c#md5加密

1. 首先建立MD5的雜湊演算法。
    ((HashAlgorithm)System.Security.Cryptogrophy.CryptoConfig.CreateFromName("MD5")).ComputeHash(System.Text.UTF8.GetBytes(input))
2.計算雜湊值
    使用方法:ComputeHash(byte[] value);
3.轉化成字串.
    

 1protected virtual string HashMD5(string input)
 2        {
 3            byte[] result = ((HashAlgorithm)System.Security.Cryptography.CryptoConfig.CreateFromName("MD5")).ComputeHash(System.Text.Encoding.UTF8.GetBytes(input));
 4            StringBuilder output = new StringBuilder(16);            
 5                                    
 6            for (int i = 0; i < result.Length; i++) 
 7            {                            
 8                // convert from hexa-decimal to character
 9                output.Append((result[i]).ToString( "x2", System.Globalization.CultureInfo.InvariantCulture));                
10            }
11            return output.ToString();
12        }
13