Package org.bouncycastle.util.encoders

Class Base64Encoder

java.lang.Object
org.bouncycastle.util.encoders.Base64Encoder
All Implemented Interfaces:
Encoder
Direct Known Subclasses:
UrlBase64Encoder
public class Base64Encoder extends Object implements Encoder
A streaming Base64 encoder.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected final byte[]
    decodingTable
     
    protected final byte[]
    encodingTable
     
    protected byte
    padding
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    Base64Encoder()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    decode(byte[] data, int off, int length, OutputStream out)
    decode the base 64 encoded byte data writing it to the given output stream, whitespace characters will be ignored.
    int
    decode(String data, OutputStream out)
    decode the base 64 encoded String data writing it to the given output stream, whitespace characters will be ignored.
    int
    encode(byte[] inBuf, int inOff, int inLen, byte[] outBuf, int outOff)
     
    int
    encode(byte[] buf, int off, int len, OutputStream out)
    encode the input data producing a base 64 output stream.
    int
    getEncodedLength(int inputLength)
    Return the expected output length of the encoding.
    int
    getMaxDecodedLength(int inputLength)
    Return the maximum expected output length of a decoding.
    protected void
    initialiseDecodingTable()
     

    Methods inherited from class java.lang.Object

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

  • Field Details

    • encodingTable

      protected final byte[] encodingTable

    • padding

      protected byte padding

    • decodingTable

      protected final byte[] decodingTable

  • Constructor Details

    • Base64Encoder

      public Base64Encoder()

  • Method Details

    • initialiseDecodingTable

      protected void initialiseDecodingTable()

    • encode

      public int encode(byte[] inBuf, int inOff, int inLen, byte[] outBuf, int outOff) throws IOException
      Throws:
      IOException

    • getEncodedLength

      public int getEncodedLength(int inputLength)
      Description copied from interface: Encoder
      Return the expected output length of the encoding.
      Specified by:
      getEncodedLength in interface Encoder
      Parameters:
      inputLength - the input length of the data.
      Returns:
      the output length of an encoding.

    • getMaxDecodedLength

      public int getMaxDecodedLength(int inputLength)
      Description copied from interface: Encoder
      Return the maximum expected output length of a decoding. If padding is present the value returned will be greater than the decoded data length.
      Specified by:
      getMaxDecodedLength in interface Encoder
      Parameters:
      inputLength - the input length of the encoded data.
      Returns:
      the upper bound of the output length of a decoding.

    • encode

      public int encode(byte[] buf, int off, int len, OutputStream out) throws IOException
      encode the input data producing a base 64 output stream.
      Specified by:
      encode in interface Encoder
      Returns:
      the number of bytes produced.
      Throws:
      IOException

    • decode

      public int decode(byte[] data, int off, int length, OutputStream out) throws IOException
      decode the base 64 encoded byte data writing it to the given output stream, whitespace characters will be ignored.
      Specified by:
      decode in interface Encoder
      Returns:
      the number of bytes produced.
      Throws:
      IOException

    • decode

      public int decode(String data, OutputStream out) throws IOException
      decode the base 64 encoded String data writing it to the given output stream, whitespace characters will be ignored.
      Specified by:
      decode in interface Encoder
      Returns:
      the number of bytes produced.
      Throws:
      IOException