3 Responses to “Public Key Cryptography: Diffie-Hellman Key Exchange”
I enjoyed your Public Key Cryptography video; the color-mix metaphor is a great one I have not heard before. I write to provide feedback on one element of the explanation that I felt was unclear. At roughly 4’30″, the script reads: “Alice takes Bob’s public result (16) and raises it to the power of her private number (54), which gives 3 to the power of 54 x 24″. Except one quickly realizes that 16^54 does not give 3^(54*24). While it is true that 16^54 mod 17 is congruent to 3^(54*24) mod 17 (the ultimate desired result), I found the wording of the script at this point of the explanation to be confusing. I suspect there is a clearer way of illuminating this key aspect of the process, though I humbly confess I do not have one to offer.
Thank you for your inspired effort, and keep up the excellent work.