Cryptography is based upon creating numerous amounts of ways to encrypt. It has been around for many years, it is a crucial way to hide/encrypt a given text/document so that only the intented person can reach and read it.
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Historical Overview
Cryptography dates back to the earliest civilizations in Egypt and Rome, which explored only substitution ciphers of the likes of Caesar ciphers to secure military communications. However, the real impetus to the subject came during World War II, with the invention of the Enigma machine — a sophisticated encryption device that Hitler's Germans had been using, famously broken by Alan Turing and his team at Bletchley Park.
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Modern Cryptography
Most cryptographic tools are categorized into two main types: symmetric-key cryptography and asymmetry-key cryptography. A good example of symmetric-key cryptographic tools is the Advanced Encryption Standard (AES); in this tool, both the decryption and encryption process involve using the same key. The field of asymmetric-key cryptography was fundamentally shaped by the work of Diffie and Hellman in 1976, which is based on public-key establishments, such as the RSA.
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Applications and Impact
It is cryptography that enables secure communication on the Internet, from simple emails to e-commerce trading. Essential technologies like SSL/TLS for safe browsing, digital signatures for authenticity, and cryptocurrencies like Bitcoin wouldn't be possible without it. As the world delves further into the digital era, the importance of cryptography continues to rise to ensure the necessary privacy and security of a steadily increasing number of linkage linkages.
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