DES 数据加密标准(英语:Data Encryption Standard,缩写为 DES)是一种对称密钥加密块密码算法,1976年被美国联邦政府的国家标准局确定为联邦资料处理标准(FIPS),随后在国际上广泛流传开来。它基于使用56位密钥的对称算法。这个算法因为包含一些机密设计元素,相对短的密钥长度以及怀疑内含美国国家安全局(NSA)的后门而在开始...
This paper analyzes the development of cryptography and classification, analysis of the DES algorithm implementation principle of the development process and realize the DES algorithm based on Encryption and decryption program design, pointed out the defects in the DES algorithm, for the DES algorithm h...
Data Encryption and Decryption Using By Triple DES Performance Efficiency Analysis of CryptosystemCryptography plays very important role in security of data. Cryptography means to transfer sensitive information across insecure networks like internet so that it cannot be read by anyone except the person ...
Cryptography - PGP Protocol Image & File Cryptography Cryptography - Image Cryptography - File Steganography - Image File Encryption and Decryption Cryptography - Encryption of files Cryptography - Decryption of files Cryptography in IoT IoT security challenges, Threats and Attacks Cryptographic Techniques fo...
Cryptography - Encryption / Decryption This application encrypts or decrypts the data using various cryptographic technics. The following cipher alogrithms are supported AES, DES, Triple DES, Rabbit, RC4. In addition the HMAC(Keyed-hash message authentication codes) supported with the following ...
foreach (var b in bytes) { stringBuilder.Append(b.ToString("x2")); } return stringBuilder.ToString();} DES 可逆对称加密,优点:速度快。缺点:密钥管理不方便,要求共享密钥。特点:不同写法对应的加密值不同。 /// /// DES for encryption and decryption /// public static class DesHelper { //...
一)对称加密(Symmetric Cryptography) 对称加密是最快速、最简单的一种加密方式,加密(encryption)与解密(decryption)用的是同样的**(secret key)。对称加密有很多种算法,由于它效率很高,所以被广泛使用在很多加密协议的核心当中。 对称加密通常使用的是相对较小的**,一般小于256 bit。因为**越大,加密越强,但加密与...
1、编号 本科生应用方向实训DES算法文件加/解密工具DES algorithm file encryption / decryption tool学 生姓 名专 业学 号指 导教 师学 院计算机科学技术学院二一四年七月目录摘要1一 、目的与意义2二、 DES概述3三 、DES算法加解密原理41加密42、子密钥的生成93解密11四、软件界面实现121.主界面122.加密123....
Cryptography curriculum design to achieveDESencryption and decryption functions. 密码学的课程设计实现DES加密解密功能. 互联网 2、 DESalgorithm has been applied to the software and hardware encryption extensively. DES( 数据加密标准)算法被广泛应用于软件加密和硬件加密. ...
DES Encryption Operation Modes►DES in Stream Cipher ModesPHP Implementation of DES - mcryptBlowfish - 8-Byte Block CipherSecret Key Generation and ManagementCipher - Secret Key Encryption and DecryptionIntroduction of RSA AlgorithmRSA Implementation using java.math.BigInteger Class...