实现RSA算法的移植，能够在单片机上实现简单的加解密功能-Implementation of RSA algorithm transplantation, can achieve the function of simple encryption on the single chip microcompute

返回SHA1PRNG算法的SecureRandom对象 secureRandom = SecureRandom.getInstance("SHA1PRNG"); //返回RSA密钥对的KeyPairGenerator对象 KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RS(I am working in a factory.