對已經加密的私密檔案進行解密
//選擇解密檔案
private
void
button1_click(
object
sender,
eventargs
e)else}}
//解密
private
void
button3_click(
object
sender,
eventargs
e)}}
#region
定義全域性變數及類物件
private
string
strfile = "";
private
string
strnewfile = "";
private
string
strpwd = "";
private
progressbar
pbar =
null;
private
thread
ethread =
null;
private
thread
dthread =
null;
#endregion //
檔案解密
private
void
mydthread();} if
(strpwd.length == 7) ; }
if(strpwd.length >= 8) ;}
fstream =
newfilestream
(strfile,
filemode
.open,
fileaccess
.read);
strnewfile = strfile.substring(0, strfile.length - 3);
newfstream =
newfilestream
(strnewfile,
filemode
.openorcreate,
fileaccess
.write);
newfstream.setlength((
long
)0);
byte
buffer =
newbyte
[0x400];
intminnum = 0;
long
length = fstream.length; pbar.maximum = maxnum;
intmaxnum = (
int)(length / ((
long
)0x400));
desmydes =
newdescryptoserviceprovider
();
cstream =
newcryptostream
(newfstream, mydes.createdecryptor(btrkey, btrkey),
cryptostreammode
.write);
while
(minnum < length) }
catch
{}}
messagebox
.show(
"檔案解密成功！", "
資訊提示"
, messageboxbuttons
.ok, }
catch
} finally
} //
執行解密執行緒
public
void
startdncrypt()
C 檔案簡單加解密
include include includevoid encfile char in filename,char pwd,char out filename 對檔案進行加密的具體函式 void decryptfile char in filename,char pwd,char out filen...
C語言（檔案加解密）
在c語言，檔案主要分為文字檔案和二進位制檔案，因此主要是對這兩種檔案進行加解密。原檔案 加密對每乙個字元進行 異或運算 規則 1 1 0,0 0 0,1 0 1,0 1 1 同為0，不同為1 void crpypt char file path,char crpypt path 關閉 fclose ...
檔案加解密 解密版
include stdafx.h include des.h define crt secure no warnings include include include pragma warning disable 4996 int filesymenc const char pfile1,cons...