RSACrypto ServiceProvider 단일 클래스 (.NET) 를 생성하는 데 사용되는 완전한 클래스

 1 internal class CcbRsaCryptProvider  2 {  3         private static RSACryptoServiceProvider _providerForSign;  4         private static RSACryptoServiceProvider _providerForVerifySign;  5         private static readonly object SignObj = new object();  6         private static readonly object VerifySignObj = new object();  7 
 8         internal static RSACryptoServiceProvider GetInstanceForSign(string privateKeyFile)  9  { 10             if (null != _providerForSign) return _providerForSign; 11             lock (SignObj) 12  { 13                 if (null != _providerForSign) return _providerForSign; 14                 var provider = new RSACryptoServiceProvider(); 15  provider.FromXmlString(GetXmlContent(privateKeyFile)); 16                 _providerForSign = provider; 17  } 18             return _providerForSign; 19  } 20 
21         internal static RSACryptoServiceProvider GetInstanceForVerifySign(string publicKeyFile) 22  { 23             if (null != _providerForVerifySign) return _providerForVerifySign; 24             lock (VerifySignObj) 25  { 26                 if (null != _providerForVerifySign) return _providerForVerifySign; 27                 var provider = new RSACryptoServiceProvider(); 28  provider.FromXmlString(GetXmlContent(publicKeyFile)); 29                 _providerForVerifySign = provider; 30  } 31             return _providerForVerifySign; 32  } 33 
34         private static string GetXmlContent(string filePath) 35  { 36             return File.ReadAllText(filePath); 37  } 38 
39         private CcbRsaCryptProvider() 40  { 41  } 42     }