Alice Does a Secure Lucky Dip
Published in
3 min readAug 20, 2019
And so Bob sets up a Lucky Dip competition, and Alice wants to play but doesn’t trust anyone to pick for her. How can she do it? Well, one way is with Commutative Encryption. For this, we create encryption, where we can apply the symmetric keys in any order, and then decrypt in any order. Thus the cipher might be created by encrypting with Bob’s Key (KB), and then by Alice’s key (KA):
