Class Base64

java.lang.Object
org.glassfish.jersey.oauth1.signature.Base64
public class Base64 extends Object
Base64 encoding util class.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private static final char[]
    ALPHABET
     
    private static int[]
    valueDecoding
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Base64()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static byte[]
    decode(String encoded)
    Converts a Base64 encoded string to a byte array.
    static byte[]
    decode(String encoded, int offset, int length)
    Converts an embedded Base64 encoded string to a byte array.
    private static void
    decodeQuantum(char in1, char in2, char in3, char in4, byte[] out, int outOffset)
    Decode 4 Base64 chars as 1, 2, or 3 bytes of data.
    static String
    encode(byte[] data)
    Converts a byte array into a Base64 encoded string.
    static String
    encode(byte[] data, int offset, int length)
    Converts a byte array into a Base64 encoded string.
    private static void
    encodeQuantum(byte[] in, int inOffset, int len, char[] out, int outOffset)
    Encodes 1, 2, or 3 bytes of data as 4 Base64 chars.

    Methods inherited from class Object

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

  • Field Details

    • ALPHABET

      private static final char[] ALPHABET

    • valueDecoding

      private static int[] valueDecoding

  • Constructor Details

    • Base64

      public Base64()

  • Method Details

    • encode

      public static String encode(byte[] data)
      Converts a byte array into a Base64 encoded string.
      Parameters:
      data - bytes to encode.
      Returns:
      base64 encoding of data; 4 chars for every 3 bytes.

    • encode

      public static String encode(byte[] data, int offset, int length)
      Converts a byte array into a Base64 encoded string.
      Parameters:
      data - bytes to encode.
      offset - which byte to start at.
      length - how many bytes to encode; padding will be added if needed.
      Returns:
      base64 encoding of data; 4 chars for every 3 bytes.

    • encodeQuantum

      private static void encodeQuantum(byte[] in, int inOffset, int len, char[] out, int outOffset)
      Encodes 1, 2, or 3 bytes of data as 4 Base64 chars.
      Parameters:
      in - buffer of bytes to encode.
      inOffset - where the first byte to encode is.
      len - how many bytes to encode.
      out - buffer to put the output in.
      outOffset - where in the output buffer to put the chars.

    • decode

      public static byte[] decode(String encoded) throws IOException
      Converts a Base64 encoded string to a byte array.
      Parameters:
      encoded - Base64 encoded data.
      Returns:
      decode binary data; 3 bytes for every 4 chars - minus padding.
      Throws:
      IOException - if an I/O error occurs reading the data.

    • decode

      public static byte[] decode(String encoded, int offset, int length) throws IOException
      Converts an embedded Base64 encoded string to a byte array.
      Parameters:
      encoded - a String with Base64 data embedded in it.
      offset - which char of the String to start at.
      length - how many chars to decode; must be a multiple of 4.
      Returns:
      decode binary data; 3 bytes for every 4 chars - minus padding.
      Throws:
      IOException - if an I/O error occurs reading the data.

    • decodeQuantum

      private static void decodeQuantum(char in1, char in2, char in3, char in4, byte[] out, int outOffset) throws IOException
      Decode 4 Base64 chars as 1, 2, or 3 bytes of data.
      Parameters:
      in1 - first char of quantum to decode.
      in2 - second char of quantum to decode.
      in3 - third char of quantum to decode.
      in4 - forth char of quantum to decode.
      out - buffer to put the output in.
      outOffset - where in the output buffer to put the bytes.
      Throws:
      IOException