Quantum Cryptography
CTR, or Counter mode, is a method used in symmetric-key cryptography for encrypting data by turning a block cipher into a stream cipher. It does this by combining the plaintext with a nonce and a counter value, which changes with each block of data, making it highly secure and efficient for parallel processing. The use of a unique nonce for each encryption prevents replay attacks and ensures that the same plaintext encrypts differently each time.
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