sodium_crypto_box_open

Authenticated public-key decryption

Description

stringfalse sodium_crypto_box_open(string $ciphertext, string $nonce, #[\SensitiveParameter]string $key_pair)

Decrypt a message using asymmetric (public key) cryptography.

Parameters

ciphertext

The encrypted message to attempt to decrypt.

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 sodium_crypto_box_keypair_from_secretkey_and_publickey. This should include the sender's public key and the recipient's secret key.

Return Values

Returns the plaintext message on success, or false on failure.