sodium_crypto_box_seal_open

Anonymous public-key decryption

&reftitle.description; ``string``false```sodium_crypto_box_seal_open` `string` `ciphertext` #[\SensitiveParameter]`string` `key_pair`

Decrypt a message that was encrypted with `sodium_crypto_box_seal`

&reftitle.parameters;

`ciphertext`

- The encrypted message

`key_pair`

- The keypair of the recipient. Must include the secret key.

&reftitle.returnvalues;

The plaintext on success, &return.falseforfailure;.

&reftitle.examples;

### `sodium_crypto_box_seal_open` example

    <?php
    // Ciphertext is not sensitive; base64_decode is fine
    $sealed_b64 = "oRBXXAV4iQBrxlV4A21Bord8Yo/D8ZlrIIGNyaRCcGBfpz0map52I3xq6l+CST+1NSgQkbV+HiYyFjXWiWiaCGupGf+zl4bgWj/A9Adtem7Jt3h3emrMsLw=";
    $sealed = base64_decode($sealed_b64);

    // Keypair contains a cryptographic secret; use a timing-safe decoder
    $keypair_b64 = "KZkF8wnB7bnC2aXB3lFOqCTc0Z6MllvaQb9ASVG8o2/MsewkuE4u1uaEgTzSakeiYyIW8DGj+02/L3cWIbs9bQ==";
    $keypair = sodium_base642bin($keypair_b64, SODIUM_BASE64_VARIANT_ORIGINAL);

    $opened = sodium_crypto_box_seal_open($sealed, $keypair);
    var_dump($opened);
    ?>

&example.outputs.similar;

    string(41) "Writing software in PHP can be a delight!"