cryptographic accelerator

1, Preface PHP encryption method is divided into single-hash encryption, symmetric encryption, asymmetric encryption of these categories.　　Like commonly used MD5, hash, crypt, SHA1 This is the single hash encryption, single hash encryption is irreversible.　　Like URL encoding, base64 encoding This is symmetric encryption, is reversible, that is, encryption and decryption are used with the same secret key. In addition to asymmetric encryption, encryption and decryption of the secret key is not the

8.1 Overview of asymmetric cryptographic algorithm directivesA. Asymmetric encryption algorithm also becomes public key algorithm, which solves the problem that the symmetric encryption algorithm key needs to be pre-allocated. Asymmetric Encryption Algorithm features: A1. The encryption key and decryption key are not the same A2. A key in a key pair can be exposed (known as a public key) A3. It is difficult to derive the private key key from the publi

Contact Discuz For some time, has been very fond of this forum program, is really a very good program, Gray is often worth learning, here is a cryptographic function (including decryption)This cryptographic function is characterized in that, more than the normal cryptographic function of a random key, can make ciphertext without any rules, even if the original an

, because the frequent use of asymmetric encryption is very wasteful performance, then SSH is a 256-bit length of password as the next pass the user name password encryption password, its crack difficult, presumably everyone knows, each has 0-9 kinds of changes. This is safe, I think it is very good, specific use is also easy to understand. Well, next into the actual operation, I'm using the Java language,First, you copy the following code snippet.' Package com.honzh.socket.base.rsa;Imp

(CTR―counter Register) mode:OFB, CTR Mode has the advantage of synchronous sequence cipher: no error spread.③ Ciphertext Feedback (CFB―cipher Feedback) mode:There is a limited error spread in the CFB mode: the decrypted plaintext block, MI, also has a 1bit error when there is a 1 bit error in the transmitted ciphertext block CI.Sequential application Mode of block cipher may be less efficient they (including other sequence ciphers) are generally used in lower levels of the data network and allo

Bouncy Castle is a lightweight, open-source cryptographic package for the Java platform. It supports a large number of cryptographic algorithms and provides the implementation of JCE 1.2.1. Since bouncy Castle is designed to be lightweight, it can be run from J2SE 1.4 to J2ME (including MIDP) platforms. It is the only complete cryptographic package that runs on M

Linux Installation Configuration varnish Web AcceleratorVarnish is a high-performance open-source HTTP accelerator that can be used for purely proxy servers, load balancing, but Varnish's primary function is cache acceleration, which is also the best place for it. The following describes how to install and use. Wget-c http://repo.varnish-cache.org/source/varnish-3.0.1.tar.gz Tar xzvf varnish-3.0.1.tar.gz CD varnish-3.0.1 ./configu

://soft.itbulu.com/tools/debian_net-speeder.sh SH debian_net-speeder.sh Because Chiang used here is the CentOS environment, so for the Debian environment does not go to test, basically the same last hint to start the command, we copied into the execution can be opened. Third, speed comparison after installing Net-speeder Accelerator tool So our current VPS has been installed Net-speeder too

There are a lot of friends who like to watch video clips online. But sometimes due to speed and other reasons, watch will be intermittent, here for you to recommend an excellent online video acceleration software videospeedy, it allows you to watch the video online more fluent; The software uses point-to-point transmission (peer-to-peer), p2sp, multitasking downloads, block cache and many other technologies ; Supports streaming media formats such as FLV, WMV, and RM/RMVB. The software is easy to

　　Netgameca (Online Games Express) is specifically for the network game encountered in the delay is too large, frequent drop, log slow and so on to improve the speed of a network of network optimization software. Online games in the country's major network nodes are set up a server, so that players all over the country can choose the best node to enjoy the perfect speed of the game. Whether from Unicom to telecommunications, from telecommunications to China Unicom, or from the education network

installation under PHP 5.4 method: Execute the following command in turn wget http://pecl.php.net/get/zendopcache-7.0.2.tgz tar xzf zendopcache-7.0.2.tgz cd zendopcache-7.0.2 phpize If you can not find phpize, I find the PHP path, my/usr/local/php/bin/phpize, the following line will also be in accordance with your php.ini path to modify their own ./configure--with-php-config=/usr/local/php/bin/php-config Make do install If installing shared extensions is displayed:/usr/local/php/lib/php/extensi

data in the data cache is several hundred times faster than reading data on the hard disk. Therefore, expanding the memory of the database server can effectively improve the database performance, especially when operating large databases. However, the database servers currently widely used by enterprises are 32-bit operating systems. The 32-bit operating system has the maximum memory usage limit. Generally, the Standard 32-bit address can use a maximum of 4 GB memory. If the database administra

Android custom components (mobile accelerator ball + fluctuating water surface) First view results This project is implemented in three steps.[1] fluctuation of Water Surface Implementation CodeFirst draw a wave line, through the besell Curve for (int i = 0; i Then let the curve work. private Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.

1 Varnish Introduction Varnish is a high-performance and open-source reverse proxy server and HTTP accelerator (cache server ). Its developer Poul-Henning Kamp is one of FreeBSD's core developers. Varnish adopts a new software architecture, which works closely with the current hardware system. In addition to primary memory, the memory of the current computer system also includes CPU L1 cache, L2 cache, and even L3 cache. The hard disk is also cached,

Download Accelerator prozilla on linux-Linux general technology-Linux technology and application information. The following is a detailed description. The download speed on linux has always been a problem because linux is not used by many Chinese netizens and has no base. Even if there is no need for iflytek, even the widely used express flash get, the download speed is always a problem. Linux users often like wget, a simple and easy-to-use tool. wge

PHP free accelerator, PHPAccelerator. Php-accelerator.co.uk can be downloaded, is a strong opponent of zend. Yes. I am using it. The results are good. Modify php. ini Plus: zend_extensionusrlocalli http://php-accelerator.co.uk/downloadable, is a strong opponent of zend. Yes. I am using it. The results are good. Modify php. ini and add: Zend_extension =/usr/local/lib/php_accelerator_1.3.3r2.so Phpa = on Phpa. tweaks = on Phpa. cache_dir =/tmp Phpa. fil

EAccelerator is an open-source PHP accelerator that optimizes programs, encoders, and dynamic content caching. It caches PHP scripts during compilation to improve the performance of PHP scripts, therefore, the system overhead can be almost eliminated during compilation. It can also optimize scripts to accelerate their execution speed. Using eAccelerator can reduce the server load and increase the execution time of PHP code. EAccelerator configuration

PHP accelerator eAccelerator configuration User Guide # Tar-zxvf./eaccelerator-0.9.5-beta2.tar.bz2 # Cd eaccelerator-0.9.5-beta2 # Export PHP_PREFIX = "/usr/local" (import the PHP installation directory to the environment variable. the default value of FreeBSD is/usr/local) # $ PHP_PREFIX/bin/phpize #./Configure -- enable-eaccelerator = shared -- with-php-config = $ PHP_PREFIX/bin/php-config # Make

This article mainly introduces the installation and configuration notes of the PHP accelerator APC in Linux. This article also describes how to install apc in Windows, need a Friend can refer to the current I use a APC-3.1.9 stable, you can go to the http://pecl.php.net/package/APC to download the latest version. 1. Installation The code is as follows: Wget http://pecl.php.net/get/APC-3.1.9.tgzTar xzvf APC-3.1.9.tgzCd APC-3.1.9/Usr/local/php/bin/ph

-end host group when the server is again in effectBackend Websrv1 {. host = "192.168.0.131";. Port = "80";. Probe = {. url = "/";. interval = 1s;.window = 8;# Number of detections. threshold = 5;# Minimum number of successes. timeout = 2s; # timeout Time}backend websrv1 {. host = "192.168.0.133";. Port = "80";. Probe = {. url = "/";. interval = 1s;.window = 8;# Number of detections. threshold = 5;# Minimum number of successes. timeout = 2s; # Time Out}When the HTTP service of 133 server is stopp