• anonymous
How can we make digital secure module for land telephone line???
MIT 6.002 Circuits and Electronics, Spring 2007
  • katieb
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  • anonymous
Very good question I'd love to know. At the high-level design stage we need to do this: Analogue-to-Digital converter to Modulate (and Demodulate) the signal Then process with a cryptographically secure module Arrange a secure method to share the encryption / decryption keys Try it out. Are you thinking on your regular phone (PSTN) ? Are you thinking using a public key system (asymmetric) or a secret key system (symmetric)? cheers

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