keystroke encryption

Examples, examples of PHP encryption decryption The code is as follows Copy Code Cryptographic functions /** Function: Encrypt string to handle* Parameter one: Content that needs to be encrypted* Parameter two: key*/function Passport_encrypt ($STR, $key) {//cryptographic functionsSrand (Double) microtime () * 1000000);$encrypt _key=md5 (rand (0, 32000));$ctr = 0;$tmp = ';for ($i =0; $i $ctr = $ctr ==strlen ($encrypt _key)

WORD2007 encryption and Cancellation encryption method Encrypt a document 1, click the Office button in the upper-left corner of the window and select Prepare, and then click the Encrypt document item. 2. Eject the "Encrypt document" dialog box, enter the password in the Password box, and click "OK" button. 3, the "Confirm Password" dialog box will be popped up, and then click

Client hash encryption (Javascript hash encryption, with source code), javascriptSummary It is hard to imagine the network environment in which users use the applications we developed. If the network environment in which users are located is not a trusted environment, the user's account security may be threatened, for example, when a user logs on, the account and password submitted by the user are stolen by

Objective: These days the company temporarily pulled to do Android IM instant Messaging protocol implementation, the general view of their agreement, because the previous did not participate, is said to be due to server performance restrictions, only to achieve a non-clear delivery, specific reasons I am not clear, but the encryption used here is the use of XOR or encryption. This

app Cottage Crazy Love encryption APK encryption platform anti-cracking, Android system because of its open source, now occupy the global Smart machine near 80% WP system and Apple's ios system. However, it is also due to open source, android piracy app app through advertising harassment, theft of accounts, theft of privacy, remote control, malicious deduction fees, shopping fraud and other

PHP learning-PHP encryption, PHP learning-PHP Encryption There are several encryption methods in PHP:1. MD5 Encryption String md5 (string $ str [, bool $ raw_output = false]) Parameters Str -- the original string. Raw_output -- if the optional raw_output is set to TRUE, the MD5 message digest is returned in the origina

This article describes some of the encryption tips for developing mobile games using Cocos2d-x. If you have any questions, please correct me.Many other information see: http://blog.csdn.net/chengyingzhilian/article/details/25540441This address:http://blog.csdn.net/chengyingzhilian/article/details/25957895Okay, here's the subject of this article-- Data Encryption : to encrypt the data, you have to mention an

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 algorithm, but think there will definitely be demo. So Baidu, search the code to use. Online code is also a mixed bag, and finally test the PH

Simple implementation of PHP encryption technology and php encryption technology 1. MD5 Encryption Take a logon page as an example: I remember that MD5 is also used for comparison, so the password is saved when there is a database. mysql> SELECT * FROM user;+----+----------+----------------------------------+| id | username | password |+----+--------

Before everyone has summed up, based on the key exchange DH algorithm, now for you to introduce a factor decomposition based RSA algorithm, this encryption algorithm has two implementation forms: 1, public key encryption, private key decryption, 2, private key encryption, public key decryption. The following for you to analyze the implementation of code, compared

Symmetric encryption, decryption, encryption and decryption ///

= "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789+/";var str = "";for (var i = 0; i {var triplet = (((binarray[i >> 2] >> 8 * (i%4)) 0xFF) | (((binarray[i+1 >> 2] >> 8 * ((i+1)%4)) 0xFF) | ((binarray[i+2 >> 2] >> 8 * ((i+2)%4)) 0xFF);for (var j = 0; J {if (I * 8 + J * 6 > Binarray.length * +) str + = B64pad;else str + = Tab.charat ((triplet >> 6* (3-j)) 0x3F);}}return str;}Call Method:var username = document.getElementById ("username"). Value;var hash = hex_md5 (username);do

MD5 encryptionprivate static string Getmd5hash (String emailaddress){byte[] data = MD5. Create (). ComputeHash (Encoding.UTF8.GetBytes (EmailAddress));var sbuilder = new StringBuilder ();for (int i = 0; i {Sbuilder.append (Data[i]. ToString ("X2"));}return sbuilder.tostring ();}public static string Sha256 (string plaintext) { sha256managed _sha256 = new sha256managed (); byte[] _ciphertext = _sha256.computehash (Encoding.Default.GetBytes (plaintext)); Retu

Title if not the same how to use PHP to write Javascipt MD5 encryption method Reply content: Title if not the same how to use PHP to write Javascipt MD5 encryption method First of all you know what to do when MD5. You can refer to Google alive this article: http://segmentfault.com/blog/liangyi/1190000002409125 In general: MD5 is a kind of information digest algorithm, which is independent of the sp

This class is summarized by referring to several documents on the Internet. It can be used directly after tests. There is a section of MD5 which should be independent of one class. I am lazy, so I wrote it into a file during the test. It still feels practical. If there is any confidential file, I will use it to handle it. In the future, I will handle it in turn, it's just that you should not forget the password. If you are as lazy as me, you can directly copy the following code and use it direct

Javascript front-end encryption, java backend decryption, and JS front-end encryption Due to project requirements, user information needs to be encrypted (take logon as an example), and username and password are encrypted in front-end js for transmission. Then perform decryption in the background first. It is not encrypted for Transmission Encrypted transmission We can see from the above that if you do

Classic PHP encryption and decryption function Authcode () fix version code, encryption and decryption authcode Many people use the Authcode function. This function comes from the Discuz program and is used to encrypt and decrypt strings. It can be used to set the key and expiration time. The original function code may generate characters such as +,/, and . As a result, the function code is escaped when the

[PHP] Oauth authorization and local encryption, phpoauth authorization Encryption 1. oauth is an open standard that allows users to allow third-party applications to access private resources (such as photos, videos, and contact lists) stored on a website ), instead of providing the user name and password to a third party Keyword: appKey appSecret token) 2. SSO authorization If the Weibo client is installe

Node. js Data Encryption Transmission Analysis, node. js Data Encryption Preface For encrypted data transmission, there are several methods that people often use. One is ciphertext transmission, and the other is ciphertext transmission. The other is to encrypt data using keys and decrypt data using public keys, the transmission channel can be https or http. The premise of plaintext transmission is to establ

Use md5 encryption in iOS and md5 encryption in ios # Import @ Implementation MD5Util + (NSString *) encode :( NSString *) value { [Value retain]; Const char * cStr = [value UTF8String]; [Value release]; Unsigned char result [16]; CC_MD5 (cStr, strlen (cStr), result); // This is the md5 call Return [NSString stringWithFormat: @ "% 02x % 02x % 02x % 02x % 02x % 02x % 02x % 02x % 02x % 02x % 02