rsa_decrypt is available since version 1.0.
Prototype:
string rsa_decrypt(string data, string rsa_private_key)
Parameters
data
the encrypted data to decrypt
rsa_private_key
the private key to use
Description:
Decrypts using the RSA algorithm. For generating key pairs, you may want to use
rsa_generate_keys.
Return value:
Returns the decrypted data (if succeeded) or an empty string if the key was invalid.