Like Bitcoin and Litecoin, RUcoin functions using public-key cryptography, in which a user generates
a pair of cryptographic keys: one public and one private. Only the private key can decode information
encrypted with the public key; therefore the keys' owner can distribute the public key openly without
fear that anyone will be able to use it to gain access to the encrypted information. All RUcoin
addresses are public key hashes. A public key is the RUcoin address to which other users can send RU
coins. A private key, however, allows full access to the RUcoin wallet; it must be kept secret and secure.