triple des encryption online

Hi, here is the implementation of Triple DES on Java card. /* Package handson_crypto_des; import javacard. Framework. *; import javacard. Security. *; import javacardx. crypto. *;/***** class handson * */ Public Class Handsoncryptodes Extends Javacard. Framework. Applet { // Globals Secret ey secret ey; cipher ciphercbc; Final Short Dataoffset = (Short ) Iso7816.offset _ CDATA; Static Byt

); Return base64.encodetostring (bytes, base64.default); } catch (Exception e) {return null; } } 5.) Decryption Implementation /** * Gets the encoded value * * @param key * @param data * @return/Public static string decode (string Key, String data) {return decode (key, Base64.decode (data, Base64.default)); } /** * des algorithm, decryption * @param data to decrypt the string

algorithms that uses 3 64-bit keys to encrypt data three times. Data Encryption Standard (DES) is a long-standing encryption standard in the United States, which uses symmetric key cryptography. 3DES (i.e. Triple DES) is the DES

the i4, des_set_odd_parity:sets the parity of the passed i5, Des_is_weak_key:returns 1 is the passed key was a weak key, 0 if it is OK.6, Des_ecb_encrypt:the basic DES encryption routine that encrypts or decrypts a single 8-bytei7, des_ecb3_encrypt:encrypts/decrypts the i8, des_ecb2_encrypt:the macro is provided to perform Two-key Triple-

Package COM. jadyer. util. codec; import Java. security. key; import Java. security. nosuchalgorithmexception; import javax. crypto. cipher; import javax. crypto. keygenerator; import javax. crypto. secretkey; import javax. crypto. secretkeyfactory; import javax. crypto. spec. deskeyspec; import Org. apache. commons. codec. binary. base64; /*** DES symmetric encryption algorithm * @ see ====================

standard| Encryption | Decrypting this class is my online reference to a few documents summed up, test can be used directly, behind a section of MD5, should be independent into a class, I am lazy, so the test is written to a file, feeling is still full of practical, if there are any confidential documents, Use this thing to deal with, in the future to see when the reverse processing, but you do not forget t

Recently in the project, the issue of DES Encryption and decryption was encountered.Scene is the Android app side with Des encryption, PHP this side need to decrypt. No prior contact with Des this encryption and decryption algorit

called his replacement. Encryption principle: DES uses a 56-bit key and an additional 8-bit parity bit to produce the largest 64-bit packet size. This is an iterative grouping cipher, using a technique called Feistel, in which the encrypted text block is divided into two halves. Use a sub key to apply the loop function to half of them, then "XOR" the output to the other half, and then swap the two halves

The example of this paper describes the MD5 encryption and DES encryption and decryption algorithm classes implemented by ASP.net. Share to everyone for your reference, specific as follows: #region MD5 Algorithm Public string MD5 (string str, int code) { if (code = = 32)//32-bit encryption {return SYSTEM.WEB.S

substr ($text, 0,-1 * $pad); } } ?> Here is the test result: Copy Code code as follows: $str = ' 12345678 '; $key = ' 1234ABCD '; $crypt = new DES ($key); $mstr = $crypt->encrypt ($STR); $str = $crypt->decrypt ($MSTR); echo $str. ' Example 2 The code is as follows: Copy Code code as follows: /** * Encrypt parameters that need to be passed in the URL by get way */ function Args_encode ($data) {

The company has recently been doing a microcontroller and C # language communication. Socket communication is used. The transmitted data is plaintext and later discussed at the meeting is prepared with DES encryption (symmetric encryption) to do.Both parties agree on the corresponding "key".Previously encrypted encryption