bmp、jpg、gif图片隐写

// jpg.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include <atlimage.h> #include <gdiplus.h> #include<direct.h> #include<fstream> #include<iostream> using namespace std; void hide3jpg() { ofstream of("5_2.jpg",ios::app|ios::binary); of<<"welcome to mianyang!"; of.close(); } void hide3jpg1() { long int size=0; HANDLE hfile = CreateFileA("5_2.jpg", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hfile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hfile,NULL); CloseHandle(hfile); } FILE* fid; fopen_s(&fid,"5_2.jpg","rb"); rewind(fid); BYTE *pos = (BYTE*) malloc (sizeof(BYTE)*size); fread(pos,sizeof(BYTE),size,fid); for(int i=0;i<size;i++) { if(pos[i]==255&&pos[i]+1==217)//图片首次FFD9的位置 { if(i==size-2) //FFD9在最后位置 cout<<"图片尾部无隐写"<<endl; else cout<<"图片尾部有隐写"<<endl; break; } } fclose(fid); } void headhidejpg()//头部隐写 { long int size=0; HANDLE hfile = CreateFileA("5_2.jpg", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hfile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hfile,NULL); CloseHandle(hfile); } char *a="welcome to mianyang!"; int len=strlen(a); int biaozhi[4]={255,39,0,(len+2)};//标记ff,46 cout<<len; FILE* fid; FILE* fid1; fopen_s(&fid,"5_2.hidehead.jpg","wb"); fopen_s(&fid1,"5_2.jpg","rb"); rewind(fid1); BYTE *pos = (BYTE*) malloc (sizeof(BYTE)*size); fread(pos,sizeof(BYTE),size,fid1); int b=pos[5]+4;//FFD8后面的第一个FF标记所代表的内容最后一个比特的定位 cout<<b; for(int i=0;i<b;i++) { fwrite(&pos[i],sizeof(BYTE),1,fid);//向新文件写入第一个FF标记内容 } for(int i=0;i<4;i++) { fwrite(&biaozhi[i],sizeof(BYTE),1,fid);//写入标记信息 } for(int i=0;i<len;i++) { fwrite(&a[i],sizeof(char),1,fid);//写入隐藏内容 } for(int i=b;i<size;i++) { fwrite(&pos[i],sizeof(BYTE),1,fid);//写入第一个FF标记之后的内容 } fclose(fid); fclose(fid1); system("pause"); } void headhidejpg1()//头部隐写提取 { long int size=0; HANDLE hfile = CreateFileA("5_2.hidehead.jpg", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hfile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hfile,NULL); CloseHandle(hfile); } FILE* fid; fopen_s(&fid,"5_2.hidehead.jpg","rb"); BYTE *pos = (BYTE*) malloc (sizeof(BYTE)*size); fread(pos,sizeof(BYTE),size,fid); int j,k=0; for(int i=0;i<size;i++) { if(pos[i]==255&&pos[i+1]==70)//标记信息为FF 46 { j=i+3;break; }//j为该字段大小 } cout<<"隐写数据为："<<endl; for(int i=j+1;i<(pos[j]+j)-1;i++)// { cout<<pos[i]; } cout<<endl; fclose(fid); system("pause"); } void midhidejpg()//数据区隐写 { long int size=0; HANDLE hfile = CreateFileA("5_2.jpg", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hfile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hfile,NULL); CloseHandle(hfile); } int biaozhi[4]={109,109}; char *a="mianyang"; int len=strlen(a); FILE* file=NULL; FILE* file1=NULL; fopen_s(&file,"5_2.midhide.jpg","wb"); fopen_s(&file1,"5_2.jpg","rb"); BYTE *pos = (BYTE*) malloc (sizeof(BYTE)*size); rewind(file1); fread(pos,sizeof(BYTE),size,file1); int j=0,k=0,l=0; for(int i=0;i<size;i++) { if(pos[i]==255&&pos[i+1]==218) //sos { j=1,k=pos[i+3]+i+1; k+=8; //数据区第8位 } if(j==1&&i>=k) { fwrite(&biaozhi[0],sizeof(BYTE),1,file); j=2;; } else if(j==2) { fwrite(&biaozhi[1],sizeof(BYTE),1,file);j=3; } else if(j==3) { fwrite(&a[l],sizeof(char),1,file); l++; if(l==len) { j=0; } } else fwrite(&pos[i],sizeof(BYTE),1,file); } fclose(file); fclose(file1); } void midhidejpg1()//数据区隐写提取 { long int size=0; HANDLE hfile = CreateFileA("5_2.jpg", GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, 0); if(hfile!=INVALID_HANDLE_VALUE) { size=GetFileSize(hfile,NULL); CloseHandle(hfile); } FILE* fid; fopen_s(&fid,"5_2.midhide.jpg","rb"); int biaozhi[4]={109,109}; rewind(fid); BYTE *pos = (BYTE*) malloc (sizeof(BYTE)*size); fread(pos,sizeof(BYTE),size,fid); cout<<"隐写数据为："<<endl; int j=0,k=0,size1=0; for(int i=0;i<size;i++) { if(pos[i]==255&&pos[i+1]==218) //FFDA { j=1;k=pos[i+3]+i+1;} if(j==1&&i>=k) { if(pos[i]==109&&pos[i+1]==109)//标记MM j==2;} if(j==2&&size<8) { size1++;cout<<pos[i];} cout<<endl; } fclose(fid); } int _tmain(int argc, _TCHAR* argv[]) { headhidejpg();//头隐写 headhidejpg1(); midhidejpg();//数据隐写 midhidejpg1(); hide3jpg();//尾部隐写 hide3jpg1(); return 0; }