MD5.JS的hex_hmac_md5方法加密得到的密码，怎么用.net后台加密得到一样的密码

[1102441605]

JS的hex_hmac_md5方法加密得到的密码，怎么用.net后台加密得到一样的密码：

代码为：
<script src="JS/md5.js" type="text/javascript"></script>
<script type="text/javascript">
function clickFun() {
var str = 'abcd';
var c = hex_hmac_md5(str,str);
alert(c);//密码为：1faa00eb25c23ca3ac47d7cceab1a33f
}
</script>


现在怎么让后台加密 “abcd” 同样得到相同密码：1faa00eb25c23ca3ac47d7cceab1a33f

[1102441605]

求高手指导啊，求大神

[wangweimutou]

[winnowc]

var bytes = Encoding.Default.GetBytes("abcd");
var hmacmd5 = new HMACMD5 { Key = bytes };
var hash = hmacmd5.ComputeHash(bytes);
var c = string.Concat(hash.Select(b => b.ToString("x2")));
Console.WriteLine(c);

[openset]

using System.Text;
using System.Security.Cryptography;
public static string GetSignByHmacMd5(string key, string code)
        {
            byte[] keyBytes = Encoding.Default.GetBytes(key);
            byte[] hasCodeBytes = Encoding.Default.GetBytes(code);
            string result = string.Empty;
            using (HMACMD5 hmac = new HMACMD5(keyBytes))
            {
                byte[] hashValue = hmac.ComputeHash(hasCodeBytes);
                result = string.Concat(hashValue.Select(b => b.ToString("x2")));              
            }
            return result.ToUpper();
 }

[wanghui0380]

额，微软其实自己就用HMACMD5类，所以你只需要查msdn手册就ok了