Class UTF8Converter

java.lang.Object
org.mozilla.jss.util.UTF8Converter

public class UTF8Converter extends Object
Class for converting between char arrays and byte arrays. The conversion is guaranteed (in optimized mode only) not to leave any data hanging around in memory unless there is a catastrophic VM error, which is useful for encoding passwords.
  • Constructor Summary

    Constructors
    Constructor
    Description
     
  • Method Summary

    Modifier and Type
    Method
    Description
    static void
    main(String[] args)
    Testing method
    static byte[]
    UnicodeToUTF8(char[] unicode)
    Creates a new UTF8-encoded byte array representing the char[] passed in.
    protected static byte[]
    UnicodeToUTF8(char[] unicode, boolean nullTerminate)
    Do the work of the above functions.
    static byte[]
    UnicodeToUTF8NullTerm(char[] unicode)
    Creates a new null-terminated UTF8-encoded byte array representing the char[] passed in.
    static void
    wipeBytes(byte[] array)
    Wipes a byte array by setting all of its bytes to zero.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Constructor Details

    • UTF8Converter

      public UTF8Converter()
  • Method Details

    • UnicodeToUTF8

      public static byte[] UnicodeToUTF8(char[] unicode) throws CharConversionException
      Creates a new UTF8-encoded byte array representing the char[] passed in. The output array will NOT be null-terminated.

      This call is safe for passwords; all internal buffers are cleared. The output array is the owned by the caller, who has responsibility for clearing it.

      See http://www.stonehard.com/unicode/standard/ for the UTF-16 and UTF-8 standards.

      Parameters:
      unicode - An array of Unicode characters, which may have UCS4 characters encoded in UTF-16. This array must not be null.
      Throws:
      CharConversionException - If the input characters are invalid.
    • UnicodeToUTF8NullTerm

      public static byte[] UnicodeToUTF8NullTerm(char[] unicode) throws CharConversionException
      Creates a new null-terminated UTF8-encoded byte array representing the char[] passed in.

      This call is safe for passwords; all internal buffers are cleared. The output array is the owned by the caller, who has responsibility for clearing it.

      See http://www.stonehard.com/unicode/standard/ for the UTF-16 and UTF-8 standards.

      Parameters:
      unicode - An array of Unicode characters, which may have UCS4 characters encoded in UTF-16. This array must not be null.
      Throws:
      CharConversionException - If the input characters are invalid.
    • UnicodeToUTF8

      protected static byte[] UnicodeToUTF8(char[] unicode, boolean nullTerminate) throws CharConversionException
      Do the work of the above functions.
      Throws:
      CharConversionException
    • wipeBytes

      public static void wipeBytes(byte[] array)
      Wipes a byte array by setting all of its bytes to zero.
      Parameters:
      array - The input array must not be null.
    • main

      public static void main(String[] args)
      Testing method