opencard.core.util
Class HexString

java.lang.Object
  |
  +--opencard.core.util.HexString
public class HexString
extends java.lang.Object

Small utility class to hexify bytes and shorts.

Field Summary
protected static java.lang.String[] hexChars
          Auxillary string array.
 
Constructor Summary
HexString()
           
 
Method Summary
static java.lang.String dump(byte[] data)
          Hex-dump a byte array (offset and printable ASCII included)
static java.lang.String dump(byte[] data, int offset, int len)
          Hex-dump a byte array (offset and printable ASCII included)
static java.lang.String hexify(byte[] data)
          Hexify a byte array.
static java.lang.String hexify(int val)
          Hexify a byte value.
static java.lang.String hexifyShort(byte a, byte b)
          Hexify short value encoded in two bytes.
static java.lang.String hexifyShort(int val)
          Hexify a short value.
static java.lang.String hexifyShort(int a, int b)
          Hexify short value encoded in two (int-encoded)bytes.
static byte[] parseHexString(java.lang.String byteString)
          Parse bytes encoded as Hexadecimals into a byte array.
static byte[] parseLittleEndianHexString(java.lang.String byteString)
          Parse string of Hexadecimals into a byte array suitable for unsigned BigInteger computations.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

hexChars

protected static final java.lang.String[] hexChars
Auxillary string array.
Constructor Detail

HexString

public HexString()
Method Detail

dump

public static java.lang.String dump(byte[] data)
Hex-dump a byte array (offset and printable ASCII included)

Parameters:
data - Byte array to convert to HexString
Returns:
HexString

dump

public static java.lang.String dump(byte[] data,
                                    int offset,
                                    int len)
Hex-dump a byte array (offset and printable ASCII included)

Parameters:
data - Byte array to convert to HexString
offset - Start dump here
len - Number of bytes to be dumped.
Returns:
HexString

hexify

public static java.lang.String hexify(byte[] data)
Hexify a byte array.

Parameters:
data - Byte array to convert to HexString
Returns:
HexString

hexify

public static java.lang.String hexify(int val)
Hexify a byte value.

Parameters:
val - Byte value to be displayed as a HexString.
Returns:
HexString

hexifyShort

public static java.lang.String hexifyShort(byte a,
                                           byte b)
Hexify short value encoded in two bytes.

Parameters:
a - High byte of short value to be hexified
b - Low byte of short value to be hexified
Returns:
HexString

hexifyShort

public static java.lang.String hexifyShort(int val)
Hexify a short value.

Parameters:
val - Short value to be displayed as a HexString.
Returns:
HexString

hexifyShort

public static java.lang.String hexifyShort(int a,
                                           int b)
Hexify short value encoded in two (int-encoded)bytes.

Parameters:
a - High byte of short value to be hexified
b - Low byte of short value to be hexified
Returns:
HexString

parseHexString

public static byte[] parseHexString(java.lang.String byteString)
Parse bytes encoded as Hexadecimals into a byte array.

Parameters:
byteString - String containing HexBytes.
Returns:
byte array containing the parsed values of the given string.

parseLittleEndianHexString

public static byte[] parseLittleEndianHexString(java.lang.String byteString)
Parse string of Hexadecimals into a byte array suitable for unsigned BigInteger computations. Reverse the order of the parsed data on the fly (input data little endian).

Parameters:
byteString - String containing HexBytes.
Returns:
byte array containing the parsed values of the given string.