201209241413 10ej75
explained decrypted filler
3DES(name+title) ECB, 58 GUIDs, seed 393
From the post to its content
As posted (encrypted)
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
- Read the ciphertext. Strip whitespace: 3,728 hex characters = 1,864 bytes = 233 8-byte 3DES blocks.
- Derive the key. Password =
A858DE45F56D9BC9201209241413(name+title). Key = MD5(password) =d53c1aba23697525d479447a9a2007b4, used as a two-key 3DES key. - Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding. The plaintext is 58 GUIDs as hex (shown below).
Decrypted: GUID list
1 221522c0-6ec9-0a37-b783-d975fcc755a0 2 bd55b10c-359c-1687-8f20-6bca9196c5bb 3 3360212f-87f0-4ed0-b365-3a4550c0f2c9 4 74b0d692-1cbe-383f-8c5c-5c4152d41f90 5 7d6e32fc-5076-54c9-83d7-751b3069b34b 6 a3ada5c9-8ad8-0f81-ae05-fa828be2a25d 7 3bc6d1c1-4854-83ed-abf9-cc26f11b51fd 8 41187cbc-c1e6-5d65-a69e-0febe33a9d6d 9 7f25955b-457a-59c6-84af-71b085a14623 10 ba492100-2f87-1840-b867-872adea83c83 11 819b3938-b6eb-7ed5-acb8-39b2025d4b48 12 dda0aeac-fe7f-2d3f-a916-5774c2b08f92 13 23f00ef0-f452-7b6b-abd1-2618c34be36b 14 db9a1fb8-893a-8e80-a8d1-bad2071c2750 15 5acfe574-209a-03dd-98c3-ee44378c3355 16 6e363044-b0e0-4176-8435-1c93ed2a6ee2 17 f48587a8-750d-0554-8f15-67ea2551f01d 18 a7f53d2a-5742-54b2-babf-3d69e73a9906 19 bc5d173b-9288-2ba6-b963-5df2fbe59ef8 20 c29f9f32-e54a-42f8-aba4-92b6249cdc1d 21 d176d253-5f07-0a45-9234-b47cda5abdc7 22 34db675d-dd50-28a7-8745-472952da430a 23 5d675953-75ea-33d5-b8a7-c0d4a21d26c5 24 32378795-4007-289a-9448-29d1f55600b9 25 d8388f1c-52fb-198e-9d02-e0aaa2fa8187 26 858732c1-e588-2307-b54d-7e2930566462 27 49c09584-7021-7adc-9d00-4653a93c46f9 28 fadb685c-1b65-13f9-9689-85a6c5d688c3 29 b57d61f2-59a9-0fe1-aa24-1005c45968ea 30 9c443238-d2d0-5bb9-8bae-33089554a67a 31 2fedb971-33ce-2be3-bf25-4be5bab4dab2 32 7a566471-5799-81ae-ae74-94e060425b9e 33 da38e575-b14d-2d15-870f-f6190ff23a37 34 bcd3dc6a-4234-7b86-b3c7-6b70b2cd5bcc 35 9d58ef28-3af3-7f9b-b589-594bae2c3346 36 ccded615-867e-76c1-a4bf-dd5a9c8c8769 37 efbe1bfc-6c49-5343-a814-3cd23086c6f0 38 787526b4-ec7d-1133-85d4-d0868ca4b3a9 39 ece5a638-42c5-5527-9bc3-ca8019b2afad 40 78393617-8ea0-0956-bc22-fbdbb5adf899 41 287ce937-7b4b-10ef-b8ef-524b7443ab12 42 ae6da12a-732e-8cc8-9b13-e1a0f235b91c 43 c227109e-517c-81cc-86f3-f2304bd88603 44 dd229fc5-c36a-66df-8f35-5c7c5ee258cb 45 34718adb-89e5-03cb-80ee-03e52d0eb4a7 46 71ebc06c-18f1-7674-ad9c-cc275d47432a 47 01426b32-9651-081e-a005-8066120eae88 48 dd5f097a-944a-570e-a33e-563101dac648 49 1a82d407-39a5-42db-8498-0f89f7961722 50 b752d64a-4228-1d1e-9b35-b1cb7e97f018 51 68b80d9c-136f-0255-82d6-fc15d98e2637 52 eec73337-2d30-7607-b2f6-47d1f2163704 53 98181def-2e27-269a-bf5f-bca8fede4765 54 81c5e301-cc19-465c-bfa8-cae76eb19a08 55 d6ab88fe-1c22-7a5b-8c0c-c9143e7ff093 56 a376b580-d38e-6368-a921-a62602868019 57 6ac571a3-2564-6469-8ae0-f98a808d10fd 58 c3761113-f6e6-1c79-b7f1-fcd89d308fbb
Explanation
- Explain the mask digits. The version nibble (13th hex digit) of each GUID, read in order, gives
0143508551727804052402321271052827775150188607054107247661. Exactly this sequence comes out ofnew Random(393).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 238 of Run 34 (seed 83,105,000):
new Random(83105000), Next(8,64) per post. The RNG predicts N = 58; the post has N = 58 ✓. The seed is the machine's uptime in ms when the app started (boot 2012-09-22 10:23–10:24). - Conclusion. Filler. The content is fully explained by the two RNGs.