View source for 개인키,공개키/박진영,김수진,나휘동

개인키 : 70, 공개키 : 186
 #include &lt;iostream&gt;
 #include &lt;fstream&gt;
 using namespace std;
 int main()
 {
 	ifstream fin("source.txt");
 	ofstream fout("source_enc.txt");
 
 	int key = 70;
 	char ch;
 	int result, result1;
 	while(fin.eof() != true)
 	{
 		fin &gt;&gt;ch;
 		result = int(ch) + key;
 		result1 = result%255;
 		fout &lt;&lt;char(result1);
 	}
 
 	return 0;
 
 }
 
 
 
 
 
 #include &lt;iostream&gt;
 #include &lt;fstream&gt;
 using namespace std;
 int main()
 {
 	ifstream fin("source_enc.txt");
 	ofstream fout("source1.txt");
     int key1;
 	cin &gt;&gt; key1;
     int key = 256-key1;
 	char ch;
 	int result;
 	while(fin.eof() != true)
 	{
 		fin &gt;&gt;ch;
 		result = int(ch) - key;
 	if (result&gt;=0 &amp;&amp; result&lt;=184)
 		fout &lt;&lt;char(result);
 	else   
 	    fout &lt;&lt;char(result+255);
 	}
 
 	return 0;
 }
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