com.dalsemi.onewire.utils
Class SHA

java.lang.Object
  |
  +--com.dalsemi.onewire.utils.SHA

public class SHA

extends Object

Utility methods for performing SHA calculations.

Method Summary

static byte[]	ComputeSHA(byte[] MT, byte[] result, int offset) Does Dallas SHA, as specified in DS1963S datasheet.
static void	ComputeSHA(byte[] MT, int[] ABCDE) Does Dallas SHA, as specified in DS1963S datasheet.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

ComputeSHA

public static final byte[] ComputeSHA(byte[] MT,
                                      byte[] result,
                                      int offset)

Does Dallas SHA, as specified in DS1963S datasheet. result is in intel Endian format, starting with the LSB of E to the MSB of E followed by the LSB of D. result array should be at least 20 bytes long, after the offset.

Parameters:

MT - The message block (padded if necessary).

result - The byte[] into which the result will be copied.

offset - The starting location in 'result' to start copying.

ComputeSHA

public static final void ComputeSHA(byte[] MT,
                                    int[] ABCDE)

Does Dallas SHA, as specified in DS1963S datasheet. result is in intel Endian format, starting with the LSB of E to the MSB of E followed by the LSB of D.

Parameters:

MT - The message block (padded if necessary).

ABCDE - The result will be copied into this 5-int array.