Abstract: Communication and validation of information transfer from a transmitter to a receiver is achieved by generating a cipher (400) from a message m (410) using parameters of an elliptic curve, a generator point P (406) on the elliptic curve and a public key Q (416) of the receiver. The cipher includes a first element that is the product kP of a random number k (404) with the generator point P and a second element that is the product of m and the x-coordinate of the product kQ. The message m is generated from two mathematically independent representations of the information and, optionally, a random number. The cipher is communicated to the receiver and decoded to recover a message m? (502). A validation token (500) is generated by the receiver and passed to the transmitter, which validates communication of the information to the receiver if the product mkQ is equal to the validation token.