Two Complicated PKs to Protect Secret Messages

Abstract

Increasing the message protection degree is a vital issue. In this paper research a new, simple, secure and efficient method of message cryptography will be proposed. The method will use two private keys for encryption decryption. The first key is to be generated from a secret image_key; the second key is to be generated using chaotic logistic map model. The two key will form a complicated complex key which cannot be hacked, thus will secure the transmitted messages from being hacked. The PK will be very sensitive to any changes: image_key, selected image color, message length and chaotic parameters. Any minor change in the decryption phase will generate new PK, and a corrupted damaged decrypted message will be produced. A set of analyses (sensitivity, quality and throughput) will be performed to prove the improvements and efficiency provides by the proposed method.