Date Added: Jun 2012
Information security has become a major issue as information technology is ruling the world. Cryptography using mathematical techniques is providing information security but requires complex algorithms, intensive mathematical computations and efficient computational resources. To avoid such intensive and complex algorithms a new scheme known as Visual Cryptography (VC) was introduced by Naor and Shamir. This technique allows Visual information (pictures, text, etc) to be encrypted in such a way, that their decryption can be performed by the human visual system, without any complex cryptographic algorithms.