Binary Affine Crypto System using MATLAB

  • Status: Closed
  • Hadiah: $20
  • Penyertaan Diterima: 1
  • Pemenang: bxh323

Ringkasan Peraduan

This is a simple implementation in MATLAB.
You are to implement in matlab to encrypt, decrypt, and attack the following crypto (using the Binary Affine Crypto System):

Yi = (aXi + b) % 256
Xi = (a-1Yi - a-1b) % 256

Where {Xi , i = 1 : n } is the input plain bytes sequence, {Yi, i = 1 : n} is the output cipher byte sequence, and a, b are the key bytes selected from {0, 1, 2, ….255}. Please notice that a must be invertible in Z256

To test your routines, you need to encrypt a jpg image file and decrypt the resulting file. The implementation should be able to decrypt without explicitly mentioning a and b that are used for encrypting.

The provider with the fast and best solution will be awarded. More work to follow based on this submission.

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  • AjayBind58
    AjayBind58
    • 5 tahun yang lalu

    make a project and award me. and i will done in next 10 minutes after awarded. thank you.

    • 5 tahun yang lalu

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