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-   -   Help with AES 128 encrypted file (https://forum.exetools.com/showthread.php?t=19002)

phroyt 10-24-2018 16:44

Help with AES 128 encrypted file
 
Hi,

I'm trying to decode a file encoded with DEC 3.0 library (Delphi Encryption Compedium Part I).

The key is a SHA256 hash:
HTML Code:

  d90cwjipoybs3usoh6bs0yn53jk0nlijyy3eocr1lmp0hbdv8o1u3fer7m8bgcpz
It's croped to 16, to fit the maximum 128 key size.

No matter how I try, I can't decrypt the file.
I know that its a simples XML file.

Looking into the code, I suspect that it is using:
CTS Cipher Text Stealing, a Variant from CBC, but relaxes
the restriction that the DataSize must be a mulitply from BufSize,
this is the Defaultmode

The encrypted files are here:
hxxps://mega.nz/#F!EgRVxCjY!ouEuDqOomGT3hesB1rl_Cg

Does anyone have a clue?
I can use any high level language: C#, Delphi, PHP, Python, Perl, etc.

Thanks

ketan 10-25-2018 06:34

Key can be unicode, include trailing 0, plaintext can be compressed etc etc.


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