201207061639 w5aem
explained decrypted filler
3DES(name) ECB, 57 GUIDs, seed 859
From the post to its content
As posted (encrypted)
180BDA2F950DDE03 64C2BAD85DAE97DC 05EBD6616C13B58C FCF4D3C42F524B39 FB46DB5AE6993240 4D946E9E3EF07277 EA29110C14018809 C863B80D146B2919 7D433C043CC0422C 676DBE64C1932C67 07D86793220ACF9A B5FA8BDB8595E7D3 2FB5CFC544D09EAB D5620171EABA7500 CC0E050E346249FF E7B318E15F7E738F E591AE044493778B 053A42F8E92867A7 7D6DF79F3126574A DC5679AE6E9A7B37 EB23BFA500C612C9 B10B7FFDD1212872 BC508F128E64AAE7 ACC6E18FEE90AB6B 7EAD24E860A61770 51FB5C6808671B96 F55FA9EBAEAF64F2 741A648932D279B7 118646B7BCA0546E 701EC9B86B55FBFF 546D54B9A4FFF142 E5950942A58D13CA C3311140829BDD1E 4274A55C54F38A1A D92C04C6AE54DDE4 F57EE473185DD7DA C67764F933657559 9A4A82F8C7C578B2 69A520FFEA7FB65C 97F64795E99FD67F 73B8880C3B8815F3 76222BF0B147E458 E578DCE20660F44E 0E826D75C9ABBBF2 F7D050C029828AE2 9330EFA28900783F 0578BD6F82126D26 CDC356F3220FF665 8242333778CB3428 EA2AA075AFC35AB8 A45CCCE90F42CF52 CA8FCFCE0C0F38AF 657C2AE8204A02DF D12078164377EE87 8B2CFD5D8BFC744E 89ED29A24F1797E1 91DD19D2DD5BBCF9 1903DB263DAF53F5 178613937BF57948 A09412ED22B3D1C5 9D332EC01EEFE4DF 15982F70F41DFC19 2C8F6A298C41E8C8 B7ADE3BCDC276333 F8F3BD2621AD447D 098EC9D6856321D6 AA1A630EFDC13D83 6904AA6936980C14 F95C20F8B4FC3617 797BA36F2768F453 C673F7E087FDAD73 559EE2483315BAB5 E4E510F61017142D E9F49BAF7AE005D6 372C6665B3869C1B 942CE381C2C5AC72 75DEDACE9CD38853 029273950D263C8A 07A5DE225123AE5C 74CB5E3B45C6CCE0 4B5FAD0FE49ED5AC 045A28D7324D040F 75C5866FBD279D5A 9AA67A39F5C7A0A8 2DC6775115F8B96E CE888CD561034D1F 4F1341FFC3154390 1C9120523E856B7E 36A97BACD3F91A1B F5EEE9F68B58831D 42DD3EA1087F1BD6 41CAE8DDF47AB756 8B77239E394DFA40 2154A944F3DBB472 528EF9ED60CF1755 BEB1AF9E0AE0F0F4 131E1896C9F747BF 46DD0227C287B47E EE5BCF2967BDE2FB 7104B297D95A7C46 ECA5F008FFA07A2E FB7EA8B3712736DC 47ADFEBAEB53DDB6 E9118751D08A8C66 E4129E6346E226E0 909888ADE2393331 FBBB9E349E71DD80 4C25166A8B505102 FF57F085FF0040AE 586C9941A0A29F44 5F16DEF10E8CEBDD 901C9E62B2DF1953 E3CA7E7095695C40 22E370EEEEDA0A34 5267079D46F4361F 7B961B4430A16809 6C2B0EAF8E4E1196 B320F3CFBFC828A8 27EBCD6424B57267 59F3C3CA9BEB4073 66CAE264236A43B5 B98E803854338946 2B6312A3EF5538B7 830E88A91290DDB5 FBDC43C1E020ED5E B2D0165165AC1F3B 5A3378E20A29B059 6D759373C4F6091F C9FD35C9BEC5A077 88BB9F8E07BF0869 74F6BBC38BFFF997 3674D21347E70C78 8FC13B81B8E118E6 EA882BCF0F872A1C 5C1DDF7977B5C5D7 F71896CC020DE73F AC46A18F0A8E11E1 C3526FE4D2A4F4D5 79D704678D572476 AB1A2CC3CEDEE450 C5B2FEE1E54E4818 1058FFEF9B6B1CB5 BA4FBCBFC51D11E0 DA4F7E90395BF1CC 908001123EBBD5B3 2AE400B61E1DD311 CA9C660156BF8279 3A67507162C18AED 5009E043B25FD340 A8883A75C59817AD D5D276AA47B3E458 C97A48D8B61272D7 794AAD85F7E3701F 58356B6CFE13CAB7 D19CBC5CD587F454 FDE5A4120BC1C6D5 6FDE92C36ADFE859 08FF6A92F7B31398 D63D6C3C4C2443F6 726CBE0C0474DDBB 57F0B03950B08261 30291F2AB4334B10 0575886154563807 F770D99281205394 F194B925AAC12E55 3BB033BC86309A1E FA5E1F0B2ADE7863 1CD0D3DF42D57992 EB9E1803B597D11E 0478FEC03826AD4D 660C0656FE3E1FA0 99024F98F55ACA2A E17FCF88620D7467 43E8F776B1FE59B3 3AE800CC4C7740A6 E9A67C629CCEEC9F 197DABEBAD758AFE ABB0B623B073CAC7 13A93518D6E15131 7211CD7E70CB30CC 816E2E311728EE03 02CC1250948037FE 0C4DBE72C314595B 2D4E32F2B98308E4 880438AC33BCB05A DE66169B86F1BB33 A7A82E83C59ACF1D 2D5FFE1E44C7D767 3A9B9B92DFF9D39C 7CD1E3C2A54C1632 44F7B935C995E95E 40ECD59EA1334D8B 74F251CDABD40CFD 5CC25AA161E801EC 80DD55A9AD75E7D4 F6CCD3F59BC5E0DC 6B9C496C35440824 8FD888D86A8575D6 5A63BFAF52A7327F 2BF2439F25B84134 73983662CAC194E6 6FF3CCD696ED70A0 1C15838AE31B88AA 24AF1DFC0A241217 D1B67612FE177874 B7D1500B66B6E46D 752102D427F24927 FC35077961701651 2BE3A8B8EDF75541 59AF54518B7550DF 394A700B7A373774 3FC6C2CFB61F2604 C3E4AE54150019B6 09F8384CE2ADB2EB EF823F3276159367 4DC9F37E372B30C9 7014104C0EC36CDC 4309A41F70EFFB3A 037E1A0A19DC8738 AC9BABA3B4523149 5881B73B8C789A82 EC1DD4D08E72CE79 935D685A38B13F7E 9C5932ED779D62DA 67DE40F68C151F0E FDB96CE6EBAA8F67 DAA44245E34E4970 BCB2BA32C00E53EC 5DACFFBA8FF64DBD
- Read the ciphertext. Strip whitespace: 3,664 hex characters = 1,832 bytes = 229 8-byte 3DES blocks.
- Derive the key. Password =
A858DE45F56D9BC9(name). Key = MD5(password) =34a14a42e98ff96095af56604e290cae, used as a two-key 3DES key. - Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 57 GUIDs as hex (shown below).
Decrypted: GUID list
1 638eaca9-7c40-4e7f-896a-e45dbb366811 2 87258145-86ba-7346-bc6e-35ee39cc38ff 3 235faa94-17c2-1dcb-aab0-f664b3d553e4 4 5d38529a-d9db-80cf-884a-27fde75649ad 5 5bba8cce-223c-0900-910b-4ab44575fa05 6 0490d224-7566-2957-877a-d1304df8645a 7 266ff2eb-69b8-7075-9264-384ccc803b0a 8 a2c35c96-1fde-3ac6-8f92-563bda4cd8bb 9 5776d1e6-c399-2ae2-8992-0737539400d9 10 f26331f0-0155-08e7-976a-7fad8787a10d 11 059dc5f7-f769-1ee1-8499-b535013943bd 12 4ea37d78-de20-0ecb-b3ad-27760f88ab3b 13 f9c8d129-6331-14b7-b3dc-dae467ce33dd 14 3e2afd2f-ae1a-33d9-8b1e-6941b61d6a5b 15 7b43dcda-c068-2d93-b912-83c5c132c25c 16 7e374204-49a7-4ccd-b920-412c656e9579 17 7dc0709c-6bdd-8e25-8d2c-1dc97bb9a4ff 18 5695ac61-0d8f-5041-8311-705dd0f32900 19 bee46250-1cf0-8aec-a11b-916dad0a29c3 20 53bb0848-2e84-8d01-8796-c15c0d2a501d 21 172c0f79-21cd-8dcb-81e2-4dfc0c83bc06 22 86f485ad-0e35-5b38-810c-adac2d7d48e2 23 73e0412e-8562-10f2-96d7-7af8946122d9 24 9ab2210f-3d3e-159e-8d45-d534e50918af 25 e6ad44f9-1a0c-79a4-b1ee-c671851ecf85 26 607c168d-19f8-0d71-a023-bdc8ed5c1eda 27 fded072a-0412-4c0f-a618-5459f5baa8ca 28 a6e31db4-2fe2-8087-90c9-25a37ffd110a 29 2d51fffa-635c-76ed-918d-2075b27cf7dc 30 507dd794-f50b-73b7-9663-ea509d4bd88a 31 34fdf57c-d93e-26b6-8f0f-40fd7d4c1e3d 32 e6a92199-e7aa-666e-a475-ab42ff2bfe8b 33 fb13595d-5391-63db-a47d-81d60e126d3d 34 2f663934-ab82-467f-8fd8-f6ef93a9f262 35 1eef0a4a-86b0-50a5-b113-ced10db8232c 36 459210e3-5fe6-89da-b905-df5f9091753b 37 eacabf36-308a-586f-a892-b418524018c7 38 d2cda935-eecd-716f-9db0-514066b5f93e 39 bf6343b0-7fe6-4d14-ac35-466965ee7dfe 40 f936a06f-40fb-62b7-92d4-c0a1cea7423c 41 a2353d7f-c457-81e6-98e3-0018bde786de 42 e8b6c0ec-c1d5-30d1-832a-7c92b38daa78 43 0c8dfcdb-5381-5130-b53c-ac846edf5218 44 7b699b38-f51e-4468-9eab-b919e5ceff22 45 6f548918-371a-7329-b6e1-e56137f1426a 46 7363943b-5439-22f6-9c10-d4c670224a81 47 67808178-4d7e-512e-baed-fc16f01f45b3 48 882daee4-b31b-8184-9be4-3abe597b46c8 49 65d9ba00-4bf4-0732-b75b-5ad6e8c71828 50 33d4f447-abbd-6b10-8909-6a71e3d8d429 51 7bb61795-d49c-1dca-a622-cd55f046ea38 52 a9671f30-6841-7093-8f8c-2aed27b367a1 53 7ea071d1-6552-8de2-be95-b96c9d0e38ed 54 e8899528-cd68-45b3-89eb-0626592c5621 55 1020006f-c52a-1889-ab15-90d1c6539544 56 9bc64ac9-fcc2-8750-93cb-efad6296d8bd 57 a9fb43cd-ab69-6d78-9c9c-7efce6a3c00f
Explanation
- Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives
471802732010132485888511704877266458574683547258061784186. Exactly this sequence comes out ofnew Random(859).Next(9): the per-post millisecond seed of the mask generator. The other 30 hex digits of each GUID areGuid.NewGuid()output and carry no message. - Explain the count. This post is draw 2 of Run 13 (seed 19,267,593):
new Random(19267593), Next(8,64) per post. The RNG predicts N = 57; the post has N = 57 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-07-06 10:46–12:16). - Conclusion. Filler. The content is fully explained by the two RNGs.