本文主要介绍了jquery+c#实现参数rsa加密传输功能,结合具体实例形式分析了js使用jsencrypt.js插件前端字符数据处理传输及c#后台数据转换与rsa加密相关操作技巧,并附带jsencrypt.js供读者下载参考使用,需要的朋友可以参考下，希望能帮助到大家。
本文实例讲述了jquery+c#实现参数rsa加密传输功能。分享给大家供大家参考，具体如下：
注意：
参数传递的+号处理，在传输时会把+变成空格，不处理后端就报错了。
1、前端代码
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>login</title>
<script src="jquery-1.10.2.min.js"></script>
<script src="jsencrypt.min.js"></script>
<script type="text/javascript">
$(function () {
var encrypt = new jsencrypt();
encrypt.setpublickey($("#tra").val());
var data = encrypt.encrypt("123456789");
alert(data);
$("#btn").click(function () {
$.ajax({
url: '@url.action("login")',
data: "pwd=" + encodeuri(data).replace(/\+/g, '%2b'), //+号的处理：因为数据在网络上传输时，非字母数字字符都将被替换成百分号（%）后跟两位十六进制数，而base64编码在传输到后端的时候，+会变成空格，因此先替换掉。后端再替换回来
type: 'post',
success: function (msg) {
alert(msg);
}
});
});
});
</script>
</head>
<body>
<p>
<input type="button" id="btn" value="点我" />
<textarea id="tra" rows="15" cols="65">
migfma0gcsqgsib3dqebaquaa4gnadcbiqkbgqca4khnwdx44ggmmiatru4gjvyt
gwzzcm4t+1wjud4dn7fmlpvuk7ai4urfdeeje1rpwudjw+lj6crql8wsig7/dbtl
g3ihsct6dt9h5b9ooer7k9vwuesaw/iyvl6hxiyoanabw14pvjatdmdq91tfgp6p
sqyvdfirdv4r07crpqidaqab
</textarea>
<hr/>
注意+号的处理
</p>
</body>
</html>
2、后端代码
public class indexcontroller : controller
{
public actionresult login()
{
return view();
}
[httppost]
public actionresult login(string pwd)
{
//密钥格式要生成pkcs#1格式的 而不是pkcs#8格式的
string privatekey = @"miicwwibaakbgqca4khnwdx44ggmmiatru4gjvytgwzzcm4t+1wjud4dn7fmlpvuk7ai4urfdeeje1rpwudjw+lj6crql8wsig7/dbtlg3ihsct6dt9h5b9ooer7k9vw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";
try
{
rsacryptoserviceprovider rsacryptoserviceprovider = creatersaproviderfromprivatekey(privatekey);
//把+号，再替换回来
byte[] res = rsacryptoserviceprovider.decrypt(convert.frombase64string(pwd.replace("%2b","+")), false);
return content(encoding.utf8.getstring(res));
}
catch (exception exception)
{
}
return content("");
}
private rsacryptoserviceprovider creatersaproviderfromprivatekey(string privatekey)
{
var privatekeybits = system.convert.frombase64string(privatekey);
var rsa = new rsacryptoserviceprovider();
var rsaparams = new rsaparameters();
using (binaryreader binr = new binaryreader(new memorystream(privatekeybits)))
{
byte bt = 0;
ushort twobytes = 0;
twobytes = binr.readuint16();
if (twobytes == 0x8130)
binr.readbyte();
else if (twobytes == 0x8230)
binr.readint16();
else
throw new exception("unexpected value read binr.readuint16()");
twobytes = binr.readuint16();
if (twobytes != 0x0102)
throw new exception("unexpected version");
bt = binr.readbyte();
if (bt != 0x00)
throw new exception("unexpected value read binr.readbyte()");
rsaparams.modulus = binr.readbytes(getintegersize(binr));
rsaparams.exponent = binr.readbytes(getintegersize(binr));
rsaparams.d = binr.readbytes(getintegersize(binr));
rsaparams.p = binr.readbytes(getintegersize(binr));
rsaparams.q = binr.readbytes(getintegersize(binr));
rsaparams.dp = binr.readbytes(getintegersize(binr));
rsaparams.dq = binr.readbytes(getintegersize(binr));
rsaparams.inverseq = binr.readbytes(getintegersize(binr));
}
rsa.importparameters(rsaparams);
return rsa;
}
private int getintegersize(binaryreader binr)
{
byte bt = 0;
byte lowbyte = 0x00;
byte highbyte = 0x00;
int count = 0;
bt = binr.readbyte();
if (bt != 0x02)
return 0;
bt = binr.readbyte();
if (bt == 0x81)
count = binr.readbyte();
else
if (bt == 0x82)
{
highbyte = binr.readbyte();
lowbyte = binr.readbyte();
byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
count = bitconverter.toint32(modint, 0);
}
else
{
count = bt;
}
while (binr.readbyte() == 0x00)
{
count -= 1;
}
binr.basestream.seek(-1, seekorigin.current);
return count;
}
}
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以上就是jquery+c#实现参数rsa加密传输功能技巧分享的详细内容。