MD5 encryption Summary

 1   #region MD5
 2         /// <summary>
 3         /// 16位MD5加密
 4         /// </summary>
 5         /// <param name="password"></param>
 6         /// <returns></returns>
 7         public static string MD5Encrypt16(string strByMd5)
 8         {
 9             var md5 = new MD5CryptoServiceProvider();
10             string t2 = BitConverter.ToString(md5.ComputeHash(Encoding.Default.GetBytes(strByMd5)), 4, 8);
11             t2 = t2.Replace("-", "");
12             return t2;
13         }
14 
15         /// <summary>
16         /// 32位MD5加密
17         /// </summary>
18         /// <param name="password"></param>
19         /// <returns></returns>
20         public static string MD5Encrypt32(string strByMd5)
21         {
22             string cl = strByMd5;
23             string pwd = "";
 24              the MD5 md5 = MD5.Create (); // instantiate a md5 of image
 25              @ encrypted is a byte array type, the code selector to note here UTF8 / Unicode or the like　
26 is              byte [] S = md5. the ComputeHash (Encoding.UTF8.GetBytes (Cl));
 27              // by using a loop, the type byte array into a string of characters, the character is formatted conventionally obtained 
28              for ( int I = 0 ; I <S .length; I ++ )
 29              {
 30                  // string obtained hexadecimal format type. After formatting character lowercase letters, uppercase if (X) after the character format is uppercase character 
31 is                  pwd pwd = S + [I] .ToString ( " X- " );
 32              }
 33 is             return pwd;
 34 is          }
 35  
36          public  static  String MD5Encrypt64 ( String strByMd5)
 37 [          {
 38 is              String Cl = strByMd5;
 39              // String pwd = ""; 
40              the MD5 md5 = MD5.Create (); // instantiate a pair of image md5
 41              // encrypted is a byte array type, the code selector to note here UTF8 / Unicode or the like　
42 is              byte [] S = md5.ComputeHash (Encoding.UTF8.GetBytes (Cl));
 43 is              return Convert.ToBase64String (S );
 44 is          }
 45          #endregion
46 is  
47          #region the file MD5 process
 48          ///  <Summary> 
49          /// file MD5 encryption stream
 50          ///  </ Summary> 
51 is          public  static  String MD5Stream (Stream Stream)
 52 is          {
 53 is              the MD5CryptoServiceProvider MD5 = new new the MD5CryptoServiceProvider ();
 54 is              md5.ComputeHash (Stream);
 55              byte [] B = md5.Hash;
 56 is              md5.Clear ();
 57 is              the StringBuilder SB = new new the StringBuilder ( 32 );
58              for ( int I = 0 ; I <b.length; I ++ )
 59              {
 60                  sb.append (B [I] .ToString ( " an X2 " ));
 61 is              }
 62 is              return sb.ToString ();
 63 is          }
 64  
65          ///  <Summary> 
66          /// the file MD5 encryption
 67          ///  </ Summary> 
68          public  static  String MD5Stream ( String filePath)
 69          {
 70              the using(= The FileStream Stream File.Open (filePath, FileMode.Open))
 71 is              {
 72                  return MD5Stream (Stream);
 73 is              }
 74          }
 75  
76          #endregion 
77  
78     ///  <Summary> 
79          /// Gets MD5 value (to the word section array the MD5)
 80          ///  </ Summary> 
81          ///  <param name = "fileBytes"> </ param> 
82          ///  <Returns> </ Returns> 
83          public  static  String GetMd5 ( byte [] fileBytes )
 84          {
 85              var= The MD5 System.Security.Cryptography.MD5.Create () the ComputeHash (fileBytes);.
 86              // The md5byte [] array to a string 
87              var str_md5 = Convert.ToBase64String (the MD5);
 88              return str_md5;
 89          }