You are creating a security product that must facilitate the exchange of symmetric encryption keys between two parties that have no way to securely exchange keys in person. What algorithm might you use to facilitate the exchange?Group of answer choicesVernamRijndaelBlowfishDiffie–Hellman
Question
You are creating a security product that must facilitate the exchange of symmetric encryption keys between two parties that have no way to securely exchange keys in person. What algorithm might you use to facilitate the exchange?Group of answer choicesVernamRijndaelBlowfishDiffie–Hellman
Solution
You would use the Diffie-Hellman algorithm to facilitate the exchange. This algorithm allows two parties to each generate a public-private key pair and share their public keys with each other. They can then use their own private key and the other party's public key to generate a shared secret key. This shared secret key can then be used for symmetric encryption. The security of the Diffie-Hellman algorithm relies on the difficulty of the discrete logarithm problem.
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