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You are here: Home / Cybersecurity / A secret message! The fairytale of DKIM

A secret message! The fairytale of DKIM

by tunc
April 16, 2019April 16, 2019Filed under:
  • Cybersecurity

Once upon a time, the brave and handsome king of Rubrum Colatorium decided to send his beautiful and wise queen a message from the battlefield.

With enemies lurking all around, he needed to find a way to make sure no one got his hands on the secret communiqué.

He put his letter in a box, and put a padlock on it, for which only he had the key. When the queen received the box, she put her own padlock on the box as well (for which only she had the key) and sent the box with two locks back. The king took off his lock, and sent the box forth once more. The queen removed her lock, thereby opening the box. The box was always locked in transit, the contents secure.

This is exactly what happens in asymmetric cryptography.

DKIM (Domain Keys Identified Mail) which uses asymmetric cryptography, is one of the underlying technologies used by the DMARC protocol.

If you would like to learn more about DKIM, DMARC, and how they can protect your emails against spoofing, contact us, it’s what we do!

Stay secure!

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Tagged:
  • cryptography
  • DKIM
  • email security

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