DNA computing theories can be applied in cryptography and it is a very hopeful direction. Though still in primitive level, it applies in many fields and solved some hard problems successfully. The art of cryptography security is to make anybody can not read it by encoding message. This paper use a new way to show how cryptography works with DNA computing, it can transmit message securely and effectively. The RSA algorithm belongs to asymmetric key cryptography, it is used in this paper connecting with DNA computing technique to encrypt message.

An issue connected to cryptography in the United States is the influence of the National Security Agency on cipher development and policy. The NSA was involved with the design of DES during its development at IBM and its consideration by the National Bureau of Standards as a possible Federal Standard for cryptography.[51] DES was designed to be resistant to differential cryptanalysis,[52] a powerful and general cryptanalytic technique known to the NSA and IBM, that became publicly known only when it was rediscovered in the late 1980s.[53] According to Steven Levy, IBM discovered differential cryptanalysis,[54] but kept the technique secret at the NSA's request. The technique became publicly known only when Biham and Shamir re-discovered and announced it some years later. The entire affair illustrates the difficulty of determining what resources and knowledge an attacker might actually have.



CIA and cryptography: https://www.cia.gov/news-information/featured-story-archive/2007-featured-story-archive/cracking-the-code.html



DGSE: http://www.defense.gouv.fr/dgse/tout-le-site/nos-besoins-en-recrutement



BND: http://www.bnd.bund.de/DE/_Home/Startseite/Wissenswertes/Kryptogeschichte.html



NDB: http://www.schweizamsonntag.ch/ressort/aktuell/3210/



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