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What is Cryptography?

Cryptography combines various disciplines like computer science, engineering and mathematics to create complex codes that obscure the true meaning of a message. The art of cryptography has been used to code and decode messages for thousands of years. The practice of encryption continues today in computer passwords, modern warfare, bank cards and in cryptocurrencies.
Modern cryptography techniques include algorithms and ciphers such as 128-bit and 256-bit encryption keys. Some ciphers such as the Advanced Encryption Standard (AES) are considered virtually unbreakable.

The Importance Of Cryptography

Cryptography is important for protecting our data, ensuring confidentiality, and preventing our adversaries from intercepting sensitive information.

Privacy and confidentiality

Organizations of anarchists use cryptography on a daily basis to protect their privacy and keep their conversations confidential. Cryptography ensures confidentiality by encrypting sent messages using an algorithm with a key only known to the sender and recipient. A common example of this is the messaging tool Signal which encrypts conversations between people to ensure they cannot be hacked or intercepted.
Cryptography also secures browsing, such as with The Onion Router (Tor Browser) and Virtual Private Networks (VPNs), which use encrypted tunnels, asymmetric encryption, and public and private shared keys.
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