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How does PHPSHA256 contain key encryption and decryption?

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Which of the following powerful gods has PHPSHA256 code with key encryption and decryption? Please give me a copy. Thank you. If hash_hmac is used, encryption can only be implemented but cannot be decrypted because it is irreversible. Which of the following is the PHP SHA256 code with key encryption and decryption? Please give me a copy. Thank you.

If hash_hmac is used, encryption can only be implemented but cannot be decrypted because it is irreversible.

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Which of the following is the PHP SHA256 code with key encryption and decryption? Please give me a copy. Thank you.

If hash_hmac is used, encryption can only be implemented but cannot be decrypted because it is irreversible.

SHA256It is a hash algorithm. How can it be decrypted? Only collision allowed

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