(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_secretstream_xchacha20poly1305_keygen — Generate a random secretstream key.
sodium_crypto_secretstream_xchacha20poly1305_keygen(): string
Generate a random secretstream key.
This function has no parameters.
Returns a string of random bytes.
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https://www.php.net/manual/en/function.sodium-crypto-secretstream-xchacha20poly1305-keygen.php