edu.vt.middleware.crypt.util
Class Convert

java.lang.Object
  edu.vt.middleware.crypt.util.Convert

public final class Convert
extends Object

Utility class provides static methods to perform common conversions.

Version:

$Revision: 3 $

Author:

Middleware Services

Field Summary

static Charset	ASCII_CHARSET ASCII character set used for all encoding methods.
static String	CHARSET_PROPERTY System property used to specify character set.
static Charset	DEFAULT_CHARSET Default character set.

Method Summary

static byte[]	fromBase64(String base64) Converts base64-encoded string of bytes into the original byte array.
static byte[]	fromHex(String hex) Converts hexadecimal string of bytes into the original byte array.
static Charset	getDefaultCharset() Gets the default charset used for character/byte conversions.
static byte[]	toAsciiBytes(String input) Converts a string to bytes in the ASCII character set.
static String	toBase64(byte[] input) Converts a byte array into a base-64 encoded string without any line breaks.
static byte[]	toBytes(char[] input) Converts a character array to a byte array in the default character set.
static byte[]	toBytes(String input) Converts a string to bytes in the default character set.
static byte[]	toBytes(String[] input) Convers an array of strings into a byte array produced by concatenating the byte representation of each string in the default character set.
static String	toHex(byte[] input) Converts a byte array into a hexadecimal string representation of the bytes.
static String	toString(byte[] input) Converts a byte array to a string in the default encoding.

Methods inherited from class java.lang.Object

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

Field Detail

CHARSET_PROPERTY

public static final String CHARSET_PROPERTY

System property used to specify character set.

See Also:

Constant Field Values

ASCII_CHARSET

public static final Charset ASCII_CHARSET

ASCII character set used for all encoding methods.

DEFAULT_CHARSET

public static final Charset DEFAULT_CHARSET

Default character set.

Method Detail

getDefaultCharset

public static Charset getDefaultCharset()

Gets the default charset used for character/byte conversions. If the edu.vt.middleware.crypt.charset system property is specified, attempts to get the named character set, otherwise returns DEFAULT_CHARSET.

Returns:

Default character set.

toBytes

public static byte[] toBytes(String[] input)

Convers an array of strings into a byte array produced by concatenating the byte representation of each string in the default character set.

Parameters:

input - String to convert

Returns:

String characters as bytes.

toBytes

public static byte[] toBytes(String input)

Converts a string to bytes in the default character set.

Parameters:

input - String to convert.

Returns:

String characters as bytes.

toBytes

public static byte[] toBytes(char[] input)

Converts a character array to a byte array in the default character set.

Parameters:

input - Character array to convert.

Returns:

Characters as bytes in the default charset.

toAsciiBytes

public static byte[] toAsciiBytes(String input)

Converts a string to bytes in the ASCII character set.

Parameters:

input - String to convert.

Returns:

Byte array of ASCII characters.

toString

public static String toString(byte[] input)

Converts a byte array to a string in the default encoding.

Parameters:

input - Byte array to convert.

Returns:

String representation of bytes.

fromHex

public static byte[] fromHex(String hex)

Converts hexadecimal string of bytes into the original byte array.

Parameters:

hex - Hexadecimal string of bytes.

Returns:

Original byte array.

toHex

public static String toHex(byte[] input)

Converts a byte array into a hexadecimal string representation of the bytes.

Parameters:

input - Byte array to convert

Returns:

String of hexadecimal characters, two for each byte in input array.

fromBase64

public static byte[] fromBase64(String base64)

Converts base64-encoded string of bytes into the original byte array.

Parameters:

base64 - Base64-encoded string of bytes.

Returns:

Original byte array.

toBase64

public static String toBase64(byte[] input)

Converts a byte array into a base-64 encoded string without any line breaks.

Parameters:

input - Byte array to convert.

Returns:

Base-64 encoded string of input bytes.