RSA加解密相关问题

目前正在做RSA加解密,有JAVA的例子,但是c#里面有很多东西都没有,请问C#里面对应的是什么.
JAVA中:
JCERSAPublicKey
RsaPublicKey

X509CertificateObject obj = (X509CertificateObject) o; 
JCERSAPublicKey key = (JCERSAPublicKey)obj.getPublicKey();
RsaKeyParameters parameters = new RsaKeyParameters(false,key.getModulus(),getPublicExponent()); 


c#中对应的是什么?

我想要得到红字的那部分的参数,java是如上代码可以得到,c#如何得到.
RsaKeyParameters parameters = new RsaKeyParameters(false,key.getModulus(),getPublicExponent());  --------------------编程问答-------------------- http://zhidao.baidu.com/question/321729690.html --------------------编程问答--------------------         #region RSA 加密解密

        #region RSA 的密钥产生

        /// <summary>
        /// RSA 的密钥产生 产生私钥 和公钥 
        /// </summary>
        /// <param name="xmlKeys"></param>
        /// <param name="xmlPublicKey"></param>
        public void RSAKey(out string xmlKeys, out string xmlPublicKey)
        {
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            xmlKeys = rsa.ToXmlString(true);
            xmlPublicKey = rsa.ToXmlString(false);
        }
        #endregion

        #region RSA的加密函数
        //############################################################################## 
        //RSA 方式加密 
        //说明KEY必须是XML的行式,返回的是字符串 
        //在有一点需要说明！！该加密方式有 长度 限制的！！ 
        //##############################################################################

        //RSA的加密函数  string
        public string RSAEncrypt(string xmlPublicKey, string m_strEncryptString)
        {

            byte[] PlainTextBArray;
            byte[] CypherTextBArray;
            string Result;
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(xmlPublicKey);
            PlainTextBArray = (new UnicodeEncoding()).GetBytes(m_strEncryptString);
            CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);
            Result = Convert.ToBase64String(CypherTextBArray);
            return Result;

        }
        //RSA的加密函数 byte[]
        public string RSAEncrypt(string xmlPublicKey, byte[] EncryptString)
        {

            byte[] CypherTextBArray;
            string Result;
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(xmlPublicKey);
            CypherTextBArray = rsa.Encrypt(EncryptString, false);
            Result = Convert.ToBase64String(CypherTextBArray);
            return Result;

        }
        #endregion

        #region RSA的解密函数
        //RSA的解密函数  string
        public string RSADecrypt(string xmlPrivateKey, string m_strDecryptString)
        {
            byte[] PlainTextBArray;
            byte[] DypherTextBArray;
            string Result;
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(xmlPrivateKey);
            PlainTextBArray = Convert.FromBase64String(m_strDecryptString);
            DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);
            Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
            return Result;

        }

        //RSA的解密函数  byte
        public string RSADecrypt(string xmlPrivateKey, byte[] DecryptString)
        {
            byte[] DypherTextBArray;
            string Result;
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(xmlPrivateKey);
            DypherTextBArray = rsa.Decrypt(DecryptString, false);
            Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
            return Result;

        }
        #endregion

        #endregion

补充：.NET技术 ,  ASP.NET