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Cryptography is the practice of protecting information by transforming it into an unreadable format to prevent unauthorized access. It relies on mathematical principles, such as number theory and algebra, to create secure encryption systems. The text explores the evolution of cryptography, its applications in modern technology, and the challenges it faces, including the threat of quantum computing. It also distinguishes between symmetric and asymmetric cryptography, highlighting their roles in digital security.
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Encryption is the process of converting information into an unreadable format to protect it from unauthorized access
Decryption is the process of converting encrypted information back to its original form
Cryptographic keys are secret parameters that allow only intended recipients to decrypt and access information
Number theory is a branch of mathematics that provides the theoretical basis for secure encryption systems
Algebra is used in the design of cryptographic algorithms
Computational complexity is integral to the creation of secure cryptographic systems
Cryptography is essential for securing digital communications and protecting data integrity on the internet
Cryptography is integral to the security of mobile devices and financial transactions
Cryptography is used to secure wireless network communications
Symmetric cryptography uses the same key for both encryption and decryption
Asymmetric cryptography uses a public key for encryption and a private key for decryption
Hybrid cryptography combines the speed of symmetric encryption with the secure key distribution of asymmetric encryption
Cryptographic strength relies on computational problems that are difficult to solve without a key
Post-quantum cryptography is being developed to protect against emerging threats from quantum computing
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Definition of Encryption
Encryption is the process of converting plaintext into ciphertext to secure information from unauthorized access.
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Role of Cryptographic Keys
Cryptographic keys are secret parameters that enable encryption and decryption, ensuring only intended recipients access data.
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Evolution of Cryptography
Cryptography has progressed from simple ancient ciphers to complex algorithms designed to protect against modern cyber threats.
