素数的判定，miller-rabin，sol-str,leman,fermat等。都可以运行，下完自后自己稍微改改就可以用。-Primes judgment, miller-rabin, sol-str, leman, fermat so on. Can run is finished after their own little changed since it can be used.

可以生成基于ras的公钥及私钥证书，加密tostr的方法及服务端解密的 strto 方法。先生成证书 利用公钥进行加密并转换str传送使用 服务端使用私钥对str进行解密使用-Can generate Ras based public key and private key certificate, the method of encryption tostr and server decryption strto method. Mr. Cheng certificate using th