openssl_private_decrypt()
decrypts data that was
previous encrypted via
openssl_private_encrypt() and stores the result into
decrypted. key must be the private key
corresponding that was used to encrypt the data. padding defaults to
OPENSSL_PKCS1_PADDING, but can also be one of
OPENSSL_SSLV23_PADDING, OPENSSL_PKCS1_OAEP_PADDING
OPENSSL_NO_PADDING.