sodium_crypto_aead_chacha20poly1305_decrypt

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_aead_chacha20poly1305_decrypt — Verify then decrypt with ChaCha20-Poly1305

    说明

    sodium_crypto_aead_chacha20poly1305_decrypt(
        string $ciphertext,
        string $additional_data,
        string $nonce,
        #[\SensitiveParameter] string $key
    ): string|false

    Verify then decrypt with ChaCha20-Poly1305.

    参数

    ciphertext

    Must be in the format provided by sodium_crypto_aead_chacha20poly1305_encrypt() (ciphertext and tag, concatenated).

    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. 8 bytes long.

    key

    Encryption key (256-bit).

    返回值

    Returns the plaintext on success, 或者在失败时返回 false.

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