/****************************************
* \n 을 <br>로 바꾼다.
* @param String
* @return String 치환된 문자열
*****************************************/
public static String repl(String text) {
if( text == null || text.equals("") ) return "";
StringBuffer sb = new StringBuffer(text);
char ch;
for (int i = 0; i < sb.length(); i++) {
ch = sb.charAt(i);
if (ch == '\r' && sb.charAt(i+1) == '\n' ) {
sb.replace(i,i+2,"<br>");
i += 3;
}
}
return sb.toString();
}
/**
* 특수문자를 변환한다.
* @param String
*/
public static String convertInputValue(String message){
message = message.replace("&", "&").replace("<", "<").replace(">", ">").replace("\"", """)
.replace("'", "'").replace("\\", "/").replace(" ", " ").replace("\n", "<br />");
return message;
}
import java.security.Key;
import java.security.NoSuchAlgorithmException;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
public class DES3Util {
private static Key key = null;
static {
if(key == null) {
// Key 초기화
KeyGenerator keyGenerator;
try {
keyGenerator = KeyGenerator.getInstance("TripleDES");
keyGenerator.init(168);
key = keyGenerator.generateKey();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
}
}
public static String encrypt(String inStr) {
StringBuffer sb = null;
try {
Cipher cipher = Cipher.getInstance("TripleDES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
byte[] plaintext = inStr.getBytes("UTF8");
byte[] ciphertext = cipher.doFinal(plaintext);
sb = new StringBuffer(ciphertext.length * 2);
for(int i = 0; i < ciphertext.length; i++) {
String hex = "0" + Integer.toHexString(0xff & ciphertext[i]);
sb.append(hex.substring(hex.length()-2));
}
}catch(Exception e) {
e.printStackTrace();
}
return sb.toString();
}
public static String decrypt(String inStr) {
String text = null;
try {
byte[] b = new byte[inStr.length()/2];
Cipher cipher = Cipher.getInstance("TripleDES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, key);
for(int i = 0; i < b.length; i++) {
b[i] = (byte)Integer.parseInt(inStr.substring(2*i, 2*i+2), 16);
}
byte[] decryptedText = cipher.doFinal(b);
text = new String(decryptedText,"UTF8");
}catch(Exception e) {
e.printStackTrace();
}
return text;
}
}