533D3569 C485CDC1B43D01E2 73DB399327E30F41 73E1C8FE0C7134E2 278D82CF7EC262B4 18D8C92006AB9743

Read the ciphertext. Strip whitespace: 4,112 hex characters = 2,056 bytes = 257 8-byte 3DES blocks.
Derive the key. Password = A858DE45F56D9BC9201212292000 (name+title). Key = MD5(password) = 98e63e547a17c72c10df2d439afc5035, used as a two-key 3DES key.
Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 64 GUIDs as hex (shown below).

Decrypted: GUID list

  1 02481255-f077-83f5-8d20-698a12da8963
  2 9c4f7338-8bb5-830f-ba0b-220a6f60616f
  3 188f4ef5-eacc-1581-9fe9-e56382056f81
  4 af6c3f98-2c1b-4d0e-8118-0e7a78ca2e83
  5 aaefa5b3-7eb0-5594-b40d-800eecedb54e
  6 d04ddb6a-4ef4-1522-bfda-ee3a8a79721d
  7 f7451300-b51f-2a31-815b-09d77cef23cc
  8 57e2171c-fbb0-33c1-a0c9-10599a2c860f
  9 c5171b8a-98bb-8979-870c-9a2c453a2168
 10 a1a844eb-3b12-7918-b7b7-5430015d5ae9
 11 93f56ca9-2b8b-82a8-92d9-783c0acab264
 12 99f3d0a3-6137-039e-abdc-f54779902150
 13 74257327-a306-206a-849f-b3871459cec6
 14 a80bd0d2-f9cf-342d-bd2a-1d3531520700
 15 6eede4b0-7e92-8db0-bab9-0b2d3942a3e8
 16 86d6faea-2f90-4f9b-964c-044e12b084f8
 17 4f42900a-720b-7128-a420-82c37eac934f
 18 dc8e835d-b0aa-72f9-9678-9279e87ba8d5
 19 2033462f-2e1d-51d5-b1ed-2cf27b2c8039
 20 89adb347-a129-69eb-81c8-7d05fc942907
 21 5a8237b9-1421-188d-883d-078048630640
 22 cd9a2071-0547-5938-9ac7-3c0673e95e75
 23 14e1bcac-b7cd-6957-a9bb-5a60b49634c3
 24 7856dc3e-355c-1b51-93ce-358ed14db408
 25 154d9cff-45a6-4958-aca3-821769922578
 26 7eed30d1-2c97-0fd4-9ce7-61d3563ad3a1
 27 b48bf06f-168d-19fd-a0a5-353f9dbfe1f6
 28 bd2c69eb-9f1b-244c-92f1-ff6bba8a29a1
 29 712ff9f4-b621-47de-9000-8c986e1a1028
 30 ef0a6183-93ec-24a0-88f2-535b8f7d1a2e
 31 b0fb08dc-263b-07c0-a5c1-2d0b7a2a2b59
 32 9449a145-fccd-7872-84c6-e26d39b91b16
 33 38da2e16-2d30-4d03-acf8-7424c9dc6fdb
 34 270f5a3c-458e-7f5b-ac32-a7f42bedee58
 35 8e1e565e-ecb5-5777-959f-612caecb562c
 36 78218f8b-ae1d-2ca7-b30a-a79993af317e
 37 b362f314-b4b6-628d-9e34-462b80e151a2
 38 20f9ed94-7fb0-4d6f-a62b-63f493cf682d
 39 cc0c8498-b533-3395-8932-d3664224ea12
 40 b39a0a59-65ad-8d1c-b875-4619d7338952
 41 adfeb705-c5db-410b-a8f4-f591833f4240
 42 f7b77649-cf22-5df0-8bd6-f5cb38effb9b
 43 cff6ffbc-1621-63eb-9a62-f32eda3babe7
 44 44c4133a-34b3-0515-9393-eb3364f42e68
 45 2cb52d28-e101-8ce7-9388-16177e0f4c58
 46 fbeecc17-d490-3d81-a0fd-8c810faffe05
 47 fd371229-4c15-0777-bab5-6074a0f42bde
 48 ca0d7d79-0d30-639a-b89e-7290c68e2b0f
 49 89f9cc0c-6ff5-7709-81b1-8bee47abac49
 50 a41281f1-3c96-1825-b2b2-ac2b44484c82
 51 3954c5c5-9d49-844f-b957-4b32db19f860
 52 99944fd9-d0e9-5e1f-9486-7950281919ef
 53 c81a5815-2bb2-36b5-adc7-af5a803cf034
 54 5cd6c472-5d18-6e2a-9979-c375b02f59d8
 55 02744b39-e4fd-23ff-8fff-0f1e922bbce1
 56 5ce259c6-2af2-301b-bac6-634170dccf97
 57 9120e814-8afc-2783-90b2-370a3132398b
 58 1f272ea0-6cc0-0f01-8193-e659a5b452a7
 59 5cd9914f-dba4-8018-8fc5-1c3b3c093661
 60 671ed99b-a832-5717-9a44-a23db088edb6
 61 fdf41470-a247-886e-9c1f-cbf1cbd8f3e3
 62 627a34f9-2a70-0f08-a82d-3d9bca7e02f5
 63 1da8fc89-a943-8243-a117-0d63c63e50c1
 64 a657b9c1-fe8a-6457-90ec-15f037c3d470

Explanation

Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives 8814512387802384775615614012420747526438456083067185362320858086. Exactly this sequence comes out of new Random(590).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. Part of Fixed N=64 (Dec 2012 - Jan 2013): an app start that posted N = 64 every time.
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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