sodium_crypto_aead_aes256gcm_encrypt
PHP 7 >= 7.2.0, PHP 8
sodium_crypto_aead_aes256gcm_encrypt - Encrypt then authenticate with AES-256-GCM
Manual
sodium_crypto_aead_aes256gcm_encrypt(
string$message,
string$additional_data,
string$nonce,
string$key
): string
string$message,
string$additional_data,
string$nonce,
string$key
): string
Encrypt then authenticate with AES-256-GCM. Only available if sodium_crypto_aead_aes256gcm_is_available returns true.
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. 12 bytes long.
- key
-
Encryption key (256-bit).
Return Values
Returns the ciphertext and authentication tag as a string of raw binary bytes. (Format: ciphertext, then tag.)