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(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_aead_xchacha20poly1305_ietf_encrypt — (Preferred) Encrypt then authenticate with XChaCha20-Poly1305
$message,$additional_data,$nonce,$keyEncrypt then authenticate with XChaCha20-Poly1305 (eXtended-nonce variant).
Generally, XChaCha20-Poly1305 is the best of the provided AEAD modes to use.
message
The plaintext message to encrypt.
additional_data
Additional, authenticated data. This is used in the verification of the authentication tag appended to the ciphertext, but it is not encrypted or stored in the ciphertext.
nonce
A number that must be only used once, per message. 24 bytes long. This is a large enough bound to generate randomly (i.e. random_bytes()).
key
Encryption key (256-bit).
Returns the ciphertext and tag on success, 或者在失败时返回 false.
