ITR:Information Theoretic Secure Hyper-Encryption and Protocols

该方案的总体目标是研究和实现可证明的信息理论安全加密方法，并将其应用于重要的安全任务，如消息和用户认证和承诺协议。对量子密码学的极大兴趣表明了绝对安全加密的必要性。该方法将利用现有网络传输大量加密数据流。拟议的实施可以在不久的将来广泛部署。对于保护个人隐私和商业通信来说，具有实用的、可证明是安全的、不受任何攻击的消息保密方法是非常重要的。近年来，一种新的加密范式被提出，它不依赖于尚未证实的计算难解性结果。通常认为密码破解者在计算上是有界的假设，被他是存储空间有界的假设所取代。发送者和接收者共享一个小私钥，并使用无休止的密集随机比特流，它们可读，也可能被对手读。比特流的带宽和持续时间使得对手永久存储相当数量的比特在经济上是不可行的。将研究和实现用于生成和广播或传输比特流的方法，以及存储限制假设的可行性。近年来，一种实用的加密算法(超加密)在有限存储模型下的信息论永久保密性得到了很好的证明。1.系统设计：将指定基于卫星、网页和光纤的随机比特流分配系统，并咨询这些技术的专家进行分析。2.协议和应用：基于超加密的电子商务和网络安全协议的创新和发展。3.基于网页跳跃的超加密：详细开发了一个完整的超加密系统，该系统使用万维网页面上的随机游走作为实际的随机性来源，并评估其可行性。4.理论基础：改进超加密算法。采用随机性提取方法来增强基于WWW的系统的安全性。项目成果：基于超加密的可证明安全的通信和协议的可用的详细系统。超加密及其应用的完整理论基础。

The overall objective of this proposal is to study and implement provably information theoretic secure methods for encryption and derive applications to important security tasks such as message and user authentication and commitment protocols. The great interest in quantum cryptography demonstrates the need for absolutely secure encryption. The approach will use existing networks to transmit large streams of encrypted data. The proposed implementation can be widely deployed within the near future. Having a practical, provably secure against any attack, method for preserving secrecy of messages is of great importance for protection of personal privacy and commercial correspondence. In recent years a new paradigm for encryption, one that does not depend on as yet unproven computational intractability results, was proposed. The customary assumption that the would be code-breaker is computationally bounded,is replaced by an assumption that he is storage space bounded. The Sender and Receiver share a small private key and employ an unending intense stream of random bits readable by them and possibly by adversaries. The bandwidth and duration of the bit stream renders the permanent storage of a comparable number of bits by the adversary economically infeasible. Methods for generating and broadcasting or transmitting the bit stream, and the viability of the storage bound assumption, will be studied and implemented. In recent years, strong results concerning the information theoretic everlasting secrecy of a practical encryption algorithm (Hyper-Encryption) in the bounded storage model were proved.The project will comprise four interleaving lines of work. 1. System design: Satellite, web page, and fiber optics based systems for the distribution of the random bit streams will be specified and analyzed in consultation with experts in these technologies. 2. Protocols and applications: Innovation and development of Hyper-Encryption based protocols for e-commerce and network security. 3. Web page hopping based Hyper-Encryption: Detailed development of a complete Hyper-Encryption system employing random walk over pages of the World Wide Web as a pragmatic source of randomness and evaluation of its viability. 4. Theoretical foundations: Improving the Hyper-Encryption algorithm. Employing randomness extraction methods to enhance the safety of the WWW based system.Projected achievements: A usable detailed system for provably secure communications and protocols based on Hyper-Encryptions. Complete theoretical foundation for Hyper-Encryption and its applications.