Cryptography And Network Security Atul Kahate Ppt File

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Cryptography is the practice and study of techniques for secure communication by transforming plaintext (readable data) into ciphertext (unreadable data) to protect it from unauthorized access. It involves the use of algorithms and protocols to ensure the confidentiality, integrity, and authenticity of data. Cryptography is used to protect data in transit (e.g., online transactions, email communication) and at rest (e.g., stored data on a device or server). Here is a suggested outline for an PPT

There are two main types of cryptography: symmetric key cryptography and asymmetric key cryptography. Symmetric key cryptography uses the same secret key for both encryption and decryption, whereas asymmetric key cryptography uses a pair of keys: a public key for encryption and a private key for decryption. Hash functions are another type of cryptography that is used to ensure data integrity. It involves the use of algorithms and protocols