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Keeping text messages secure from hackers and eavesdroppers is critical, though governments sometimes seek access for criminal investigations. Tech companies view this as a privacy infringement. Text messages are secured via end-to-end encryption, which protects data during transit. Each smartphone generates a public and private key: the public key, shared with others, is part of the encryption process, while the private key remains on the device and is never shared. For secure communication, two parties combine their public and private keys to create a temporary shared key.