sodium_crypto_aead_aes256gcm_encrypt

sodium_crypto_aead_aes256gcm_encrypt

Encrypt then authenticate with AES-256-GCM

string **sodium_crypto_aead_aes256gcm_encrypt** string $message string $additional_data string $nonce string $key

Encrypt then authenticate with AES-256-GCM. Only available if returns true. sodium_crypto_aead_aes256gcm_is_available

messageThe plaintext message to encrypt.

additional_dataAdditional, 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.

nonceA number that must be only used once, per message. 12 bytes long.

keyEncryption key (256-bit).

Returns the ciphertext and authentication tag as a string of raw binary bytes. (Format: ciphertext, then tag.)