A858DE45F56D9BC9 archive

201112281640 nu9l9

solved decrypted manual

Figlet ASCII art of the name. 3DES, key MD5(0000DE45).

Metadata

Post ID
nu9l9
Title
201112281640 → 2011-12-28 16:40 on A858's clock
Posted (UTC)
2011-12-29 00:36:24
Timezone
UTC−8 · title 16:40 against posted 00:36 UTC
Author
[deleted]
Account
A858DE45F56D9BC9 main account
Subreddit
r/A858DE45F56D9BC9 the main subreddit
Category
S solved special
Content
Banners and statements from A858 as itself
Size
1,296 hex characters · 648 bytes
Cipher
3DES-EDE2 (two-key Triple DES), ECB, PKCS7
Key
MD5(0000DE45) = 68c0bf44a604433c859df970a4a29f72 (sidebar value)
Sources
arctic-shift · body from arctic-shift
Links
Reddit · Arctic Shift · JSON
Score · comments
10 · 4
Tags
pre-automation2011Solved special postmanualarctic-onlykey: sidebar valuebanners and statements from a858 as itself

From the post to its content

As posted (encrypted)

6CA2078DCFBC3EB7  91FC135180B618B5  91D1BC66AC9C1B12  13CC7DE6C027E8CC  81A2BF014749317F  4551D45EE7F424B0  81A2BF014749317F  4551D45EE7F424B0  7D64B0ABFC0DF7BE  57D5FF81DAC68436  324DAA6F8596A749  16C7E5C2619CB4DD  B0D0341B3BA8FB3C  5542FFF1D74D27F4  0F8683219C9A7985  FE9AB04A11C6DD73  64B3EC2F1F5D10DE  3ADE63A5ACE4453C  E00285673AA73248  E95BC2938F074736  1C37230CEF5AD17E  C7EDB68A93390400  90046D5FE59520A8  92E5122A1E850C30  363725AA6A5F25D3  363725AA6A5F25D3  1B9DC3C8A942625D  F1DCB80DFF98FEF3  FE8FA854911BE592  86289089FB6353CA  A8AEDB61B2EF00F6  8B17BFEF19C0A63F  444994B897A723C4  540F17908730C48B  B2758BBE99CB89EE  51B03787A1B88498  F2100EC70938465E  828BC61CEFDB30AE  D991AF1E36991D35  0A13D05206035142  674935FF3FACBF92  4D7051FEDEE15711  F3E13052DC2A8238  4FE2895AE9F51550  152276730D9187C4  B82A1B528211B47F  6448454E15D4BB6F  A7FF3902610E2DB0  409F661CF2D2DEEC  851E8EC071E0DCEB  FC109919E64A5B53  C12714E5A0CBCA5D  B0A65E134F228EDC  9D6A1CB14DC8096D  ACEF0D36537B23C9  05FB4645FEF481A3  5C34325A0286AC7A  0D071E806DFA92B4  DCE8A3F7B0CC7C86  FA9586061E06FD58  FA9586061E06FD58  DFE051BC6A0776D3  F59C833EF0D1CBCC  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  20546F3DC616E0A1  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  91D1BC66AC9C1B12  83065323E8A4A47E  FCF84CE619520529  87EC21F03B79F2D8
  • Derive the key. Password = 0000DE45 (sidebar value); key = MD5(password) = 68c0bf44a604433c859df970a4a29f72, used as a two-key 3DES key.
  • Decrypt. 3DES-EDE2 in ECB mode, then strip the PKCS7 padding.

Decrypted

 __  __  _____           ___       ____    _____   ____    ______     
/\ \/\ \/\  __`\       /'___`\    /\  _`\ /\  __`\/\  _`\ /\  _  \    
\ \ `\\ \ \ \/\ \     /\_\ /\ \   \ \,\L\_\ \ \/\ \ \ \L\ \ \ \L\ \   
 \ \ , ` \ \ \ \ \    \/_/// /__   \/_\__ \\ \ \ \ \ \ ,__/\ \  __ \  
  \ \ \`\ \ \ \_\ \      // /_\ \    /\ \L\ \ \ \_\ \ \ \/  \ \ \/\ \ 
   \ \_\ \_\ \_____\    /\______/    \ `\____\ \_____\ \_\   \ \_\ \_\
    \/_/\/_/\/_____/    \/_____/      \/_____/\/_____/\/_/    \/_/\/_/
                                                                      
                                                      A858DE45F56D9BC9

Explanation

Solution summary

Method
3DES-ECB, key MD5(0000DE45)
Result
figlet ASCII art of the name
Explanation
Recovered
Re-checked
3DES MD5("0000DE45") -> figlet

Related

Findings: Sidebar values