This figure uses the first process from the figure above, labeled "Alice sends e-mail message m," however here, rather than sending her message to the Internet, she sends it to a white box labeled KS(.). A blue arrow extends rightward from this box and then downward to a circle labeled "+." Below this is the public key, KS. A blue arrow points rightward from the key to a box labeled K B+ (.), and extends rightwards then upwards to the circle labeled "+." A blue arrow now extends rightward from the circle to the Internet.