我要评论产生私钥和公钥
system.security.cryptography.rsacryptoserviceprovider myrsa = new rsacryptoserviceprovider();
//得到私钥主要保存了rsaparameters中的8各参数
privatekey = myrsa.toxmlstring(true);
//得到公钥保存了rsaparameters中2个参数
publickey = myrsa.toxmlstring(false);
ras实现加密
system.security.cryptography.rsacryptoserviceprovider myrsa = new rsacryptoserviceprovider();
//得到公钥
myrsa.fromxmlstring(publickey);
//把你要加密的内容转换成byte[]
byte[] plaintextbarray = (new unicodeencoding()).getbytes("这里是你要加密的内容");
//使用.net中的encrypt方法加密
byte[] cyphertextbarray = myrsa.encrypt(plaintextbarray, false);
//最后吧加密后的byte[]转换成base64string，这里就是加密后的内容了
result = convert.tobase64string(cyphertextbarray)
ras实现解密
system.security.cryptography.rsacryptoserviceprovider myrsa = new rsacryptoserviceprovider();
//得到私钥
myrsa.fromxmlstring(xmlprivatekey);
//把原来加密后的string转换成byte[]
byte[] plaintextbarray = convert.frombase64string("刚才加密后的string");
//使用.net中的decrypt方法解密
byte[] dyphertextbarray = myrsa.decrypt(plaintextbarray, false);
//转换解密后的byte[]，这就得到了我们原来的加密前的内容了
result = (new unicodeencoding()).getstring(dyphertextbarray);
byte[] messagebytes = encoding.utf8.getbytes("luo罗");
rsacryptoserviceprovider orsa = new rsacryptoserviceprovider();
string privatekey = orsa.toxmlstring(true);
string publickey = orsa.toxmlstring(false);
//私钥签名
rsacryptoserviceprovider orsa3 = new rsacryptoserviceprovider();
orsa3.fromxmlstring(privatekey);
byte[] aoutput = orsa3.signdata(messagebytes, "sha1");
//公钥验证
rsacryptoserviceprovider orsa4 = new rsacryptoserviceprovider();
orsa4.fromxmlstring(publickey);
bool bverify = orsa4.verifydata(messagebytes, "sha1", aoutput);
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