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使用先生成一个密码a（数据少），再用自己私钥对a进行非对称加密，
加密后，用对方的公钥对加密后的数据进行非对称加密。生成密文b
然后，用密码a对大文档进行对称加密。生成密文c
把b、c发给对方。
对方收到b、c后，解密。
解密过程正好相反。
将b用自己的私钥解密，再用对方的公钥解密，解出密码d，
再用密码d对c解密。OK
这样可以保证，自己的合法性，只有自己有自己的私钥，
对方，用对方的公钥加密后，只有对方用他的私钥才解得开
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提供了大量源码，DES算法为密码体制中的对称密码体制，又被成为美国数据加密标准DES加密算法特点：分组比较短、密钥太短、密码生命周期短、运算速度较慢-Provides a wealth of source, DES algorithm in symmetric key cryptography system, then known as the United States data encryption standard DES encryption algorithm features: sh
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古典列置换密码。属于古典密码学、对称密钥。本程序有界面。-Classical column replacement password. Belong to classical cryptography, symmetric key. The procedure interface.
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密码学中的高级加密标准（Advanced Encryption Standard，AES），又称Rijndael加密法，是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES，已经被多方分析且广为全世界所使用。经过五年的甄选流程，高级加密标准由美国国家标准与技术研究院 （NIST）于2001年11月26日发布于FIPS PUB 197，并在2002年5月26日成为有效的标准。2006年，高级加密标准已然成为对称密钥加密中最流行的算法之一。-Cryptography Advanced
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ANSI X9.42--金融业务的公开密钥加密：使用离散对数密码术的对称密码协议-ANSI X9.42-- financial services public key encryption: using discrete logarithm cryptography symmetric cryptographic protocols
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DES算法为密码体制中的对称密码体制，又被成为美国数据加密标准，是1972年美国IBM公司研制的对称密码体制加密算法。其密钥长度为56位，明文按64位进行分组，将分组后的明文组和56位的密钥按位替代或交换的方法形成密文组的加密方法。
-DES algorithm in symmetric key cryptography system, also known as the United States Data Encryption Standard, was developed in 197
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AES是一种对称密码算法，在密码学中有重要的意义，这个文件能让你的这个算法有充分的了解里面还有一些重要过程的编码实现，用c语言实现-AES is a symmetric encryption algorithm, cryptography has important significance. This file allows you to fully understand the algorithm and some important processes inside the code to
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In cryptography, the Advanced Encryption Standard (AES) is a symmetric-key encryption standard adopted by the U.S. government. The standard comprises three block ciphers, AES-128, AES-192 and AES-256, adopted from a larger collection originally publi
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DES算法为密码体制中的对称密码体制，又被成为美国数据加密标准，是1972年美国IBM公司研制的对称密码体制加密算法-DES algorithm in symmetric key cryptography system, also known as the United States Data Encryption Standard, was developed in 1972, the United States, IBM' s symmetric cipher encryption a
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Symmetric Key Cryptography-use of Microsoft s CryptoAPI to implement challenge response for Entity Authentication via Symmetric Key Cryptography
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This project presents FPGA implementations of the DES and Triple-DES with improved security against power analysis attacks. The proposed designs use Boolean masking, a previously introduced technique to protect smart card implementations from these
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Wireless Sensor Networks (WSN) are becoming popular day by day,
however one of the main issue in WSN is its limited resources. We
have to look to the resources to create Message Authentication Code
(MAC) keeping in mind the feasibility of techn
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对称密钥加密，实现加密解密算法，对明文消息可以替换其他字符，实现加密过程-Symmetric key cryptography, encryption and decryption algorithms Symmetric key cryptography, encryption and decryption algorithms
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The Data Encryption Standard (DES, /ˌ diː ˌ iː ˈ ɛ s/ or /ˈ dɛ z/) was once a predominant symmetric-key algorithm for the encryption of electronic data. It was highly influential in the advancement of modern cryptograp
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In cryptography, the International Data Encryption Algorithm (IDEA), originally called Improved Proposed Encryption Standard (IPES), is a symmetric-key block cipher designed by James Massey of ETH Zurich and Xuejia Lai and was first described in 1991
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By EldoS Corporation. CryptoBlackbox package of SecureBlackbox is a free collection of components and classes that offer wide range of both basic and sophisticated cryptography functions. This includes:
symmetric and asymmetric (PKI-based) cryptogr
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DES was once a predominant symmetric-key algorithm for the encryption of electronic data. It was highly influential in the advancement of modern cryptography in the academic world.
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this scr ipt is extend bab2.zip. in this section talks about symmetric key in cryptography using mathematical theory such as group, ring, and field. -this scr ipt is extend bab2.zip. in this section talks about symmetric key in cryptography using ma
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DES java code
The Data Encryption Standard (DES, /ˌ diː ˌ iː ˈ ɛ s/ or /ˈ dɛ z/) was once a predominant symmetric-key algorithm for the encryption of electronic data. It was highly influential in the advancement of m
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可以实现任意文件的加密解密。高级加密标准（英语：Advanced Encryption Standard，缩写：AES），在密码学中又称Rijndael加密法，是美国联邦政府采用的一种区块加密标准。这个标准用来替代原先的DES，已经被多方分析且广为全世界所使用。经过五年的甄选流程，高级加密标准由美国国家标准与技术研究院（NIST）于2001年11月26日发布于FIPS PUB 197，并在2002年5月26日成为有效的标准。2006年，高级加密标准已然成为对称密钥加密中最流行的算法之一。(Enc
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