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Cryptography Using Modified Fractional Fourier TransformKernel

Cryptographic Method Using Modified Fractional Fourier Transform Kernel

This technology is a cryptographic method, using at least one component of a modified fractional Fourier transform (FrFT) kernel, that enables an encrypted message header to act as an electronic signature. This method encrypts digital signals by the sequential action of a modified FrFT kernel. The encryptor key is a set of positive numbers controlling the phase, angle, exponent, FrFT kernel, and wavelet family. Decryption is achieved by reversing the operations.

 

Abstract: 

Click to view PDFs of these patents on the US Patent and Trademark Office website: Patent 6,718,038

applications: 
  • Data processing and analysis
  • Secure digital communications
Patent Number: 
6,718,038
Patent Issue Date: 
April 6, 2004
Email: 
tech_transfer@nsa.gov
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