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FH98ViewOnPlaneSoftware/Src/CH91PayloadSoftware/cMD5Encode.cpp

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2 years ago
#include "StdAfx.h"
#include "cMD5Encode.h"
#include <iostream>
#include <math.h>
// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
const int Md5Encode::kA = 0x67452301;
const int Md5Encode::kB = 0xefcdab89;
const int Md5Encode::kC = 0x98badcfe;
const int Md5Encode::kD = 0x10325476;
const unsigned long long Md5Encode::k_ti_num_integer = 4294967296;
// function: CycleMoveLeft
// @param src_num:Ҫ<><D2AA><EFBFBD>Ƶ<EFBFBD><C6B5><EFBFBD>
// @param bit_num_to_move:Ҫ<>ƶ<EFBFBD><C6B6><EFBFBD>bitλ<74><CEBB>
// @return ѭ<><D1AD><EFBFBD><EFBFBD><EFBFBD>ƺ<EFBFBD><C6BA>Ľ<EFBFBD><C4BD><EFBFBD><EFBFBD><EFBFBD>
UInt32 Md5Encode::CycleMoveLeft(UInt32 src_num, int bit_num_to_move) {
UInt32 src_num1 = src_num;
UInt32 src_num2 = src_num;
if (0 >= bit_num_to_move) {
return src_num;
}
UInt32 num1 = src_num1 << bit_num_to_move;
UInt32 num2 = src_num2 >> (32 - bit_num_to_move);
return ((src_num1 << bit_num_to_move) \
| (src_num2 >> (32 - bit_num_to_move)));
}
// function: FillData
// @param in_data_ptr: Ҫ<><D2AA><EFBFBD>ܵ<EFBFBD><DCB5><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>
// @param data_byte_len: <20><><EFBFBD>ݵ<EFBFBD><DDB5>ֽ<EFBFBD><D6BD><EFBFBD>
// @param out_data_ptr: <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
// return : <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><DDB3><EFBFBD>,<2C><><EFBFBD>ֽ<EFBFBD>Ϊ<EFBFBD><CEAA>λ
UInt32 Md5Encode::FillData(const char *in_data_ptr, int data_byte_len, char** out_data_ptr) {
int bit_num = data_byte_len*BIT_OF_BYTE;
int grop_num = bit_num / BIT_OF_GROUP;
int mod_bit_num = bit_num % BIT_OF_GROUP;
int bit_need_fill = 0;
if (mod_bit_num > (BIT_OF_GROUP - SRC_DATA_LEN)) {
bit_need_fill = (BIT_OF_GROUP - mod_bit_num);
bit_need_fill += (BIT_OF_GROUP - SRC_DATA_LEN);
}
else {
bit_need_fill = (BIT_OF_GROUP - SRC_DATA_LEN) - mod_bit_num; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>BIT_OF_GROUP<55><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD>bit_need_fill<6C><6C><EFBFBD>õ<EFBFBD><C3B5><EFBFBD>0,<2C><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
}
int all_bit = bit_num + bit_need_fill;
if (0 < bit_need_fill) {
*out_data_ptr = new char[all_bit / BIT_OF_BYTE + SRC_DATA_LEN / BIT_OF_BYTE];
memset(*out_data_ptr, 0, all_bit / BIT_OF_BYTE + SRC_DATA_LEN / BIT_OF_BYTE);
// copy data
memcpy(*out_data_ptr, in_data_ptr, data_byte_len);
// fill rest data
unsigned char *tmp = reinterpret_cast<unsigned char *>(*out_data_ptr);
tmp += data_byte_len;
// fill 1 and 0
*tmp = 0x80;
// fill origin data len
unsigned long long * origin_num = (unsigned long long *)((*out_data_ptr) + ((all_bit / BIT_OF_BYTE)));
*origin_num = data_byte_len*BIT_OF_BYTE;
}
return (all_bit / BIT_OF_BYTE + SRC_DATA_LEN / BIT_OF_BYTE);
}
void Md5Encode::RoundF(char *data_BIT_OF_GROUP_ptr, ParamDynamic & param) {
UInt32 *M = reinterpret_cast<UInt32*>(data_BIT_OF_GROUP_ptr);
int s[] = { 7, 12, 17, 22 };
for (int i = 0; i < 16; ++i) {
UInt32 ti = k_ti_num_integer * abs(sin(double(i + 1)));
if (i % 4 == 0) {
FF(param.ua_, param.ub_, param.uc_, param.ud_, M[i], s[i % 4], ti);
}
else if (i % 4 == 1) {
FF(param.ud_, param.ua_, param.ub_, param.uc_, M[i], s[i % 4], ti);
}
else if (i % 4 == 2) {
FF(param.uc_, param.ud_, param.ua_, param.ub_, M[i], s[i % 4], ti);
}
else if (i % 4 == 3) {
FF(param.ub_, param.uc_, param.ud_, param.ua_, M[i], s[i % 4], ti);
}
}
}
void Md5Encode::RoundG(char *data_BIT_OF_GROUP_ptr, ParamDynamic & param) {
UInt32 *M = reinterpret_cast<UInt32*>(data_BIT_OF_GROUP_ptr);
int s[] = { 5, 9, 14, 20 };
for (int i = 0; i < 16; ++i) {
UInt32 ti = k_ti_num_integer * abs(sin(double(i + 1 + 16)));
int index = (i * 5 + 1) % 16;
if (i % 4 == 0) {
GG(param.ua_, param.ub_, param.uc_, param.ud_, M[index], s[i % 4], ti);
}
else if (i % 4 == 1) {
GG(param.ud_, param.ua_, param.ub_, param.uc_, M[index], s[i % 4], ti);
}
else if (i % 4 == 2) {
GG(param.uc_, param.ud_, param.ua_, param.ub_, M[index], s[i % 4], ti);
}
else if (i % 4 == 3) {
GG(param.ub_, param.uc_, param.ud_, param.ua_, M[index], s[i % 4], ti);
}
}
}
void Md5Encode::RoundH(char *data_BIT_OF_GROUP_ptr, ParamDynamic & param) {
UInt32 *M = reinterpret_cast<UInt32*>(data_BIT_OF_GROUP_ptr);
int s[] = { 4, 11, 16, 23 };
for (int i = 0; i < 16; ++i) {
UInt32 ti = k_ti_num_integer * abs(sin(double(i + 1 + 32)));
int index = (i * 3 + 5) % 16;
if (i % 4 == 0) {
HH(param.ua_, param.ub_, param.uc_, param.ud_, M[index], s[i % 4], ti);
}
else if (i % 4 == 1) {
HH(param.ud_, param.ua_, param.ub_, param.uc_, M[index], s[i % 4], ti);
}
else if (i % 4 == 2) {
HH(param.uc_, param.ud_, param.ua_, param.ub_, M[index], s[i % 4], ti);
}
else if (i % 4 == 3) {
HH(param.ub_, param.uc_, param.ud_, param.ua_, M[index], s[i % 4], ti);
}
}
}
void Md5Encode::RoundI(char *data_BIT_OF_GROUP_ptr, ParamDynamic & param) {
UInt32 *M = reinterpret_cast<UInt32*>(data_BIT_OF_GROUP_ptr);
int s[] = { 6, 10, 15, 21 };
for (int i = 0; i < 16; ++i) {
UInt32 ti = k_ti_num_integer * abs(sin(double(i + 1 + 48)));
int index = (i * 7 + 0) % 16;
if (i % 4 == 0) {
II(param.ua_, param.ub_, param.uc_, param.ud_, M[index], s[i % 4], ti);
}
else if (i % 4 == 1) {
II(param.ud_, param.ua_, param.ub_, param.uc_, M[index], s[i % 4], ti);
}
else if (i % 4 == 2) {
II(param.uc_, param.ud_, param.ua_, param.ub_, M[index], s[i % 4], ti);
}
else if (i % 4 == 3) {
II(param.ub_, param.uc_, param.ud_, param.ua_, M[index], s[i % 4], ti);
}
}
}
void Md5Encode::RotationCalculate(char *data_512_ptr, ParamDynamic & param) {
if (NULL == data_512_ptr) {
return;
}
RoundF(data_512_ptr, param);
RoundG(data_512_ptr, param);
RoundH(data_512_ptr, param);
RoundI(data_512_ptr, param);
param.ua_ = param.va_last_ + param.ua_;
param.ub_ = param.vb_last_ + param.ub_;
param.uc_ = param.vc_last_ + param.uc_;
param.ud_ = param.vd_last_ + param.ud_;
param.va_last_ = param.ua_;
param.vb_last_ = param.ub_;
param.vc_last_ = param.uc_;
param.vd_last_ = param.ud_;
}
// ת<><D7AA><EFBFBD><EFBFBD>ʮ<EFBFBD><CAAE><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
std::string Md5Encode::GetHexStr(unsigned int num_str) {
std::string hexstr = "";
char szch[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
unsigned char *tmptr = (unsigned char *)&num_str;
int len = sizeof(num_str);
// С<><D0A1><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӡ
for (int i = 0; i < len; i++){
unsigned char ch = tmptr[i] & 0xF0;
ch = ch >> 4;
hexstr.append(1, szch[ch]);
ch = tmptr[i] & 0x0F;
hexstr.append(1, szch[ch]);
}
return hexstr;
}
// function: Encode
// @param src_info:Ҫ<><D2AA><EFBFBD>ܵ<EFBFBD><DCB5><EFBFBD>Ϣ
// return :<3A><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD>MD5ֵ
std::string Md5Encode::Encode(std::string src_info) {
ParamDynamic param;
param.ua_ = kA;
param.ub_ = kB;
param.uc_ = kC;
param.ud_ = kD;
param.va_last_ = kA;
param.vb_last_ = kB;
param.vc_last_ = kC;
param.vd_last_ = kD;
std::string result;
const char *src_data = src_info.c_str();
char *out_data_ptr = NULL;
int total_byte = FillData(src_data, strlen(src_data), &out_data_ptr);
//char * data_BIT_OF_GROUP = out_data_ptr;
for (int i = 0; i < total_byte / (BIT_OF_GROUP / BIT_OF_BYTE); ++i) {
char * data_BIT_OF_GROUP = out_data_ptr;
data_BIT_OF_GROUP += i*(BIT_OF_GROUP / BIT_OF_BYTE);
RotationCalculate(data_BIT_OF_GROUP, param);
}
if (NULL != out_data_ptr) {
delete[] out_data_ptr, out_data_ptr = NULL;
}
result.append(GetHexStr(param.ua_));
result.append(GetHexStr(param.ub_));
result.append(GetHexStr(param.uc_));
result.append(GetHexStr(param.ud_));
return result;
}