com.nimbusds.jose.util

Class ByteUtils

java.lang.Object

com.nimbusds.jose.util.ByteUtils

public class ByteUtils
extends Object

Byte utilities.

Version:

2017-06-01

Author:

Vladimir Dzhuvinov

Constructor Summary

Constructors

Constructor and Description
ByteUtils()

Method Summary

Modifier and Type	Method and Description
static int	bitLength(byte[] byteArray) Returns the byte length of the specified byte array.
static int	bitLength(int byteLength) Returns the bit length of the specified byte length.
static int	byteLength(int bitLength) Returns the byte length of the specified bit length.
static byte[]	concat(byte[]... byteArrays) Concatenates the specified byte arrays.
static int	safeBitLength(byte[] byteArray) Returns the byte length of the specified byte array, preventing integer overflow.
static int	safeBitLength(int byteLength) Returns the bit length of the specified byte length, preventing integer overflow.
static byte[]	subArray(byte[] byteArray, int beginIndex, int length) Returns a portion of the specified byte array.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteUtils

public ByteUtils()

Method Detail

concat

public static byte[] concat(byte[]... byteArrays)

Concatenates the specified byte arrays.

Parameters:

byteArrays - The byte arrays to concatenate, may be null.

Returns:

The resulting byte array.

subArray

public static byte[] subArray(byte[] byteArray,
                              int beginIndex,
                              int length)

Returns a portion of the specified byte array.

Parameters:

byteArray - The byte array. Must not be null.

beginIndex - The beginning index, inclusive. Must be zero or positive.

length - The length. Must be zero or positive.

Returns:

The byte array portion.

bitLength

public static int bitLength(int byteLength)

Returns the bit length of the specified byte length.

Parameters:

byteLength - The byte length.

Returns:

The bit length.

safeBitLength

public static int safeBitLength(int byteLength)
                         throws IntegerOverflowException

Returns the bit length of the specified byte length, preventing integer overflow.

Parameters:

byteLength - The byte length.

Returns:

The bit length.

Throws:

IntegerOverflowException - On a integer overflow.

bitLength

public static int bitLength(byte[] byteArray)

Returns the byte length of the specified byte array.

Parameters:

byteArray - The byte array. May be null.

Returns:

The bite length, zero if the array is null.

safeBitLength

public static int safeBitLength(byte[] byteArray)
                         throws IntegerOverflowException

Returns the byte length of the specified byte array, preventing integer overflow.

Parameters:

byteArray - The byte array. May be null.

Returns:

The bite length, zero if the array is null.

Throws:

IntegerOverflowException - On a integer overflow.

byteLength

public static int byteLength(int bitLength)

Returns the byte length of the specified bit length.

Parameters:

bitLength - The bit length.

Returns:

The byte byte length.