C # implements an instance of Base64-based cryptographic decryption class

The example in this article describes the C # implementation of BASE64-based cryptographic decryption classes. Share to everyone for your reference. Specific as follows:

This C # class is a Base64 based encryption and decryption class, users can use the default key to encrypt, decrypt, or can set their own keys for encryption and decryption, very useful

Using system;using system.security.cryptography;using system.text;namespace dotnet.utilities{//<summary>// A summary description of the Encrypt.   </summary> public class Dencrypt {///<summary>//Construction method///</summary> public Dencrypt () {} #region Use the default key string to encrypt/decrypt string////<summary>/////Use the default key string to encrypt the string///</summary>//<param name= "or Iginal "> PlainText </param>//<returns> redaction </returns> public static string Encrypt (string original) {RET  Urn Encrypt (original, "sharejs.com"); }///<summary>///decrypt string with default key string///</summary>//<param name= "original" > Redaction </param>// /<returns> plaintext </returns> public static string Decrypt (string original) {return Decrypt (original, "sharejs.c  Om ", System.Text.Encoding.Default); #endregion #region Encrypt/decrypt string using the given key string///<summary>///////////////<p Aram Name= "original" > Original text </param>//<param NamE= "key" > Key </param>//<param name= "encoding" > character encoding scheme </param>//<returns> redaction </returns > public static string Encrypt (string original, string key) {byte[] buff = System.Text.Encoding.Default.GetBytes (o   riginal);   Byte[] KB = System.Text.Encoding.Default.GetBytes (key);  Return convert.tobase64string (Encrypt (BUFF,KB)); }//<summary>///decrypt string with the given key string///</summary>//<param name= "original" > Redaction </param>// /<param name= "key" > Key </param>//<returns> Clear text </returns> public static string Decrypt (string or  Iginal, string key) {return Decrypt (Original,key,system.text.encoding.default); }///<summary>///Use the given key string to decrypt string, return the specified encoding in plaintext///</summary>//<param name= "Encrypted" > Redaction </p aram>//<param name= "key" > Key </param>//<param name= "encoding" > character encoding scheme </param>//<re turns> plaintext </returns> public static string Decrypt (String encrypted, String key,encoding Encoding) {byte[] buff = convert.frombase64string (encrypted);   Byte[] KB = System.Text.Encoding.Default.GetBytes (key); return encoding.  GetString (Decrypt (BUFF,KB)); } #endregion #region Use the default key string to encrypt/decrypt/byte[]//<summary>///Use default key string to decrypt byte[]///</summary>//< param name= "Encrypted" > redaction </param>//<param name= "key" > Key </param>//<returns> plaintext </ returns> public static byte[] Decrypt (byte[] encrypted) {byte[] key = System.Text.Encoding.Default.GetBytes ("Share   Js.com ");  Return Decrypt (Encrypted,key); }///<summary>///Use the default key string to encrypt///</summary>//<param name= "original" > Raw data </param>//&L T;param name= "key" > Key </param>//<returns> redaction </returns> public static byte[] Encrypt (byte[]   Original) {byte[] key = System.Text.Encoding.Default.GetBytes ("sharejs.com");  Return Encrypt (Original,key); } #endregion #region Encrypt/decrypt with the given key/byte[]/<summary>//Generate MD5 Summary///</summary>/<param name= "original" > Data source </param>//<returns > Summary </returns> public static byte[] MakeMD5 (byte[] original) {MD5CryptoServiceProvider hashmd5 = new Md5crypt   Oserviceprovider ();   byte[] Keyhash = Hashmd5.computehash (original);   HASHMD5 = null;  return keyhash; }///<summary>///Use a given key to encrypt///</summary>/<param name= "original" > Clear text </param>//<par Am Name= "key" > Key </param>//<returns> redaction </returns> public static byte[] Encrypt (byte[] original, b   Yte[] key) {TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider (); Des.   Key = MakeMD5 (key); Des.   Mode = CIPHERMODE.ECB; Return DES. CreateEncryptor (). TransformFinalBlock (original, 0, original.  Length); }///<summary>///Use the given key to decrypt the data///</summary>//<param name= "Encrypted" > redaction </param>//< param name= "key" > Key </param>//&LT;RETURNS&Gt; plaintext </returns> public static byte[] Decrypt (byte[] encrypted, byte[] key) {TripleDESCryptoServiceProvider des =   New TripleDESCryptoServiceProvider (); Des.   Key = MakeMD5 (key); Des.   Mode = CIPHERMODE.ECB; Return DES. CreateDecryptor (). TransformFinalBlock (encrypted, 0, encrypted.  Length); } #endregion}}

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C # implements an instance of Base64-based cryptographic decryption class

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C # implements an instance of Base64-based cryptographic decryption class