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Crack my encrypted string

Discussion in 'Programming' started by TomN, May 12, 2007.

  1. #1
    I am providing the community with a challenge. I wasn't too sure of any authority encryption forums so I posted it here.

    (If anyone can point me to an active encryption forum with smart people in it, let me know please).
    SEMrush
    The following string is encrypted/encoded with a unique algo I developed.

    I WILL tell you, however, that the encrypted string is a URL. If you need it.


    It uses a public/private key combination. The private key is 33 bits long, while the public key is an md5 hash of a modified unix timestamp.

    Here is the encrypted string:

    1ß7ö90í1Ý3¦7õ02I‘C1æ=‡øýŸ9ÍÚÀÐÔΧбýÌèÅÞ

    And here is a base64_encoded version:
    ADHdN/M5DTDCMd4zojj6MxI3SZZHAxc9iMb55cwIyA1BxRXO2anRpdex/crly/If2g==

    I'm wondering if anyone here can crack this encryption. I made the algo in PHP so you can use PHP to crack it.

    Looking forward to constructive criticism, and post your questions or request some hints.
     
    TomN, May 12, 2007 IP
    SEMrush
  2. venetsian

    venetsian Well-Known Member

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    #2
    Ok.. How much will you give me to crack it? For Free and Fame I don't do shit!

    Cheers,

    Venetsian.
     
    venetsian, May 12, 2007 IP
  3. catyack

    catyack Active Member

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    #3
    catyack, May 12, 2007 IP
  4. TomN

    TomN Peon

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    #4
    catyack: no you're wrong. Guessing the answer isn't cracking anything.

    Ok I wasn't planning on paying anyone anything, but I will paypal you $11 USD for successfully cracking it AND telling me how I may improve it further.
    I appreciate the responses.
     
    TomN, May 12, 2007 IP
  5. venetsian

    venetsian Well-Known Member

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    #5
    Ha ha ha .. for $11 bucks i'm not going to move my mouse .. :D

    Let me share with you some cryptography faqs:

    1st. You/NO ONE can decrypt intelligent algorithm by knowing only the pass-phrase. Algorithms work in different ways and there are unlimited number of possibilities so .. if you don't have more data .. its virtually un-crackable.

    2nd. Defending your algorithm is more important then defending the data or the key because if someone "gets" your algorithm it is now crack-able using brute-force techniques.

    3rd. Who cares what you transfer ? You have to be transferring government secrets or bank accounts with millions so that someone will try to do something ... other than that a simple CEZAR or better known as ROT13 will work well. Also ROT13 is built in function to PHP so you won't need to use additional library

    That's it ..

    Cheers,

    Venetsian.
     
    venetsian, May 12, 2007 IP
  6. TomN

    TomN Peon

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    #6
    OK. thanks for the insight and the FAQ.

    Nothing is virtually un-crackable. You just need the right tools and the intuition to do it.
     
    TomN, May 12, 2007 IP
  7. plumsauce

    plumsauce Peon

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    #7
    Strongly disagree

    The point of all cryptographic efforts is to prevent decryption of the content even given full knowledge of the algorithm or access to other known plaintext transmissions using the same algorithm.
     
    plumsauce, May 13, 2007 IP
  8. micmicmic

    micmicmic Peon

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    #8
    ROT13 just encodes it (well hardly even that), which is completely useless as anyone can decode it. If you store credit card details in ROT13, you're very foolish as there are people who will go after it.
     
    micmicmic, May 14, 2007 IP
  9. venetsian

    venetsian Well-Known Member

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    #9
    That's true. Rot13 just shifts all characters 13 positions left or right and that's it.

    For credit cards I use Blowfish. If you want nice php code on it PM me ..

    Cheers,

    Venetsian.
     
    venetsian, May 14, 2007 IP