嗯，确实有足够的示例，但是无论如何，在这里
using System;using System.Security.Cryptography;namespace RsaCryptoExample{ static class Program { static void Main() { //lets take a new CSP with a new 2048 bit rsa key pair var csp = new RSACryptoServiceProvider(2048); //how to get the private key var privKey = csp.ExportParameters(true); //and the public key ... var pubKey = csp.ExportParameters(false); //converting the public key into a string representation string pubKeyString; { //we need some buffer var sw = new System.IO.StringWriter(); //we need a serializer var xs = new System.Xml.Serialization.XmlSerializer(typeof(RSAParameters)); //serialize the key into the stream xs.Serialize(sw, pubKey); //get the string from the stream pubKeyString = sw.ToString(); } //converting it back { //get a stream from the string var sr = new System.IO.StringReader(pubKeyString); //we need a deserializer var xs = new System.Xml.Serialization.XmlSerializer(typeof(RSAParameters)); //get the object back from the stream pubKey = (RSAParameters)xs.Deserialize(sr); } //conversion for the private key is no black magic either ... omitted //we have a public key ... let's get a new csp and load that key csp = new RSACryptoServiceProvider(); csp.importParameters(pubKey); //we need some data to encrypt var plainTextData = "foobar"; //for encryption, always handle bytes... var bytesPlainTextData = System.Text.Encoding.Unipre.GetBytes(plainTextData); //apply pkcs#1.5 padding and encrypt our data var bytesCypherText = csp.Encrypt(bytesPlainTextData, false); //we might want a string representation of our cypher text... base64 will do var cypherText = Convert.Tobase64String(bytesCypherText); //first, get our bytes back from the base64 string ... bytesCypherText = Convert.Frombase64String(cypherText); //we want to decrypt, therefore we need a csp and load our private key csp = new RSACryptoServiceProvider(); csp.importParameters(privKey); //decrypt and strip pkcs#1.5 padding bytesPlainTextData = csp.Decrypt(bytesCypherText, false); //get our original plainText back... plainTextData = System.Text.Encoding.Unipre.GetString(bytesPlainTextData); } }}附带说明：对Encrypt（）和Decrypt（）的调用具有一个布尔参数，该参数在OAEP和PKCS＃1.5填充之间切换…如果您遇到的情况可用，则可能要选择OAEP
