iaik.security.pq.util

Class ByteConversions

java.lang.Object

iaik.security.pq.util.ByteConversions

public class ByteConversions
extends Object

Utility class for ByteConversions for internal use

Constructor Summary

Constructors

Constructor and Description
ByteConversions()

Method Summary

Modifier and Type	Method and Description
byte[]	concatByteArrays(byte[]... bytes)
byte[]	flattenByteArrays(byte[][] arr)
byte[]	getBytesFromLong(long in)
int[]	getIntArrayFromBytes(byte[] bytes, int lengthOfIntInBits) Fetches integers from the provided byte array.
int[]	getIntArrayFromBytes(byte[] bytes, int lengthOfIntInBits, boolean littleEndian) Fetches integers from the provided byte array.
long	getLongFromBytes(byte[] b)
byte[]	intArrayToByteArray(int[] arr)

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteConversions

public ByteConversions()

Method Detail

getIntArrayFromBytes

public int[] getIntArrayFromBytes(byte[] bytes,
                                  int lengthOfIntInBits)

Fetches integers from the provided byte array. The algorithm interprets the source byte array as little endian. For big endian, see getIntArrayFromBytes(byte[], int, boolean).

Parameters:

bytes - the source byte array

lengthOfIntInBits - the length of the integers in bit

Returns:

an array of integers. The array contains bytes.length / (lengthOfIntBits / 8) integers.

Throws:

InvalidParameterException - if the length of bytes does not math with the requested bit length

getIntArrayFromBytes

public int[] getIntArrayFromBytes(byte[] bytes,
                                  int lengthOfIntInBits,
                                  boolean littleEndian)

Fetches integers from the provided byte array.

Parameters:

bytes - the source byte array

lengthOfIntInBits - the length of the integers in bit

littleEndian - iff true, then the algorithm interprets the byte array as little endian. Big endian otherwise.

Returns:

an array of integers. The array contains bytes.length / (lengthOfIntBits / 8) integers.

Throws:

InvalidParameterException - if the length of bytes does not math with the requested bit length

getBytesFromLong

public byte[] getBytesFromLong(long in)

getLongFromBytes

public long getLongFromBytes(byte[] b)

flattenByteArrays

public byte[] flattenByteArrays(byte[][] arr)

concatByteArrays

public byte[] concatByteArrays(byte[]... bytes)

intArrayToByteArray

public byte[] intArrayToByteArray(int[] arr)