| Code 1: |
package com.masking;
public class MaskDemo {
public static void main(String[] args) {
Mask mask=new Mask();
//String data="dgdsg565656 678TT675-098765AA 7657667,6767RR5565";
String data="CAREMARK MAIL 88866RR 823 5454334DD 22 SS 7859 980 999 ssn-888-22-7227 IL 123449459580 4444-4444-5555-3333 AA 324-78787676556";
System.out.println(data);
System.out.println(mask.maskValue(data));
}
}
|
| Code 2: |
package com.masking;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Mask {
String maskValue(String data) {
int[] a = new int[data.length()];
char[] ch = data.toCharArray();
int k = 0;
int i = 0;
for (i = 0; i < ch.length; i++) {
int temp = i;
if (isSpecialAndDigit(ch[i])) {
int countNumber = 0;
for (int j = i; j < ch.length; j++) {
if (isDigit(ch[j])) {
temp = j;
countNumber = countNumber + 1;
if (countNumber == 8) {
a[k] = i;
k++;
a[k] = j;
k++;
}
} else if (isSpecialChar(ch[j])) {
temp = j;
} else {
temp = j;
break;
}
}
} else {
i = temp;
}
i = temp;
}
String ccPattern = "(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|"
+ "(?:2131|1800|35\\d{3})\\d{11}|(?:4\\d{3}|5[1-5]\\d{2}|6011|7\\d{3})-?\\d{4}-?\\d{4}-?\\d{4}|3[4,7]\\d{13})";
String desc = displayMaskValue(data, a, ch);
if (desc.matches(".*" + ccPattern + ".*")) {
Pattern compile = Pattern.compile(ccPattern);
Matcher matcher = compile.matcher(desc);
matcher.find();
String masked = matcher.group().replaceAll("[0-9]", "X");
desc = desc.replaceAll(ccPattern, masked);
}
return desc;
}
/**
* @param data
* @param a
* @param ch
* @return
*/
private String displayMaskValue(String data, int[] a, char[] ch) {
StringBuffer br = new StringBuffer();
int pointer = 0;
for (int m = 0; m < ch.length; m++) {
if (isSpecialAndDigit(ch[m])) {
for (int j = pointer; j < a.length; j++) {
if (a[j] > 0 && m == a[j]) {
pointer = pointer + 2;
if (a[j + 1] > 0) {
for (int j2 = a[j]; j2 <= a[j + 1]; j2++) {
if (isDigit(data.charAt(j2))) {
br.append('X');
} else {
br.append(data.charAt(j2));
}
}
m = a[j + 1];
break;
}
} else {
br.append(ch[m]);
break;
}
}
} else {
br.append(ch[m]);
}
}
return br.toString();
}
boolean isDigit(char c) {
boolean isDigitAndCharacter = (c >= '0' && c <= '9');
return isDigitAndCharacter;
}
boolean isSpecialChar(char c) {
boolean isSpecial = ((c == '!') || (c == '@') || (c == '#')
|| (c == '$') || (c == '&') || (c == '(') || (c == ')')
|| (c == '\\') || (c == '-') || (c == '`') || (c == '+')
|| (c == ',') || (c == '/') || (c == '"') || (c == ' '));
return isSpecial;
}
boolean isSpecialAndDigit(char ch) {
boolean isDigitAndCharacter = ((ch >= '0' && ch <= '9') || (ch == '!')
|| (ch == '@') || (ch == '#') || (ch == '$') || (ch == '&')
|| (ch == '(') || (ch == ')') || (ch == '\\') || (ch == '-')
|| (ch == '`') || (ch == '+') || (ch == ',') || (ch == '/') || (ch == '"'));
return isDigitAndCharacter;
}
}
|
| OutPut: |
CAREMARK MAIL 88866RR 823 5454334DD 22 SS 7859 980 999 ssn-888-22-7227 IL 123449459580 4444-4444-5555-3333 AA 324-78787676556
CAREMARK MAIL 88866RR XXX XXXXX34DD 22 SS XXXX XXX X99 ssn-XXX-XX-XXX7 IL XXXXXXXX9580 XXXX-XXXX-XXXX-XXXX AA XXX-XXXXX676556
|
I am Kartik Chandra Mandal from Bangalore, India. Working as software engineer in Java technology. Have good knowledge of OWASP and CSRF in security for applications and it's implementation in Java technology.