中文文件加密、解密

QByteArrary::toBase64()，QByteArray::fromBase64()函数进行转码和解码进行简单加密、解密

//加密

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1. <span style="font-size:18px;">void encryption(const QString &fileName)  
2. {  
3.     //orginal file  
4.     //QTextCodec::setCodecForCStrings(QTextCodec::codecForName("GB2312"));  
5.     QFile original(fileName);  
6.     if(!orginal.open(QIODevice::ReadOnly)) {  
7.         QMessageBox::warning(0, "Read11",  
8.                              "Read error!",  
9.                              QMessageBox::Yes);  
10.     }  
11.     QByteArray ba = orginal.readAll().toBase64();  
12.   
13.     QFile dest("dest.xx");  
14.     if(!dest.open(QIODevice::WriteOnly)) {  
15.         QMessageBox::warning(0, "Write11",  
16.                              "Write error!",  
17.                              QMessageBox::Yes);  
18.     }  
19.     dest.write(ba);  
20.   
21.     original.close();  
22.     dest.close();  
23. }</span>  

//解密

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1. <span style="font-size:18px;">void Deciphering(const QString &fileName)  
2. {  
3.     QFile file(fileName);  
4.     if(!file.open(QIODevice::ReadOnly)) {  
5.         QMessageBox::warning(this, tr("Load Ds File"),  
6.                              file.errorString(),  
7.                              QMessageBox::Yes);  
8.     }  
9.     //append deciphering contents to textbrowser  
10.     append(QByteArray::fromBase64(file.readAll()));  
11.   
12.     file.close();  
13. }</span>