sodium_crypto_aead_chacha20poly1305_encrypt

(PHP 7 >= 7.2.0, PHP 8)

sodium_crypto_aead_chacha20poly1305_encryptEncrypt then authenticate with ChaCha20-Poly1305

Description

sodium_crypto_aead_chacha20poly1305_encrypt(
    string $message,
    string $additional_data,
    string $nonce,
    string $key
): string

Encrypt then authenticate with ChaCha20-Poly1305.

Parameters

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. 8 bytes long.

key

Encryption key (256-bit).

Return Values

Returns the ciphertext and tag on success, or false on failure.