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비밀키/나휘동 - Revision history
2026-05-15T07:08:12Z
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imported>Unknown at 05:29, 7 February 2021
2021-02-07T05:29:37Z
<p></p>
<p><b>New page</b></p><div>비밀키를 입력받아서 파일에 있는 내용을 암호화 하는 프로그램<br />
<br />
#include &lt;iostream&gt; <br />
#include &lt;fstream&gt; <br />
using namespace std; <br />
<br />
void main() <br />
{ <br />
char filename[10]; <br />
cout &lt;&lt; "파일 이름 : "; <br />
cin &gt;&gt; filename; <br />
ifstream fin(filename); <br />
ofstream fout("encode.txt"); <br />
<br />
char key; <br />
cout &lt;&lt; "비밀키 : "; <br />
cin &gt;&gt; key; <br />
<br />
cout &lt;&lt; "처리중입니다..."&lt;&lt; endl; <br />
<br />
char ch; <br />
while( !fin.eof() ){ <br />
ch = fin.get(); <br />
ch += key;//암호화 <br />
fout &lt;&lt; ch; <br />
cout &lt;&lt; ch; <br />
} <br />
cout &lt;&lt; endl; <br />
fin.close(); <br />
fout.close(); <br />
} <br />
<br />
#include &lt;iostream&gt; <br />
#include &lt;fstream&gt; <br />
using namespace std; <br />
<br />
void main() <br />
{ <br />
char filename[10]; <br />
cout &lt;&lt; "파일 이름 : "; <br />
cin &gt;&gt; filename; <br />
ifstream fin(filename); <br />
ofstream fout("decode.txt"); <br />
<br />
char key; <br />
cout &lt;&lt; "비밀키 : "; <br />
cin &gt;&gt; key; <br />
<br />
cout &lt;&lt; "처리중입니다..."&lt;&lt; endl; <br />
<br />
char ch; <br />
while( !fin.eof() ){ <br />
ch = fin.get(); <br />
ch -= key;//복호화 <br />
fout &lt;&lt; ch; <br />
cout &lt;&lt; ch; <br />
} <br />
cout &lt;&lt; endl; <br />
fin.close(); <br />
fout.close(); <br />
} <br />
----<br />
[[암호화실습]]<br />
</div>
imported>Unknown