| java.lang.Object
 com.sun.midp.crypto.Util
| Util | | public class Util (Code) | | This class defines some static utility methods.
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| Method Summary | |
| public static void | checkBounds(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset)
Verifies that method parameters are correct. | | public static byte[] | cloneArray(byte[] array)
Creates a copy of byte array. | | public static byte[] | cloneSubarray(byte[] array, int offset, int len)
Creates a copy of byte array. | | public static int | getInt(byte[] data, int offset)
Returns 4 bytes from the buffer as integer value. | | static String | hexEncode(byte[] b)
Converts a byte array into a corresponding string of hexadecimal
digits. | | public static byte[] | unpackBytes(String src)
Unpacks data from string representation. | | public static void | xorArrays(byte[] a, byte[] b)
Performs an XOR operation of arrays elements. |
| checkBounds | | public static void checkBounds(byte[] input, int inputOffset, int inputLen, byte[] output, int outputOffset)(Code) | | Verifies that method parameters are correct.
NOTE: This method accepts too big outputOffset values - cipher
methods must throw ShortBufferException if there are output data.
Parameters:
input - the input buffer
Parameters:
inputOffset - the offset in input where the inputstarts
Parameters:
inputLen - the input length
Parameters:
output - the buffer for the result
Parameters:
outputOffset - the offset in output where the resultis stored
throws:
IllegalArgumentException - if parameters are wrong. |
| cloneArray | | public static byte[] cloneArray(byte[] array)(Code) | | Creates a copy of byte array.
Parameters:
array - the byte array to be copied the copy of the array |
| cloneSubarray | | public static byte[] cloneSubarray(byte[] array, int offset, int len)(Code) | | Creates a copy of byte array.
Parameters:
array - the byte array to be copied
Parameters:
offset - where to begin
Parameters:
len - how many bytes to copy the copy of the array |
| getInt | | public static int getInt(byte[] data, int offset)(Code) | | Returns 4 bytes from the buffer as integer value.
Parameters:
data - data array
Parameters:
offset - value offset the value |
| hexEncode | | static String hexEncode(byte[] b)(Code) | | Converts a byte array into a corresponding string of hexadecimal
digits. This is equivalent to hexEncode(b, 0, b.length).
Parameters:
b - byte array to be converted corresponding hexadecimal string |
| unpackBytes | | public static byte[] unpackBytes(String src)(Code) | | Unpacks data from string representation.
Parameters:
src - packed data unpacked data |
| xorArrays | | public static void xorArrays(byte[] a, byte[] b)(Code) | | Performs an XOR operation of arrays elements. Results are placed
into the first array.
Parameters:
a - the first array
Parameters:
b - the second array |
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