Cryptography

Cryptography is the study of techniques for secure communication in the presence of third parties, known as adversaries. It involves the use of mathematical algorithms and protocols to secure the confidentiality, integrity, and authenticity of data.

Cryptography is an essential tool for protecting information and communications in the modern world, and is used in a wide range of applications, including:

Confidentiality: Cryptography can be used to protect the confidentiality of data by encrypting it in such a way that it can only be accessed by someone with the appropriate decryption key or algorithm.

Integrity: Cryptography can be used to ensure the integrity of data by using techniques such as message authentication codes and digital signatures, which allow recipients to verify that the data has not been tampered with during transmission.

Authenticity: Cryptography can be used to verify the authenticity of a message or communication, by using techniques such as digital signatures, which allow recipients to verify that the message was actually sent by the claimed sender.

Overall, cryptography is an essential tool for protecting information and communications in the modern world, and is used in a wide range of applications to ensure the confidentiality, integrity, and authenticity of data.


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