encryption decoder

PHP Learning--php Encryption, PHP learning--php encryption There are several types of encryption 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, then the MD5 Digest is returned in the original b

Introduction to Cryptographic algorithms I. Cryptography INTRODUCTION According to records, in 400 BC, the ancient Greeks invented the replacement code. 1881 the world's first telephone secrecy patent appeared. During the Second World War, the German military enabled the "Enigma" cipher Machine, which played a very important role in the war. With the development of information and digital society, People's awareness of the importance of security and confidentiality has been increasing, so in 19

Des:Digital Encryption Standard. Obsolete Standard.Single key algorithm is the sender of the information using key A for data encryption, the receiver of the information uses the same key a for data decryption. The single key algorithm is a symmetric algorithm.The algorithm is good at adding/solving speed, the key volume is short, symmetric encryption is used Dsa

Practical PHP shared with public key encryption class (different encryption results every time), php encrypted. Practical PHP shared with public key encryption (different encryption results every time), php encrypted WEB interaction security has always been the primary solution for major websites, the PHP

Android DES encryption related implementation, a simple implementation of a moment, today to sum up: DES encryption Introduction:des is a symmetric encryption algorithm, the so-called symmetric encryption algorithm is: Encryption and decryption using the same key algorithm.

PHP and Javades encryption and decryption instances, and des encryption and decryption. For PHP and Javades encryption and decryption instances, des encryption and decryption des encryption is a more popular encryption method for

Caesar Code 1. Introduce Caesar cipher as one of the most ancient symmetric encryption system, in ancient Rome has been very popular, his basic idea is: by moving the letters to a certain number of digits to achieve encryption and decryption. All letters in the plaintext are replaced Cheng Mi-wen after they are offset (or forward) by a fixed number on the alphabet. For example, when the offset is 3, all t

byte array holds the multimedia information.The next important step is to write the encoder and decoder, the idea is very simple, according to the information sent by the corresponding encoding, according to the identity of the corresponding decoding. Then there is the encryption, where PBE symmetric encryption is used. The