AES encryption and decryption implementations of PHP, Java, net, and JavaScript

# PHP Articles

 
  ';    Echo (Base64_encode ($encrypted));    Echo '
';    Decryption    $encryptedData = Base64_decode ("2fbww9+8vpid2/foafzq6q==");    $decrypted = Mcrypt_decrypt (mcrypt_rijndael_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv);    Echo ($decrypted);? >

#Javascript篇

# Java Chapter

Import Javax.crypto.cipher;import Javax.crypto.spec.ivparameterspec;import Javax.crypto.spec.secretkeyspec;import    Org.junit.Test;        @Test public void Testcrosslanguageencrypt () throws exception{System.out.println (Encrypt ());    System.out.println (Desencrypt ());            public static string Encrypt () throws Exception {try {string data = "Test String";            String key = "1234567812345678";            String IV = "1234567812345678";            Cipher Cipher = cipher.getinstance ("aes/cbc/nopadding");            int blockSize = Cipher.getblocksize ();            byte[] databytes = Data.getbytes ();            int plaintextlength = Databytes.length;  if (plaintextlength% blockSize! = 0) {plaintextlength = Plaintextlength + (blockSize-(plaintextlength%            BlockSize));            } byte[] plaintext = new Byte[plaintextlength];            System.arraycopy (databytes, 0, plaintext, 0, databytes.length); SecreTkeyspec Keyspec = new Secretkeyspec (Key.getbytes (), "AES");            Ivparameterspec Ivspec = new Ivparameterspec (Iv.getbytes ());            Cipher.init (Cipher.encrypt_mode, Keyspec, Ivspec);            Byte[] encrypted = cipher.dofinal (plaintext);        return new Sun.misc.BASE64Encoder (). Encode (encrypted);            } catch (Exception e) {e.printstacktrace ();        return null; }} public static string Desencrypt () throws Exception {try {String data = "2fbww9+8vpid2            /foafzq6q== ";            String key = "1234567812345678";            String IV = "1234567812345678";            byte[] encrypted1 = new Sun.misc.BASE64Decoder (). Decodebuffer (data);            Cipher Cipher = cipher.getinstance ("aes/cbc/nopadding");            Secretkeyspec Keyspec = new Secretkeyspec (Key.getbytes (), "AES");            Ivparameterspec Ivspec = new Ivparameterspec (Iv.getbytes ());       Cipher.init (Cipher.decrypt_mode, Keyspec, Ivspec);     byte[] Original = cipher.dofinal (encrypted1);            String originalstring = new String (original);        return originalstring;            } catch (Exception e) {e.printstacktrace ();        return null; }    }

#. NET article

Using system;using system.collections.generic;using system.linq;using system.text;using            System.security.cryptography;namespace test{class Class1 {static void Main (string[] args) {            Console.WriteLine ("I am comming");            String Source = "Test String";            String EncryptData = class1.encrypt (source, "1234567812345678", "1234567812345678");            Console.WriteLine ("=1==");            Console.WriteLine (EncryptData);            Console.WriteLine ("=2==");            String decryptdata = Class1.decrypt ("2fbww9+8vpid2/foafzq6q==", "1234567812345678", "1234567812345678");            Console.WriteLine (Decryptdata);            Console.WriteLine ("=3==");        Console.WriteLine ("I'll go Out"); public static string Encrypt (string toencrypt, String key, String iv) {byte[] Keyarray = utf8e Ncoding. UTF8.            GetBytes (key);            byte[] Ivarray = UTF8Encoding.UTF8.GetBytes (iv); byte[] Toencryptarray = UTF8Encoding.UTF8.GetBytes (Toencrypt);            RijndaelManaged Rdel = new RijndaelManaged ();            Rdel.key = Keyarray;            RDEL.IV = Ivarray;            Rdel.mode = CIPHERMODE.CBC;            rdel.padding = Paddingmode.zeros;            ICryptoTransform ctransform = Rdel.createencryptor ();            byte[] Resultarray = Ctransform.transformfinalblock (toencryptarray, 0, toencryptarray.length);        Return convert.tobase64string (resultarray, 0, resultarray.length); public static string Decrypt (string todecrypt, String key, String iv) {byte[] Keyarray = utf8e Ncoding. UTF8.            GetBytes (key);            byte[] Ivarray = UTF8Encoding.UTF8.GetBytes (iv);            byte[] Toencryptarray = convert.frombase64string (Todecrypt);            RijndaelManaged Rdel = new RijndaelManaged ();            Rdel.key = Keyarray;            RDEL.IV = Ivarray;            Rdel.mode = CIPHERMODE.CBC;            rdel.padding = Paddingmode.zeros; IcrypTotransform ctransform = Rdel.createdecryptor ();            byte[] Resultarray = Ctransform.transformfinalblock (toencryptarray, 0, toencryptarray.length);        Return UTF8Encoding.UTF8.GetString (resultarray); }    }}

The requirements for cross-language plus decryption are: aes/cbc/zeropadding 128-bit mode, key and IV, encoding unified with Utf-8. If you do not support zeropadding, use nopadding.

The above describes the PHP, Java, NET and JavaScript AES encryption and decryption implementation, including the aspects of the content, I hope the PHP tutorial interested in a friend helpful.

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