c语言实现dES加密算法 c语言实现加密解密 在密码学中,微型加密算法(Tiny Encryption Algorithm,TEA)是一种易于描述和执行的块密码,通常只需要很少的代码就可实现。其设计者是剑桥大学计算机实验室的大卫·惠勒与罗杰·尼达姆。这项技术最初于1994年提交给鲁汶的快速软件加密的研讨会上,并在该研讨会上演讲中首次发表。
/* C code only in portable version */ // Richard Outerbridge's initial permutation algorithm /* inline void IPERM(word32 &left, word32 &right) { word32 work; work = ((left >> 4) ^ right) & 0x0f0f0f0f; right ^= work; left ^= work << 4; work = ((left >>...
Implementation of Improved DES Algorithm in Securing Smart Card Data. In: Computer Applications for Software Engineering, Disaster Recovery and Business Continuity, Communications in Computer and Information Science, Kim, T., C. Ramos, H. Kim, A. Kiumi and S. Mohammed et al. (Eds.), Springer...
DES加密的C语言实现 目录 摘要3 Abstract3 关键词3 1.算法描述4 1.1加/解密算法的一般原理4 1.2加/解密机制的应用5 2.S盒设计5 3.DES程序实例与分析6 4.DES实例运行结果16 5.结语17 6.参考文献17 DES加密的C语言实现 C language achieve DES algorithm 摘要 DES算法是一种数据加密算法,自从1977年公布以来...
deskey =newSecretKeySpec(bytesKey, Algorithm); bytes = Base64.decodeBase64(value);//加密后的字串 desCipher.init(Cipher.DECRYPT_MODE, deskey);//初始化密码器,用密钥deskey,进入解密模式 bytesCipher = desCipher.doFinal(bytes); return(newString(bytesCipher,"UTF-8")); ...
The DES Encryption Algorithm in Information Security LI Lian (Software College, Northwestern Polytechnical University, Xi ′an, 710072, China) Abstract:Moderm encryption algorithm has two types as the different of key:one is the sy mmetrical encryption system;the other is the public key encryption ...
DES.candDES.hcontain the functions used in the DES algorithm. main.cbuilds the algorithm and allows you to encrypt/decrypt an input file. Use make to build desbox. $ make $ desbox --help genkey.cis a key generator that prevents weak keys. Use it if you don't have any key to use...
and gpuDESgpu) performs all steps in the encryption process on the GPU while another (gpuAEScpu and gpuDEScpu) performs all steps except key scheduling on the GPU. The difference in placement of the key scheduling algorithm is due to the non-parallel nature of the key scheduling. ...
# # This is a pure python implementation of the DES encryption algorithm.# It's pure python to avoid portability issues, since most DES # implementations are programmed in C (for performance reasons).# # Triple DES class is also implemented, utilising the DES base. Triple DES # is either ...
Manager Manager-Komponente in Engine Wenn beide DiensteIN_SERVICEsind, gilt dieser Knoten als Meisterschaft. Dies ist ein Ausschnitt aus den Protokollen, in denen der Algorithmus verwendet wird, um das Szenario zu erklären: In diesem Szenario wurde Knoten 1 vor e...