Cryptography

Cryptography is the practice of secure communication in the presence of third parties. It involves techniques for secure communication in the presence of adversaries, including confidentiality, integrity, authentication, and non-repudiation. Cryptography is used to protect sensitive information, such as financial transactions, personal data, and military communications. Cryptography involves the use of mathematical algorithms to transform plaintext into ciphertext, which can only be read by someone who has the key to decrypt it. Cryptography also involves the use of digital signatures, which provide a way to verify the authenticity of a message and the identity of the sender. Cryptography is an important field in data science and artificial intelligence, as it is used to protect data in various applications, including e-commerce, online banking, and secure messaging.
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