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Cryptography - Wikipedia Before the modern era, cryptography focused on message confidentiality (i e , encryption)—conversion of messages from a comprehensible form into an incomprehensible one and back again at the other end, rendering it unreadable by interceptors or eavesdroppers without secret knowledge (namely the key needed for decryption of that message) Encryption attempted to ensure secrecy in
Encryption software - Wikipedia Encryption software is software that uses cryptography to prevent unauthorized access to digital information [1][2] Cryptography is used to protect digital information on computers as well as the digital information that is sent to other computers over the Internet
History of cryptography - Wikipedia History of cryptography Cryptography, the use of codes and ciphers, began thousands of years ago [1] Until recent decades, it has been the story of what might be called classical cryptography — that is, of methods of encryption that use pen and paper, or perhaps simple mechanical aids
Encryption - Wikipedia Encryption A simple illustration of public-key cryptography, one of the most widely used forms of encryption In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can decode
Kerckhoffss principle - Wikipedia Auguste Kerckhoffs Kerckhoffs's principle (also called Kerckhoffs's desideratum, assumption, axiom, doctrine or law) of cryptography was stated by the Dutch cryptographer Auguste Kerckhoffs in the 19th century The principle holds that a cryptosystem should be secure, even if everything about the system, except the key, is public knowledge This concept is widely embraced by cryptographers, in
One-time pad - Wikipedia A common flawed delivery mechanism for one-time-pad is a standard hybrid cryptosystem that relies on symmetric key cryptography for pad encryption, and asymmetric cryptography for symmetric key delivery Common secure methods for one-time pad delivery are quantum key distribution, a sneakernet or courier service, or a dead drop
Cryptanalysis - Wikipedia Cryptanalysis has coevolved together with cryptography, and the contest can be traced through the history of cryptography —new ciphers being designed to replace old broken designs, and new cryptanalytic techniques invented to crack the improved schemes
Strong cryptography - Wikipedia Strong cryptography or cryptographically strong are general terms used to designate the cryptographic algorithms that, when used correctly, provide a very high (usually insurmountable) level of protection against any eavesdropper, including the government agencies [1]
Chaotic cryptology - Wikipedia Chaotic cryptology is the application of mathematical chaos theory to the practice of cryptography, the study or techniques used to privately and securely transmit information with the presence of a third-party or adversary Since first being investigated by Robert Matthews in 1989, [1] the use of chaos in cryptography has attracted much interest
Cryptography standards - Wikipedia Cryptography standards There are a number of standards related to cryptography Standard algorithms and protocols provide a focus for study; standards for popular applications attract a large amount of cryptanalysis