Information Hiding Based on Two-Level Mechanism and Look-Up Table Approach

Information hiding can be seen everywhere in our daily life, and this technology improves the security of information. The requirements for information are becoming higher higher. coverless with help mapping relationship has high capacity, but there is still a problem which secret message cannot find process requires extra storage burden during transmission. Therefore, on basis symmetric reversible watermarking, paper introduces two-level mechanism novel arrangements to solve sufficient diversity features better capacity image quality as whole. Besides, message, designs new encryption model based Logistic mapping. This method only employs one carrier transmit look-up table. Reversible applied embed generated location table original so that ensures security. experiment certifies hash code increased by using excellent, proves advantages proposed over previous algorithm.