asymmetric encryption example

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Detailed DES encryption algorithm and the use of the Java program Example _java

the output of the left 32-bit, R0 is the right 32-bit, example: set to change before the input value of d1d2d3 ... D64, the result after the initial permutation is: L0=d58d50 ... D8; R0=d57d49 ... D7.The replacement rules are shown in the following table: 58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4, 62,54,46,38,30,22,14,6,64,56,48,40,32,24,16,8, 57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3, 61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7,

Ucenter reversible encryption function authcode usage example

Ucenter reversible encryption function authcode usage example This article describes how to use the authcode function of a reversible encryption function in ucenter. this authcode function is found when you browse the ucenter source code for encryption and decryption, and the effect is good. Ucenter r

Example to explain Java Pure Digital encryption and decryption _java

We all know that when users add information, some of the more sensitive information, such as ID card number, mobile phone number, user login password and other information, is not directly clear to the database. Today we take a concrete example to illustrate the pure digital Java encryption and decryption technology. After we get the information from the page to the user, we encrypt it and then save it to

Example of php encryption and decryption with a key

This article mainly introduces the example of php encryption and decryption. For more information, see. This article mainly introduces the example of php encryption and decryption. For more information, see. The Code is as follows: $ Id = "http://www.jb51.net ";$ Token = encrypt ($ id, 'E', 'jb51 ');Echo '

Example analysis of the encode64 encryption algorithm implemented by JavaScript and encode64 instance analysis

Example analysis of the encode64 encryption algorithm implemented by JavaScript and encode64 instance analysis This example describes the encode64 encryption algorithm implemented by JavaScript. Share it with you for your reference. The details are as follows: This JavaScript code can implement the encode64

RC4 encryption and decryption algorithm principle and complete source code example demonstration

arbitrarily defined: char key[256]; parameter 3 is the length of the key, Len = strlen (key), void Rc4_init (unsigned char *s, unsigned char *key, unsigned long Len) {int I =0, j = 0, k[256] = {0};uns igned char tmp = 0;for (i=0;iVulnerabilityBecause the RC4 algorithm encryption is the XOR, so, once the sub-key sequence has been duplicated, ciphertext can be cracked. For more information on how to hack XOR encryp

15th Chapter Encryption Algorithm example registration login (Message digest algorithm)

ImportOrg.apache.ibatis.annotations.Select;8 9 ImportCom.xxx.model.User;Ten One Public InterfaceUsermapper { A -@Insert ("Insert into userinfo (username, password) VALUES (#{username},#{password})") - Public intinsertuser (user user); the -@Select ("select * from userinfo WHERE username = #{username} and password = #{password}") -@Results (value = {@Result (id =true, column = "id", property = "id"), -@Result (column = "username", property = "username"), +@Result (column = "Pas

MD5 encryption example

Encryption is often used in daily work. Today I wrote a simple example of using MD5 encryption, and now I paste the source code. Md5utils class Package COM. dengsilinming. test; import Java. io. unsupportedencodingexception; import Java. security. messagedigest; import Java. security. nosuchalgorithmexception;/***** @ author dengsilinming * @ date 2012-12-27 am 1

Simple example of using. Net symmetric encryption

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Using System; Using System. Security. cryptography; Using System. text; Using System. IO; /// /// Example of Using symmetric encryption /// Class Class1{ Static Void Main ( String [] ARGs){Class1 C = New Class1 ();C. startdemo ();} Public Void Startdemo (){ // Establ

Example of base64_decode and base64_encode encryption and decryption functions in php

This article mainly introduces base64_decode and base64_encode encryption and decryption functions in php. the instance analyzes the specific usage of base64 encryption and decryption functions, which has some practical value, for more information about base64_decode and base64_encode encryption and decryption functions in php, see the following

PhpDES encryption and decryption code example

PhpDES encryption and decryption code example /** * Php des encryption and decryption * By http://bbs.it-home.org */ Function do_mencrypt ($ input, $ key) { $ Input = str_replace ("" n "," ", $ input ); $ Input = str_replace ("" t "," ", $ input ); $ Input = str_replace ("" r "," ", $

Example of base64_decode and base64_encode encryption and decryption functions in php

This article mainly introduces base64_decode and base64_encode encryption and decryption functions in php. the instance analyzes the specific usage of base64 encryption and decryption functions, which has some practical value, for more information about base64_decode and base64_encode encryption and decryption functions in php, see the following

Java Encryption Program Small example

1: A company uses a public telephone to pass data, and the data is a four-bit integer that is encrypted during delivery.The encryption rules are as follows: Each digit is prefixed with 5, and the remainder is replaced with and divided by 10, then the first and fourth bits are exchanged, and the second and third bits are exchanged.Package Cn.zzsxt.lianxi;Import Java.util.Scanner;public class Practice {public static void Main (string[] args) {System.out

Example of AES encryption and decryption in php _ php instance

Put the code first. There are two files: AES. php (aes algorithm file) and aesDemo. php (application instance file) aesDemo. php: Example, The Code is as follows: Require_once ('./AES. php ');// $ Aes = new AES ();$ Aes = new AES (true); // stores encrypted strings in hexadecimal format.// $ Aes = new AES (true, true); // The encrypted string is stored in hexadecimal format with debugging information$ Key = "this is a 32 byte key"; // key$ Keys =

A complete example of SHA-256 encryption algorithm implemented by Javascript

This article mainly introduces the SHA-256 encryption algorithm implemented by Javascript, analyzes the specific steps and related skills of JavaScript to implement SHA-256 encryption in the form of a complete example, A friend can refer to the example of this article describes the Javascript implementation of the SHA-

PHP code based on the implementation of encryption and decryption class complete example _php skills

This article illustrates the PHP code encryption and decryption class based on PHP implementation. Share to everyone for your reference, specific as follows: PHP code encryption class, you can change according to their needs, the original class such as, the example in Ubuntu under the Test no problem. PS: About encr

Example of php encryption and decryption with a key: _ php instance

This article mainly introduces the example of php encryption and decryption. For more information, see. The Code is as follows: $ Id = "http://www.php.net ";$ Token = encrypt ($ id, 'E', 'php ');Echo 'encryption: '. encrypt ($ id, 'E', 'php ');Echo'';Echo 'decryption: '. encrypt ($ token, 'D', 'php '); /*************************************** ****************

Example of php encryption and decryption with a key

This article mainly introduces the example of php encryption and decryption. For more information, see. The code is as follows: $ Id = "http://www.bitsCN.com "; $ Token = encrypt ($ id, 'e', 'jb51 '); Echo 'encryption: '. encrypt ($ id, 'e', 'jb51 '); Echo' '; Echo 'decryption: '. encrypt ($ token, 'D', 'jb51 '); /*************************************** ******

PHP Common String Function Example summary "conversion, substitution, calculation, interception, encryption"

This article summarizes PHP's common string function. Share to everyone for your reference, as follows: Nl2br Function: RTrim Function: Clear the blank on the right Strip_tags Function: Clear the HTML and PHP tags in the string Strtolower and Strtoupper Functions: Converting to uppercase and lowercase Trim Function: Remove the leading and trailing spaces Str_ireplace function: Replace Str_repeat Function: Repeat a string multiple times Str_replace Function: Case-sensitive substitution

Php reversible encryption function code example

Php reversible encryption function code example // Encrypt the data and write it to the cookie $ Cookie_data = $ this-> encrypt ("nowamagic", $ data ); $ Cookie = array ( 'Name' => '$ data ', 'Value' => $ cookie_data, 'Expire '=> $ user_expire, 'Domain '=> '', 'Path' => '/', 'Prefix' =>'' ); $ This-> input-> set_cookie

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