using System using System.Collections.Generic; using System.Linq; using
System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Security.Cryptography;
Using System.Text;
public static string Getmd5password (string password) {MD5CryptoServiceProvider crypto = new MD5CR
Yptoserviceprovider ();
byte[] bytes = Encoding.UTF7.GetBytes (password);
bytes = Crypto.computehash (bytes);
StringBuilder sb = new StringBuilder (); foreach (Byte num in bytes) {sb.
AppendFormat ("{0:x2}", num); Return SB.
ToString ();
public static string Getsha512password (string password) {byte[] bytes = Encoding.UTF7.GetBytes (password);
Byte[] result;
SHA512 sham = new sha512managed ();
result = Sham.computehash (bytes);
StringBuilder sb = new StringBuilder (); foreach (byte num in result) {sb.
AppendFormat ("{0:x2}", num); Return SB.
ToString (); }
<pre class= "CSharp" name= "code" > private static string HashString256 (String Stringtohash, String hachkey)
{ c1/>utf8encoding Myencoder = new UTF8Encoding ();
byte[] key = Myencoder.getbytes (Hachkey);
byte[] Text = myencoder.getbytes (stringtohash);
System.Security.Cryptography.HMACSHA256 myHMACSHA256 = new System.Security.Cryptography.HMACSHA256 (key);
byte[] Hashcode = Myhmacsha256.computehash (text);
String hash = bitconverter.tostring (hashcode). Replace ("-", "");
return hash. ToLower ();
}
Baidu's MD5 encryption, unlike the one above. Public
static string MD5 (string password)
{
byte[] textbytes = System.Text.Encoding.Default.GetBytes (password);
Try
{
System.Security.Cryptography.MD5CryptoServiceProvider crypthandler;
Crypthandler = new System.Security.Cryptography.MD5CryptoServiceProvider ();
Byte[] hash = Crypthandler.computehash (textbytes);
string ret = "";
foreach (Byte A in hash)
{
if (a <) ret + +
"0" + a.tostring ("x");
else
ret = a.tostring ("x");
}
return ret;
}
Catch
{
throw;
}
}
Note: MD5 generates 32-bit passwords
SHA512 generates a 128 password
SHA256 generates a 64 password
Reversible Cryptographic algorithm: the number of digits produced is determined by the length of the password itself
Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Security.Cryptography;
Using System.IO;
namespace Glacierv2.common {public static class Global {private static int _newdbprimarykeyseed = 0;
#region encryption and decryption algorithm private static symmetricalgorithm Mobjcryptoservice = new RijndaelManaged ();
<summary>///obtain key///</summary>///<returns> key </returns>
private static byte[] Getlegalkey () {String stemp = "XFSDFGSFGSDGSDFGSDFG";
Mobjcryptoservice.generatekey ();
byte[] Byttemp = Mobjcryptoservice.key;
int keylength = Byttemp.length;
if (Stemp.length > keylength) stemp = stemp.substring (0, keylength);
else if (Stemp.length < keylength) Stemp = Stemp.padright (Keylength, ""); Return ASCIIEncoding.ASCII.GetBytes(stemp); ///<summary>///Get initial vector iv///</summary>///<returns> First Vector IV </returns> private static byte[] Getlegaliv () {String stemp = ' Swetwerehetyeryertyer
Ty ";
Mobjcryptoservice.generateiv ();
byte[] Byttemp = MOBJCRYPTOSERVICE.IV;
int ivlength = Byttemp.length;
if (Stemp.length > ivlength) stemp = stemp.substring (0, ivlength);
else if (Stemp.length < ivlength) Stemp = Stemp.padright (Ivlength, "");
Return ASCIIEncoding.ASCII.GetBytes (stemp); ///<summary>///Encryption method///</summary>///<param name= "Source" &G T; strings to encrypt </param>///<returns> encrypted string </returns> public static string Encrypto (string
SOURCE) {byte[] Bytin = UTF8Encoding.UTF8.GetBytes (source); MemoryStream ms = new MemoryStream ();
Mobjcryptoservice.key = Getlegalkey ();
MOBJCRYPTOSERVICE.IV = Getlegaliv ();
ICryptoTransform encrypto = Mobjcryptoservice.createencryptor ();
CryptoStream cs = new CryptoStream (MS, Encrypto, CryptoStreamMode.Write); Cs.
Write (bytin, 0, bytin.length); Cs.
FlushFinalBlock (); Ms.
Close (); Byte[] Bytout = Ms.
ToArray ();
Return convert.tobase64string (bytout); ///<summary>///Decryption method///</summary>///<param name= "Source" &G t; to be decrypted string </param>///<returns> decrypted string </returns> public static string Decrypto (string
SOURCE) {byte[] Bytin = convert.frombase64string (source);
MemoryStream ms = new MemoryStream (bytin, 0, bytin.length);
Mobjcryptoservice.key = Getlegalkey (); MOBJCRYPTOSERVICE.IV = GetlEgaliv ();
ICryptoTransform encrypto = Mobjcryptoservice.createdecryptor ();
CryptoStream cs = new CryptoStream (MS, Encrypto, CryptoStreamMode.Read);
StreamReader sr = new StreamReader (CS); return Sr.
ReadToEnd ();
} #endregion}}