sodium_crypto_box
sodium_crypto_box
Authenticated public-key encryption
string **sodium_crypto_box** string $message string $nonce string $key_pair
Encrypt a message using asymmetric (public key) cryptography.
The algorithm used by functions prefixed with are
Elliptic Curve Diffie-Hellman over the Montgomery curve, Curve25519; usually abbreviated as
X25519.
sodium_crypto_box
messageThe message to be encrypted.
nonce
A number that must be only used once, per message. 24 bytes long.
This is a large enough bound to generate randomly (i.e. ).
random_bytes
key_pair
See .
This should include the sender's X25519 secret key and the recipient's X25519 public key.
sodium_crypto_box_keypair_from_secretkey_and_publickey
Returns the encrypted message (ciphertext plus authentication tag). The ciphertext will be
16 bytes longer than the plaintext, and a raw binary string. See
for safe encoding for storage.
sodium_bin2base64