The present disclosure provides a system for securing wireless data communication. The system includes a launcher and a projectile. The launcher has a random number generator, a launcher memory, a launcher encryption/decryption module, and a launcher transceiver. The projectile has a projectile memory, a projectile encryption/decryption module, and a projectile transceiver. Both the launcher encryption/decryption module and the projectile encryption/decryption module are configured to use the one-time pad to encrypt and to decrypt data. The system is configured to establish a temporary datalink at a point in time in which the projectile and the launcher are substantially collocated so that the one-time pad can be transmitted from random number generator located in the launcher to the projectile memory using the temporary datalink.