c++编写的md5&sha512加密代码

#include "md&sha.h" #include <stdio.h> #include <string.h> #include <iostream.h> #include "memory.h" #include <stdlib.h> #define S11 7 //确定rotate的值 #define S12 12 #define S13 17 #define S14 22 #define S21 5 #define S22 9 #define S23 14 #define S24 20 #define S31 4 #define S32 11 #define S33 16 #define S34 23 #define S41 6 #define S42 10 #define S43 15 #define S44 21 static void jiami (UINT32 a[4], unsigned char b[64]); static void bianma (unsigned char *, UINT32 *, unsigned int); static void fenzu (UINT32 *, unsigned char *, unsigned int); static unsigned char padbox[64] = { //定义100000....盒子 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; #define F(x, y, z) (((x) & (y)) | ((~x) & (z))) #define G(x, y, z) (((x) & (z)) | ((y) & (~z))) #define H(x, y, z) ((x) ^ (y) ^ (z)) #define I(x, y, z) ((y) ^ ((x) | (~z))) #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) #define FF(a, b, c, d, x, s, ac) { \ (a) += F ((b), (c), (d)) + (x) + (UINT32)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ } #define GG(a, b, c, d, x, s, ac) { \ (a) += G ((b), (c), (d)) + (x) + (UINT32)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ } #define HH(a, b, c, d, x, s, ac) { \ (a) += H ((b), (c), (d)) + (x) + (UINT32)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ } #define II(a, b, c, d, x, s, ac) { \ (a) += I ((b), (c), (d)) + (x) + (UINT32)(ac); \ (a) = ROTATE_LEFT ((a), (s)); \ (a) += (b); \ } void Int (MD5 *a) { a->wei[0] = a->wei[1] = 0; a->shuju[0] = 0x67452301; a->shuju[1] = 0xefcdab89; a->shuju[2] = 0x98badcfe; a->shuju[3] = 0x10325476; } void gengxin (MD5 *a, unsigned char *input, unsigned int inputlen) { unsigned int i, shengyu, lastlen; shengyu = (unsigned int)((a->wei[0] >> 3) & 0x3F); if ((a->wei[0] += ((UINT32)inputlen << 3))< ((UINT32)inputlen << 3)) a->wei[1]++; a->wei[1] += ((UINT32)inputlen >> 29); lastlen = 64 - shengyu; if (inputlen >= lastlen) { memcpy((unsigned char *)&a->huanchong[shengyu], (unsigned char *)input, lastlen); jiami (a->shuju, a->huanchong); for (i = lastlen; i + 63 < inputlen; i += 64) // 如果明文长度超过64字节，则分n个64来执行 jiami (a->shuju, &input[i]); shengyu = 0; } else i = 0; memcpy((unsigned char *)&a->huanchong[shengyu], (unsigned char *)&input[i], inputlen-i); } void Fjiami (unsigned char jieguo[16], MD5 * a) { unsigned char bits[8]; //明文长度box unsigned int shengyu, padlen; //padlen为padbox长度 bianma (bits, a->wei, 8); //将 shengyu = (unsigned int)((a->wei[0] >> 3) & 0x3f); //将字节变成位，然后mod64 padlen = (shengyu < 56) ? (56 - shengyu) : (120 - shengyu); //需要用 10000...补充的长度 gengxin (a, padbox, padlen); gengxin (a, bits, 8); bianma (jieguo, a->shuju, 16); memset ((unsigned char *)a, 0, sizeof (*a)); } static void jiami (UINT32 shuju[4], unsigned char block[64]) { UINT32 a = shuju[0], b = shuju[1], c = shuju[2], d = shuju[3], M[16]; fenzu (M, block, 64); /* Round 1 */ FF (a, b, c, d, M[ 0], S11, 0xd76aa478); FF (d, a, b, c, M[ 1], S12, 0xe8c7b756); FF (c, d, a, b, M[ 2], S13, 0x242070db); FF (b, c, d, a, M[ 3], S14, 0xc1bdceee); FF (a, b, c, d, M[ 4], S11, 0xf57c0faf); FF (d, a, b, c, M[ 5], S12, 0x4787c62a); FF (c, d, a, b, M[ 6], S13, 0xa8304613); FF (b, c, d, a, M[ 7], S14, 0xfd469501); FF (a, b, c, d, M[ 8], S11, 0x698098d8); FF (d, a, b, c, M[ 9], S12, 0x8b44f7af); FF (c, d, a, b, M[10], S13, 0xffff5bb1); FF (b, c, d, a, M[11], S14, 0x895cd7be); FF (a, b, c, d, M[12], S11, 0x6b901122); FF (d, a, b, c, M[13], S12, 0xfd987193); FF (c, d, a, b, M[14], S13, 0xa679438e); FF (b, c, d, a, M[15], S14, 0x49b40821); /* Round 2 */ GG (a, b, c, d, M[ 1], S21, 0xf61e2562); GG (d, a, b, c, M[ 6], S22, 0xc040b340); GG (c, d, a, b, M[11], S23, 0x265e5a51); GG (b, c, d, a, M[ 0], S24, 0xe9b6c7aa); GG (a, b, c, d, M[ 5], S21, 0xd62f105d); GG (d, a, b, c, M[10], S22, 0x2441453); GG (c, d, a, b, M[15], S23, 0xd8a1e681); GG (b, c, d, a, M[ 4], S24, 0xe7d3fbc8); GG (a, b, c, d, M[ 9], S21, 0x21e1cde6); GG (d, a, b, c, M[14], S22, 0xc33707d6); GG (c, d, a, b, M[ 3], S23, 0xf4d50d87); GG (b, c, d, a, M[ 8], S24, 0x455a14ed); GG (a, b, c, d, M[13], S21, 0xa9e3e905); GG (d, a, b, c, M[ 2], S22, 0xfcefa3f8); GG (c, d, a, b, M[ 7], S23, 0x676f02d9); GG (b, c, d, a, M[12], S24, 0x8d2a4c8a); /* Round 3 */ HH (a, b, c, d, M[ 5], S31, 0xfffa3942); HH (d, a, b, c, M[ 8], S32, 0x8771f681); HH (c, d, a, b, M[11], S33, 0x6d9d6122); HH (b, c, d, a, M[14], S34, 0xfde5380c); HH (a, b, c, d, M[ 1], S31, 0xa4beea44); HH (d, a, b, c, M[ 4], S32, 0x4bdecfa9); HH (c, d, a, b, M[ 7], S33, 0xf6bb4b60); HH (b, c, d, a, M[10], S34, 0xbebfbc70); HH (a, b, c, d, M[13], S31, 0x289b7ec6); HH (d, a, b, c, M[ 0], S32, 0xeaa127fa); HH (c, d, a, b, M[ 3], S33, 0xd4ef3085); HH (b, c, d, a, M[ 6], S34, 0x4881d05); HH (a, b, c, d, M[ 9], S31, 0xd9d4d039); HH (d, a, b, c, M[12], S32, 0xe6db99e5); HH (c, d, a, b, M[15], S33, 0x1fa27cf8); HH (b, c, d, a, M[ 2], S34, 0xc4ac5665); /* Round 4 */ II (a, b, c, d, M[ 0], S41, 0xf4292244); II (d, a, b, c, M[ 7], S42, 0x432aff97); II (c, d, a, b, M[14], S43, 0xab9423a7); II (b, c, d, a, M[ 5], S44, 0xfc93a039); II (a, b, c, d, M[12], S41, 0x655b59c3); II (d, a, b, c, M[ 3], S42, 0x8f0ccc92); II (c, d, a, b, M[10], S43, 0xffeff47d); II (b, c, d, a, M[ 1], S44, 0x85845dd1); II (a, b, c, d, M[ 8], S41, 0x6fa87e4f); II (d, a, b, c, M[15], S42, 0xfe2ce6e0); II (c, d, a, b, M[ 6], S43, 0xa3014314); II (b, c, d, a, M[13], S44, 0x4e0811a1); II (a, b, c, d, M[ 4], S41, 0xf7537e82); II (d, a, b, c, M[11], S42, 0xbd3af235); II (c, d, a, b, M[ 2], S43, 0x2ad7d2bb); II (b, c, d, a, M[ 9], S44, 0xeb86d391); shuju[0] += a; shuju[1] += b; shuju[2] += c; shuju[3] += d; memset ((unsigned char *)M, 0, sizeof (M)); //初始化指针 } static void bianma (unsigned char *output, UINT32 *input, unsigned int size) //将Uint4的4个字节一个个体拆分为4个字节的个体 { unsigned int i, j; for (i = 0, j = 0; j < size; i++, j += 4) { output[j] = (unsigned char)(input[i] & 0xff); output[j+1] = (unsigned char)((input[i] >> 8) & 0xff); output[j+2] = (unsigned char)((input[i] >> 16) & 0xff); output[j+3] = (unsigned char)((input[i] >> 24) & 0xff); } } static void fenzu (UINT32 *output, unsigned char *input, unsigned int size) //将输入的内容分组成M0-M15，16个组 { unsigned int i, j; for (i = 0, j = 0; j < size; i++, j += 4) output[i] = ((UINT32)input[j]) | (((UINT32)input[j+1]) << 8) | (((UINT32)input[j+2]) << 16) | (((UINT32)input[j+3]) << 24); } void main () { while(1) { int q; printf("请输入模式(1.md5 2.sha-512 3.exit)"); cin>>q; if(q==1) { char tmp[128]; unsigned char jieguo[16]; printf("请输入需要加密的内容:"); MD5 a; scanf("%s",tmp); Int (&a); gengxin (&a, (unsigned char*)tmp, strlen(tmp)); Fjiami (jieguo,&a); printf("加密后为:"); for(int i=0; i<16; ++i) { printf("%02X",jieguo[i]); } printf("\n"); } if(q==2) { unsigned char buf[128]; SHA512 s; s.sha_output(buf); cout<<endl; } if(q==3) exit(0); } }