信息安全技术实验报告

1江苏科技大系统交互实验报告姓名：秦魏学号：1440501218院系：计算机科学与工程学院2实验一DES加解密算法实验学时：2学时实验类型：验证实验要求：必修一、实验目的1.学会并实现DES算法2.理解对称密码体制的基本思想3.掌握数据加密和解密的基本过程4.理解公钥密码体制的基本思想5.掌握公钥密码数据加密和解密的基本过程6.理解Hash函数的基本思想7.掌握hash函数软件计算软件/信息的Hash值的基本过程二、实验内容1、根据DES加密标准，用C++设计编写符合DES算法思想的加、解密程序，能够实现对字符串和数组的加密和解密。例如，字符串为M=“信息安全”，密钥K=“computer”2、根据RSA加密算法，使用RSA1软件，能够实现对字符的加密和解密。3、根据MD5算法，使用hashcalc软件和MD5Caculate软件，能够实现求字符串和文件的HASH值。例如，字符串为M=“信息安全”，求其HASH值三、实验结果//DES.cpp:implementationoftheDESclass.////////////////////////////////////////////////////////////////////////#includestdafx.h#includeDESlxp.h#includeDES.h#ifdef_DEBUG3#undefTHIS_FILEstaticcharTHIS_FILE[]=__FILE__;#definenewDEBUG_NEW#endif////////////////////////////////////////////////////////////////////////Construction/Destruction//////////////////////////////////////////////////////////////////////DES::DES(){}DES::~DES(){}4//initialpermutationIPconststaticcharIP_Table[64]={58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6,64,56,48,40,32,24,16,8,57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,61,53,45,37,29,21,13,5,63,55,47,39,31,23,15,7};//finalpermutationIP^-1conststaticcharIPR_Table[64]={40,8,48,16,56,24,64,32,39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,35,3,43,11,51,19,59,27,34,2,42,10,50,18,58,26,33,1,41,9,49,17,57,25};//expansionoperationmatrixstaticconstcharE_Table[48]={32,1,2,3,4,5,4,5,6,7,8,9,8,9,10,11,12,13,12,13,14,15,16,17,16,17,18,19,20,21,20,21,22,23,24,25,24,25,26,27,28,29,28,29,30,31,32,1};//32-bitpermutationfunctionPusedontheoutputoftheS-boxes5conststaticcharP_Table[32]={16,7,20,21,29,12,28,17,1,15,23,26,5,18,31,10,2,8,24,14,32,27,3,9,19,13,30,6,22,11,4,25};//permutedchoicetable(key)conststaticcharPC1_Table[56]={57,49,41,33,25,17,9,1,58,50,42,34,26,18,10,2,59,51,43,35,27,19,11,3,60,52,44,36,63,55,47,39,31,23,15,7,62,54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,28,20,12,4};//permutedchoicekey(table)conststaticcharPC2_Table[48]={14,17,11,24,1,5,3,28,15,6,21,10,23,19,12,4,26,8,16,7,27,20,13,2,41,52,31,37,47,55,30,40,51,45,33,48,44,49,39,56,34,53,46,42,50,36,29,32};//numberleftrotationsofpc1conststaticcharLOOP_Table[16]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1};6//The(in)famousS-boxesconststaticcharS_Box[8][4][16]={//S114,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13,//S215,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9,//S310,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12,//S47,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14,7//S52,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3,//S612,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8,9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6,4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13,//S74,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12,//S813,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2,7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11};8//////////////////////////////////////////////////////////////////////////typedefbool(*PSubKey)[16][48];//////////////////////////////////////////////////////////////////////////staticvoidSDES(charOut[8],charIn[8],constPSubKeypSubKey,boolType);//标准DES加/解密staticvoidSetKey(constchar*Key,intlen);//设置密钥staticvoidSetSubKey(PSubKeypSubKey,constcharKey[8]);//设置子密钥staticvoidF_func(boolIn[32],constboolKi[48]);//f函数staticvoidS_func(boolOut[32],constboolIn[48]);//S盒代替staticvoidTransform(bool*Out,bool*In,constchar*Table,intlen);//变换staticvoidXor(bool*InA,constbool*InB,intlen);//异或staticvoidRotateL(bool*In,intlen,intloop);//循环左移staticvoidByteToBit(bool*Out,constchar*In,intbits);//字节组转换成位组staticvoidBitToByte(char*Out,constbool*In,intbits);//位组转换成9字节组//////////////////////////////////////////////////////////////////////////staticboolSubKey[2][16][48];//16圈子密钥staticboolIs3DES;//3次DES标志staticcharTmp[256],deskey[16];//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////CodestartsfromLine130//////////////////////////////////////////////////////////////////////////voidSetKey(constchar*Key,intlen){memset(deskey,0,16);memcpy(deskey,Key,len16?16:len);10SetSubKey(&SubKey[0],&deskey[0]);Is3DES=len8?(SetSubKey(&SubKey[1],&deskey[8]),true):false;}voidSDES(charOut[8],charIn[8],constPSubKeypSubKey,boolType){staticboolM[64],tmp[32],*Li=&M[0],*Ri=&M[32];ByteToBit(M,In,64);Transform(M,M,IP_Table,64);if(Type==ENCRYPT){for(inti=