package?com;

import?javax.swing.JOptionPane;???
???
public?class?Hill?{???
	
	int?key[][]?=?new?int[2][2];
	String?PText?=?““;
	StringBuffer?CText?=?new?StringBuffer（）;
	
????public?static?void?main（String[]?args）?{???
????	Hill?h?=?new?Hill（）;
????	h.inputKey（）;
????	h.inputPText（）;
????	h.encrypt（）;
????	h.getResult（）;
????}
????
????public?void?inputKey（）?{
????	key[0][0]?=?Integer.parseInt（JOptionPane.showInputDialog（“本程序是以2*2矩陣加密，請(qǐng)輸入矩陣第1行第1列的值“））;
????	key[0][1]?=?Integer.parseInt（JOptionPane.showInputDialog（“本程序是以2*2矩陣加密，請(qǐng)輸入矩陣第1行第2列的值“））;
????	key[1][0]?=?Integer.parseInt（JOptionPane.showInputDialog（“本程序是以2*2矩陣加密，請(qǐng)輸入矩陣第2行第1列的值“））;
????	key[1][1]?=?Integer.parseInt（JOptionPane.showInputDialog（“本程序是以2*2矩陣加密，請(qǐng)輸入矩陣第2行第2列的值“））;
????}
????
????public?void?inputPText（）?{
????	PText?=?JOptionPane.showInputDialog（“請(qǐng)輸入明文“）;
????	PText?=?PText.toUpperCase（）;
????	if（PText.length（）?%?2?!=?0）?{
????		PText?+=?‘X‘;
????	}
????}
????
????public?int[]?charToInt（String?s）?{
????	int[]?i?=?new?int[s.length（）];
????	char?c;
????	for（int?j=0;j????		c?=?s.charAt（j）;
????		i[j]?=?（c?-?‘A‘）?%?26;?
????	}
????	return?i;
????}
????
????public?void?intToChar（int[]?out）?{
????	char?c;
????	for（int?j=0;j????		c?=?（char）?（out[j]?+?‘A‘）;
????		CText.append（c）;
????	}
????}
????
????public?void?encrypt（）?{
????	int[]?in?=?charToInt（PText）;
????	int[]?out?=?new?int[in.length];
????	for（int?i=0;i????		out[i]?=?（key[0][0]?*?in[i]?+?key[0][1]?*?in[i+1]）?%?26;
????		out[i+1]?=?（key[1][0]?*?in[i]?+?key[1][1]?*?in[i+1]）?%?26;
????	}
????	intToChar（out）;
????}
????
????public?void?getResult（）?{
????	System.out.println（“加密矩陣：“）;
????	for（int?i=0;i????		for（int?j=0;j????			if（key[i][j]<10）
????				System.out.print（key[i][j]?+?“??“）;
????			else
????				System.out.print（key[i][j]?+?“?“）;
????		}
????		System.out.println（）;
????	}
????	System.out.println（“\n明文：“）;
????	System.out.println（PText）;
????	System.out.println（“\n密文：“）;
????	System.out.println（CText）;
????}
???
}???

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2013-01-13?11:24??Hill\
?????文件?????????301??2013-01-13?11:24??Hill\.classpath
?????文件?????????380??2013-01-13?11:24??Hill\.project
?????目錄???????????0??2013-01-13?11:24??Hill\.settings\
?????文件?????????629??2013-01-13?11:24??Hill\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2013-01-13?11:24??Hill\bin\
?????目錄???????????0??2013-01-13?11:24??Hill\bin\com\
?????文件????????3161??2013-01-13?14:27??Hill\bin\com\Hill.class
?????目錄???????????0??2013-01-13?11:24??Hill\src\
?????目錄???????????0??2013-01-13?11:24??Hill\src\com\
?????文件????????2252??2013-01-13?14:27??Hill\src\com\Hill.java