jsp decrypt encrypted js

Posted on 2009-06-30 filed under: AJAX (RSS) 117 views   

I have been asked in recent js encryption decryption jsp, I access the relevant information, not found jsp directly js encryption decryption methods, but I have the code below to resolve this issue:

/ **
* Here is the address bar jsp and js Chinese encryption and decryption parameters
* /
public class Escape (
private final static String [] hex = (
"00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "0A", "0B", "0C "," 0D "," 0E "," 0F ",
"10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B", "1C "," 1D "," 1E "," 1F ",
"20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "2A", "2B", "2C "," 2D "," 2E "," 2F ",
"30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C "," 3D "," 3E "," 3F ",
"40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "4A", "4B", "4C "," 4D "," 4E "," 4F ",
"50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C "," 5D "," 5E "," 5F ",
"60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "6A", "6B", "6C "," 6D "," 6E "," 6F ",
"70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "7A", "7B", "7C "," 7D "," 7E "," 7F ",
"80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "8A", "8B", "8C "," 8D "," 8E "," 8F ",
"90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "9A", "9B", "9C "," 9D "," 9E "," 9F ",
"A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA", "AB", "AC "," AD "," AE "," AF ",
"B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", "B8", "B9", "BA", "BB", "BC "," BD "," BE "," BF ",
"C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB", "CC "," CD "," CE "," CF ",
"D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", "D8", "D9", "DA", "DB", "DC "," DD "," DE "," DF ",
"E0", "E1", "E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC "," ED "," EE "," EF ",
"F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "FA", "FB", "FC "," FD "," FE "," FF "
);
private final static byte [] val = (
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F
);
public static String escape (String s) (
StringBuffer sbuf = new StringBuffer ();
int len = s.length ();
for (int i = 0; i <len; i + +) (
int ch = s.charAt (i);
if (ch == '') (/ / space: map to '+'
sbuf.append ('+');
) Else if ( 'A' <= ch & & ch <= 'Z') (/ / 'A' .. 'Z': as it was
sbuf.append ((char) ch);
) Else if ( 'a' <= ch & & ch <= 'z') (/ / 'a' .. 'z': as it was
sbuf.append ((char) ch);
) Else if ('0 '<= ch & & ch <='9') (/ /'0 '..'9': as it was
sbuf.append ((char) ch);
) Else if (ch == '-' | | ch == '_' / / unreserved: as it was
| | Ch == '.' | | Ch == '!'
| | Ch == '~' | | ch == '*'
| | Ch == '\''| | ch ==' ( '
| | Ch == ')') (
sbuf.append ((char) ch);
) Else if (ch <= 0x007F) (/ / other ASCII: map to% XX
sbuf.append ('%');
sbuf.append (hex [ch]);
) Else (/ / unicode: map to% uXXXX
sbuf.append ('%');
sbuf.append ( 'u');
sbuf.append (hex [(ch >>>]);
sbuf.append (hex [(0x00FF & ch)]);
)
)
return sbuf.toString ();
)
public static String unescape (String s) (
StringBuffer sbuf = new StringBuffer ();
int i = 0;
int len = s.length ();
while (i <len) (
int ch = s.charAt (i);
if (ch == '+') (/ / +: map to ''
sbuf.append ( '');
) Else if ( 'A' <= ch & & ch <= 'Z') (/ / 'A' .. 'Z': as it was
sbuf.append ((char) ch);
) Else if ( 'a' <= ch & & ch <= 'z') (/ / 'a' .. 'z': as it was
sbuf.append ((char) ch);
) Else if ('0 '<= ch & & ch <='9') (/ /'0 '..'9': as it was
sbuf.append ((char) ch);
) Else if (ch == '-' | | ch == '_' / / unreserved: as it was
| | Ch == '.' | | Ch == '!'
| | Ch == '~' | | ch == '*'
| | Ch == '\''| | ch ==' ( '
| | Ch == ')') (
sbuf.append ((char) ch);
) Else if (ch == '%') (
int cint = 0;
if ( 'u'! = s.charAt (i +1)) (
cint = (cint <<4) | val [s.charAt (i +1)];
cint = (cint <<4) | val [s.charAt (i +2)];
i + = 2;
) Else (
cint = (cint <<4) | val [s.charAt (i +2)];
cint = (cint <<4) | val [s.charAt (i +3)];
cint = (cint <<4) | val [s.charAt (i +4)];
cint = (cint <<4) | val [s.charAt (i +5)];
i + = 5;
)
sbuf.append ((char) cint);
)
i + +;
)
return sbuf.toString ();
)
public static void main (String [] args) (
String stest = "Chinese 1234 abcd []()<+>,.~ \ \";
System.out.println (stest);
System.out.println (escape (stest));
System.out.println (unescape (escape (stest)));
)
)

Js should be so in writing in :........ sendRequest ( "sites.jsp? Name =" + escape (escape ( "Chinese ajax request on behalf of ")));// sites.jsp? Name = Chinese, specific code I can not write here .......

Jsp should be so in writing in :.....<% String name = Escape.unescape (request.getParameter ( "name "));// taken from Chinese Chuan-ajax, if there is no Chinese can not be encrypted%> .. ... deal with the request to return the next value, which I do not have to say it, you can do the specific needs of your ......

Tags: parameters (RSS), jsp (RSS), quot quot (RSS), hex (RSS), encryption and decryption (RSS), static string (RSS), 2c (RSS), decryption methods (RSS), 5f (RSS), quot 15 (RSS), decrypt (RSS), 5b (RSS), 5d (RSS), 5c (RSS), encrypted (RSS), 1a (RSS)

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