sodium_crypto_aead_chacha20poly1305_decrypt

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_aead_chacha20poly1305_decryptVerify then decrypt with ChaCha20-Poly1305

Beschreibung

sodium_crypto_aead_chacha20poly1305_decrypt ( string $ciphertext , string $additional_data , string $nonce , string $key ) : string|false

Verify then decrypt with ChaCha20-Poly1305.

Parameter-Liste

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).

R├╝ckgabewerte

Returns the plaintext on success, Im Fehlerfall wird false zur├╝ckgegeben..

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