📄 unit1.cpp
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bool_ptext=(byte_ptext>>(7-j%8))&1;
bool_ptext=bool_ptext^c_tmp[0];
bool_crytext[j%8]=bool_ptext;
if(j%8==7)
{
btbyte(&byte_crytext,bool_crytext,8);
}
for(k=0;k<63;k++)
iv[k]=iv[k+1];
iv[63]=bool_ptext;
}
plaintext[i]=byte_crytext;
}
fwrite(plaintext,1,dwCount,fDestination);
}
}
else if(RadioButton7->Checked==true)
{
BOOL c_bool[8];
BYTE c_print;
BOOL c_tmp[64]; //CFB-8模式
BYTE plaintext[64];
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<dwCount;i++)
{
for(k=0;k<64;k++)
c_tmp[k]=iv[k];
en_decrypt(c_tmp,key,'e');
btbit(c_bool,&plaintext[i],8);
xor(c_tmp,c_bool,8);
btbyte(&c_print,c_tmp,8);
for(k=0;k<56;k++)
iv[k]=iv[k+8];
for(k=0;k<8;k++)
iv[56+k]=c_tmp[k];
plaintext[i]=c_print;
}
fwrite(plaintext,1,dwCount,fDestination);
}
Screen->Cursor=crDefault;
}
else if(RadioButton8->Checked==true)
{
BOOL c_bool[64];
BYTE c_print[8];
BOOL c_tmp[64];
BYTE plaintext[64]; //CFB-64模式
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<(dwCount-1)/8+1;i++)
{
for(k=0;k<64;k++)
c_tmp[k]=iv[k];
en_decrypt(c_tmp,key,'e');
btbit(c_bool,&plaintext[8*i],64);
xor(c_tmp,c_bool,64);
btbyte(c_print,c_tmp,64);
for(k=0;k<64;k++)
iv[k]=c_tmp[k];
if(i==(dwCount-1)/8)
{
j=(dwCount%8==0)?8:dwCount%8;
for(k=0;k<j;k++)
plaintext[8*i+k]=c_print[k];
}
else
{
for(k=0;k<8;k++)
plaintext[8*i+k]=c_print[k];
}
}
fwrite(plaintext,1,dwCount,fDestination);
}
Screen->Cursor=crDefault;
}
fclose(fSourse);
fclose(fDestination);
end=GetTickCount();
effic=(end-start)*1.0/1000/all_len;
String tmp=" 加密完成!";
tmp+='\n';
tmp+="运行速度：";
tmp+=FloatToStrF(effic,ffFixed,0,7);
tmp+="sec/byte!";
MessageBox(Handle,tmp.c_str(),"提示：",MB_OK|MB_ICONEXCLAMATION);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Decrypt2Click(TObject *Sender)
{
if(fileopen=="")
{
Application->MessageBoxA("请先设置源文件!","提示：",0);
return;
}
if(filesave=="")
{
Application->MessageBoxA("请先设置目标文件!","提示：",0);
return;
}
DWORD len,len2,i,j,k,pi;
BYTE crypt[8];
DWORD start,end;
DWORD all_len=0;
double effic;
start=GetTickCount();
BOOL key[64];
BOOL iv[64];
iv_keychange(key,iv,Edit3->Text.c_str(),Edit4->Text.c_str());
FILE *fSourse,*fDestination;
fSourse=fopen(fileopen.c_str(),"rb");
fDestination=fopen(filesave.c_str(),"wb");
if(RadioButton5->Checked==true)
{
BOOL text[64];
BOOL iv_tmp[64];
BYTE plaintext[64];
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<dwCount/8;i++)
{
btbit(text,&plaintext[8*i],64);
for(j=0;j<64;j++)
{
iv_tmp[j]=text[j];
}
en_decrypt(text,key,'d');
xor(text,iv,64);
for(j=0;j<64;j++)
{
iv[j]=iv_tmp[j];
}
btbyte(crypt,text,64);
for(j=0;j<8;j++)
plaintext[8*i+j]=crypt[j];
}
if(crypt[7]>=1&&crypt[7]<=7)
k=crypt[7];
else
k=8;
fwrite(plaintext,1,dwCount-k%8,fDestination);
}
Screen->Cursor=crDefault;
}
else if(RadioButton6->Checked==true)
{
BOOL c_tmp[64];
BYTE byte_ptext;
BOOL bool_ptext;
BOOL bool_crytext[8];
BYTE byte_crytext;
BYTE plaintext[64];
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<dwCount;i++)
{
for(j=0;j<8;j++)
{
for(k=0;k<64;k++)
c_tmp[k]=iv[k];
en_decrypt(c_tmp,key,'e');
byte_ptext=plaintext[i];
bool_ptext=(byte_ptext>>(7-j%8))&1;
for(k=0;k<63;k++)
iv[k]=iv[k+1];
iv[63]=bool_ptext;
bool_ptext=bool_ptext^c_tmp[0];
bool_crytext[j%8]=bool_ptext;
if(j%8==7)
{
btbyte(&byte_crytext,bool_crytext,8);
}
}
plaintext[i]=byte_crytext;
}
fwrite(plaintext,1,dwCount,fDestination);
}
Screen->Cursor=crDefault;
}
else if(RadioButton7->Checked==true)
{
BOOL c_bool[8];
BYTE c_print;
BOOL c_tmp[64];
BYTE plaintext[64];
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(&plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<dwCount;i++)
{
for(k=0;k<64;k++)
c_tmp[k]=iv[k];
en_decrypt(c_tmp,key,'e');
btbit(c_bool,&plaintext[i],8);
xor(c_tmp,c_bool,8);
btbyte(&c_print,c_tmp,8);
for(k=0;k<56;k++)
iv[k]=iv[k+8];
for(k=0;k<8;k++)
iv[56+k]=c_bool[k];
plaintext[i]=c_print;
}
fwrite(plaintext,1,dwCount,fDestination);
}
Screen->Cursor=crDefault;
}
else if(RadioButton8->Checked==true)
{
BOOL c_bool[64];
BYTE c_print[8];
BOOL c_tmp[64];
BYTE plaintext[64];
DWORD dwCount;
Screen->Cursor=crHourGlass;
while(feof(fSourse)==0)
{
dwCount=fread(plaintext,1,64,fSourse);
if(dwCount==0)
break;
all_len+=dwCount;
for(i=0;i<(dwCount-1)/8+1;i++)
{
for(k=0;k<64;k++)
c_tmp[k]=iv[k];
en_decrypt(c_tmp,key,'e');
btbit(c_bool,&plaintext[8*i],64);
xor(c_tmp,c_bool,64);
btbyte(c_print,c_tmp,64);
for(k=0;k<64;k++)
iv[k]=c_bool[k];
if(i==(dwCount-1)/8)
{
j=(dwCount%8==0)?8:dwCount%8;
for(k=0;k<j;k++)
plaintext[8*i+k]=c_print[k];
}
else
{
for(k=0;k<8;k++)
plaintext[8*i+k]=c_print[k];
}
}
fwrite(plaintext,1,dwCount,fDestination);
}
Screen->Cursor=crDefault;
}
fclose(fSourse);
fclose(fDestination);
end=GetTickCount();
effic=(end-start)*1.0/1000/all_len;
String tmp=" 解密完成!";
tmp+='\n';
tmp+="运行速度：";
tmp+=FloatToStrF(effic,ffFixed,0,7);
tmp+="sec/byte!";
MessageBox(Handle,tmp.c_str(),"提示：",MB_OK|MB_ICONEXCLAMATION);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Exit1Click(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Exit2Click(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
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