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Max Planck Encyclopedia of Public International Law [MPEPIL]

Coded Communications (Encryption)

Johann-Christoph Woltag

From: Oxford Public International Law (http://opil.ouplaw.com). (c) Oxford University Press, 2015. All Rights Reserved.date: 27 January 2020

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Published under the auspices of the Max Planck Foundation for International Peace and the Rule of Law under the direction of Rüdiger Wolfrum.

1 Coded communications is the umbrella term for the exchange of information that has been encoded or enciphered in a manner to theoretically render it impossible to read by anyone except the designated addressee holding a decryption key. Its major use is the authentication of the identity of the sender and the integrity and confidentiality of the data sent. Encryption, as part of coded communications, is the process of transforming information, be it text or any other data, so-called plaintext, into a ‘ciphertext’ that is unintelligible to anyone, by using an...
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