We are convinced that the gfp container format is secure. However, with this challenge you can prove us wrong.
The challenge is about decrypting the given media file without giving a password.
If someone can decrypt this media file, I will upload the complete sourcecode of the current version of the GreenForce-Player.
1) Download media file
2) Decrypt the media file
3) Send me the password or the decrypted video
What is the prize:
The complete sourcecode of the current version of the GreenForce-Player will be released to everyone.
GreenForce-Player
Is the gfp container secure?
- RocketRider
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- Fluid Byte
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- Location: Berlin, Germany
Re: Is the gfp container secure?
This challenge is pointless. The player has to read the file anyway. So you will just debug the player and check where password check/decryption occurs. No one will even bother looking at the files but rather for the decryption in your program.
Windows 10 Pro, 64-Bit / Whose Hoff is it anyway?
Re: Is the gfp container secure?
Right, and then ripping the code and do a bruteforce attack on the file to get the password.Fluid Byte wrote:This challenge is pointless. The player has to read the file anyway. So you will just debug the player and check where password check/decryption occurs. No one will even bother looking at the files but rather for the decryption in your program.
You can't do anything against a brute force attack except having long passwords and a slow encryption algo.
Re: Is the gfp container secure?
> You can't do anything against a brute force attack
What about a Captcha in the password input routine?
What about a Captcha in the password input routine?
I compile using 5.31 (x86) on Win 7 Ultimate (64-bit).
"PureBasic won't be object oriented, period" - Fred.
"PureBasic won't be object oriented, period" - Fred.
Re: Is the gfp container secure?
Captchas are just annoying for the user and could be just patched out by a cracker.PB wrote: What about a Captcha in the password input routine?
Re: Is the gfp container secure?
Just the password wouldn't matter, but I guess if someone could return a proper unencrypted media file then that would make sense.
( PB6.00 LTS Win11 x64 Asrock AB350 Pro4 Ryzen 5 3600 32GB GTX1060 6GB)
( The path to enlightenment and the PureBasic Survival Guide right here... )
( The path to enlightenment and the PureBasic Survival Guide right here... )