openssl_seal
Seal (encrypt) data
&reftitle.description;
intfalseopenssl_seal
stringdata
stringsealed_data
arrayencrypted_keys
arraypublic_key
stringcipher_algo
stringiv&null;
openssl_seal seals (encrypts)
data by using the given cipher_algo with a randomly generated
secret key. The key is encrypted with each of the public keys
associated with the identifiers in public_key
and each encrypted key is returned
in encrypted_keys. This means that one can send
sealed data to multiple recipients (provided one has obtained their
public keys). Each recipient must receive both the sealed data and
the envelope key that was encrypted with the recipient's public key.
&reftitle.parameters;
data
The data to seal.
sealed_data
The sealed data.
encrypted_keys
Array of encrypted keys.
public_key
Array of OpenSSLAsymmetricKey instances containing public keys.
cipher_algo
The cipher method.
The default value ('RC4') is considered insecure.
It is strongly recommended to explicitly specify a secure cipher method.
iv
The initialization vector.
&reftitle.returnvalues;
Returns the length of the sealed data on success, or &false; on error.
If successful the sealed data is returned in
sealed_data, and the envelope keys in
encrypted_keys.
&reftitle.changelog;
&Version;
&Description;
8.0.0
public_key accepts an &array; of
OpenSSLAsymmetricKey instances now;
previously, an &array; of &resource;s of type OpenSSL key
was accepted.
8.0.0
cipher_algo is no longer an optional parameter.
8.0.0
iv is nullable now.
&reftitle.examples;
<function>openssl_seal</function> example
]]>
&reftitle.seealso;
openssl_open