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Keeping text messages secure from hackers and eavesdroppers is increasingly important. While governments claim they occasionally need access to investigate crimes and terrorism, tech companies view this as a privacy violation. Text messages are protected through end-to-end encryption, which secures messages in transit. Each smartphone has a unique pair of public and private keys: the public key is shared and used in the encryption process, while the private key remains confidential on the device. To chat securely, two users combine their public and private keys to generate a temporary shared key for encryption.