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加密作业,实现简单的DES加密,完全实现DES加密的工作流程-encryption operations, the simple DES encryption, completely DES encryption workflow

一种Base 64的编码方法-a Base 64 encoding methods

一解码程序，挺好的东东，不过是用汇编写的，希望能对大家有所帮助。其中还有一个是hcs系列芯片的接收程序。-a decoding procedure very well, the Eastern, but is the compilation was made in the hope that it can be helpful to everyone. Among them were a series of chips is hcs reception procedures.

pkcs#11 header files

用vb实现的文本加密算法-used to achieve the text encryption algorithm

sha-1算法是目前常用的数字摘要算法，可以为任意长度的数据生成20字节的数字摘要，是数字签名的基础-sha-1 algorithm is commonly used in digital digest algorithm, for arbitrary length of 20 bytes of data generation digital summary is the basis of digital signatures

AES encoding/decoding

网络新手学习的好教程-Network novice to learn a good tutorial

设f(x)=1+x+x2+x5+x27，试分别写出实现下列移位寄存器的程序： 以f(x)为联接多项式的DSR； 以f(x)为联接多项式的LFSR。 可供选择的联接多项式： f1(x)=1+x+x4+x6+x30； f2(x)=1+ x3+ x31； f3(x)=1+ x6+ x31； f4(x)=1+ x7+ x31； f5(x)=1+ x13+ x31； -Let f (x) = 1 x x2 x5 x27, respectively try to write the following Shift Register : f (x) connected to the DSR polynomial; f (x) for connectivity polynomial LFSR. Connection options polynomial : f (x) = 1 x x4 x6 x30; F2 (x) = 1 x3 x31; f3 (x) = 1 x6 x31; f4 (x) = 1 x11 x31; f5 (x) = 1 x13 x31;

Introduction to Cryptography in plain simple english. The document talks about the early day cryptography and gives some simple examples to the readers.