sodium_crypto_aead_xchacha20poly1305_ietf_encrypt

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_aead_xchacha20poly1305_ietf_encrypt — (Preferred) Encrypt then authenticate with XChaCha20-Poly1305

    说明

    sodium_crypto_aead_xchacha20poly1305_ietf_encrypt(
        #[\SensitiveParameter] string $message,
        string $additional_data,
        string $nonce,
        #[\SensitiveParameter] string $key
    ): string

    Encrypt then authenticate with XChaCha20-Poly1305 (eXtended-nonce variant).

    Generally, XChaCha20-Poly1305 is the best of the provided AEAD modes to use.

    参数

    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).

    返回值

    Returns the ciphertext and tag on success, 或者在失败时返回 false.

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