Package org.elasticsearch.common

Class CharArrays

java.lang.Object
org.elasticsearch.common.CharArrays
public final class CharArrays
extends java.lang.Object
Helper class similar to Arrays to handle conversions for Char arrays

  • Method Summary

    Modifier and Type Method Description
    static boolean charsBeginsWith​(java.lang.String prefix, char[] chars)
    Tests if a char[] contains a sequence of characters that match the prefix.
    static boolean constantTimeEquals​(char[] a, char[] b)
    Constant time equality check of char arrays to avoid potential timing attacks.
    static boolean constantTimeEquals​(java.lang.String a, java.lang.String b)
    Constant time equality check of strings to avoid potential timing attacks.
    static byte[] toUtf8Bytes​(char[] chars)
    Encodes the provided char[] to a UTF-8 byte[].
    static char[] utf8BytesToChars​(byte[] utf8Bytes)
    Decodes the provided byte[] to a UTF-8 char[].

    Methods inherited from class java.lang.Object

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

  • Method Details

    • utf8BytesToChars

      public static char[] utf8BytesToChars​(byte[] utf8Bytes)
      Decodes the provided byte[] to a UTF-8 char[]. This is done while avoiding conversions to String. The provided byte[] is not modified by this method, so the caller needs to take care of clearing the value if it is sensitive.

    • toUtf8Bytes

      public static byte[] toUtf8Bytes​(char[] chars)
      Encodes the provided char[] to a UTF-8 byte[]. This is done while avoiding conversions to String. The provided char[] is not modified by this method, so the caller needs to take care of clearing the value if it is sensitive.

    • charsBeginsWith

      public static boolean charsBeginsWith​(java.lang.String prefix, char[] chars)
      Tests if a char[] contains a sequence of characters that match the prefix. This is like String.startsWith(String) but does not require conversion of the char[] to a string.

    • constantTimeEquals

      public static boolean constantTimeEquals​(char[] a, char[] b)
      Constant time equality check of char arrays to avoid potential timing attacks.

    • constantTimeEquals

      public static boolean constantTimeEquals​(java.lang.String a, java.lang.String b)
      Constant time equality check of strings to avoid potential timing attacks.