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Hex.javaAPI DocAzureus 3.0.3.41898Tue Jun 08 05:13:00 BST 2004org.bouncycastle.util.encoders

Hex

public class Hex extends Object
Converters for going from hex to binary and back.

Note: this class assumes ASCII processing.

Fields Summary
private static HexTranslator
encoder
private static final byte[]
hexTable
Constructors Summary
Methods Summary
public static byte[]decode(java.lang.String string)

        byte[]          bytes = new byte[string.length() / 2];
        String          buf = string.toLowerCase();
		
        for (int i = 0; i < buf.length(); i += 2)
        {
			char    left  = buf.charAt(i);
			char    right = buf.charAt(i+1);
            int     index = i / 2;
			
            if (left < 'a")
            {
                bytes[index] = (byte)((left - '0") << 4);
            }
            else
            {
                bytes[index] = (byte)((left - 'a" + 10) << 4);
            }
            if (right < 'a")
            {
                bytes[index] += (byte)(right - '0");
            }
            else
            {
                bytes[index] += (byte)(right - 'a" + 10);
            }
        }

        return bytes;
public static byte[]decode(byte[] array)

        byte[]          bytes = new byte[array.length / 2];

        encoder.decode(array, 0, array.length, bytes, 0);

        return bytes;
public static byte[]encode(byte[] array)


       
          
    
        return encode(array, 0, array.length);
public static byte[]encode(byte[] array, int off, int length)

        byte[]      enc = new byte[length * 2];

        encoder.encode(array, off, length, enc, 0);

        return enc;