On a whole disk encrypted a disk with two partitions, the second partition is inaccessible after formatting the primary partition without decrypting the disk. Restore Symantec Encryption Management Server (PGP Universal Server) from a Backup | KS010S 賽門鐵克技術資源網 在 Install Universal Server 3.1.2.9.Today, cryptography is a cornerstone of the modern security technologies used to protect information and resources on both open and closed networks. It has been used historically as a means of providing secure communication between individuals, government agencies, and military forces. Cryptography is the science of providing security for information. The paper highlights the use of cryptography by various banks. Cryptography is a way to have secure transactions, encrypt/encode data so that only the users involved in the transactions can read it. The privacy techniques can be achieved using cryptography. Security has become a necessity and in order to achieve it multiple techniques are available. This paper introduces Cryptography “The science of protecting data” and Network Security “keeping information private and Secure from unauthorized Users”. In this paper, we discuss the classification of network security techniques such as (PAIN) Privacy, Authenticity, Integrity and Non-repudiation of data. Many terrorist attacks are happening all over the world-using internet as a medium to connect, communicate & execute the thing. The internet has become the medium for spreading fear and laundering money. Spam, viruses, denial of service attack, intellectual property theft, and transactional fraud are already at all time highs. We live in an age of terror and growing fear. The proposed algorithms in this thesis are high-potential for adoption in e-commerce applications and protocols. Several analyses and computer simulations are performed on the proposed algorithms to verify their characteristics, confirming that these proposed algorithms satisfy the characteristics and conditions of security algorithms. The comparison results show that the proposed algorithms are better than some other existing algorithms. We have compared the proposed chaos-based hash functions, block cipher and pseudorandom number generator with well-know algorithms. In additi on, a new one-dimensional triangle-chaotic map (TCM) with perfect chaotic behaviour is presented. The securities of the proposed algorithms are analyzed based on some well-know statistical tests in this filed. Novel hash functions, encryption algorithms and pseudorandom number generators based on chaotic systems for electronic commerce are proposed. In this thesis, we comprehensively explore the analysis and design of security primitives based on chaotic systems for electronic commerce: hash functions, encryption algorithms and pseudorandom number generators. In view of this, designing new secure and fast security algorithms based on chaotic systems which guarantee integrity, authentication and confidentiality is essential for electronic commerce development. Several security algorithms based on chaotic systems have been proposed unfortunately some of them were found to be insecure and/or slow. Chaotic systems and security algorithms have similar properties including sensitivity to any change or changes in the initial parameters, unpredictability, deterministic nature and random-like behaviour. Security is considered the most important requirement for the success of electronic commerce, which is built based on the security of hash functions, encryption algorithms and pseudorandom number generators.
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