ratcheting in cryptography

Ratcheting in cryptography refers to a technique where encryption keys are continuously updated and changed during secure communication, typically for secure messaging applications. This process increases the security of the communication by ensuring that if one encryption key is ever compromised, the exposure is limited to a relatively small portion of the overall conversation. The technique involves periodically discarding older encryption keys and replacing them with new ones to provide forward secrecy and prevent future decryption of the messages.

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