Password-authenticated key agreement

Password-authenticated key agreement is a way of making sure that two people, who are using the same password, can make sure that they are communicating securely with each other. It works by using the password to create what is called a "key" – a special code that only the two people who know the password can use to make sure that their communication is secure. When the two people who know the password want to talk to each other, they use the key to create an "encrypted" connection that no one else can access. This means that other people trying to access the conversation won't be able to understand it.