Cryptography Origin and Evolution
Cryptography's roots trace back to ancient civilizations like Egypt and Rome. Initially, it was simple substitution ciphers. Today, it secures digital communications with complex algorithms and public-key systems.
Enigma: World War Cipher
During World War II, the Enigma machine encrypted Axis communications. Alan Turing's work at Bletchley Park to break Enigma codes was pivotal, significantly shortening the war and advancing computing.
Quantum Cryptography Emergence
Quantum cryptography uses quantum mechanics principles, ensuring theoretically unbreakable encryption. It exploits quantum key distribution, making eavesdropping detection inherent and immediate due to the nature of quantum states.
Public-Key Cryptography Breakthrough
Public-key cryptography revolutionized security by using two keys: a public one for encryption and a private one for decryption. It enabled secure, anonymous communications over unsecured channels.
Cryptographic Hash Functions
Hash functions convert data into a fixed-size hash, crucial for data integrity verification. Unique to each input, a tiny change produces a vastly different hash, used in blockchain and password storage.
Cryptojacking: Hidden Threat
Cryptojacking secretly uses victims' computing resources to mine cryptocurrency. It's a silent, profitable cybercrime. Unlike traditional attacks, it focuses on processing power theft rather than data.
Blockchain: Distributed Ledgers
Blockchain technology uses cryptography to create a tamper-evident, decentralized ledger system. It underpins cryptocurrencies like Bitcoin, ensuring security and trust without a central authority.
What did ancient cryptography primarily use?
Quantum principles
Substitution ciphers
Public-key systems
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