Seeing the Light of Security…

A recent article in DFI News discusses some interesting research. The article discusses research by physicists at Heriot-Watt Univ. and Univ. of Strathclyde. They are working with tiny particles of light to create a new way of verifying electronic messages and transactions as authentic, helping address the huge cost of e-crime and avoiding potentially catastrophic fraud, online hacking and theft of digital data.

According to the article discusses how the research shows how photons can be used to verify security and authenticity of any transaction or communication with a “digital signature.” The article specifically states it does the following:

Quantum-based secure signatures mean that an “eavesdropper” — a malevolent third party listening in — cannot fake a signed message which is being sent to multiple recipients.

  • The sender writes the signature with encoded light particles and sends it to the receiver
  • The receiver cannot yet read the signature. However, it can be sure it received an authentic signature
  • To confirm a message is authentic and to also read it, the receiver has to receive both the message (the “signature”) plus additional information required to decipher it
  • The multiple receivers confirm that they have received identical signatures – only then does the sender provide the additional information required to read the signature
  • This process takes place without the user (e.g. a shopper) being required to do anything differently to current security methods

When physicist begin looking at how they can impact and improve e-commerce, you know there is a big amount of money at stake. It will be interesting to see how this can be implemented in the real-world and also how it will be circumvented…


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