Java String Descrypt decryptMailAdress(String enc, int offset)

Description

decrypt Mail Adress

License

Open Source License

Declaration

private static String decryptMailAdress(String enc, int offset) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    private static String decryptMailAdress(String enc, int offset) {
        String dec = "";
        int len = enc.length();
        for (int i = 0; i < len; i++) {
            char n = enc.charAt(i);
            if (n >= 0x2B && n <= 0x3A) {
                dec += decryptCharcode(n, 0x2B, 0x3A, offset);
            } else if (n >= 0x40 && n <= 0x5A) {
                dec += decryptCharcode(n, 0x40, 0x5A, offset);
            } else if (n >= 0x61 && n <= 0x7A) {
                dec += decryptCharcode(n, 0x61, 0x7A, offset);
            } else {
                dec += enc.charAt(i);//from w  ww  . j  a v  a 2 s  .  c  o m
            }
        }
        return dec;
    }

    private static char decryptCharcode(char c, int start, int end, int offset) {
        int n = (int) c;
        n = n + offset;
        if (offset > 0 && n > end) {
            n = start + (n - end - 1);
        } else if (offset < 0 && n < start) {
            n = end - (start - n - 1);
        }
        return (char) n;
    }
}

Related

1. decryptBytes(final byte[] b, final int i)
2. decryptChar(String pwd, int offset, int pos)
3. decryptCharcode(char c, int start, int end, int offset)
4. decryptEmailId(String encryptedEmailId)
5. decryptL(byte[] bytes, int length)
6. decryptPwd(String enc)