Package org.tinyradius.core.attribute.codec

Class BaseCodec

java.lang.Object
org.tinyradius.core.attribute.codec.BaseCodec
public abstract class BaseCodec
extends java.lang.Object

  • Constructor Summary

    Constructors 
    Constructor Description
    BaseCodec()  

  • Method Summary

    Modifier and Type Method Description
    byte[] decode​(byte[] data, byte[] requestAuth, java.lang.String sharedSecret)
    Decodes the passed encoded attribute data and returns the cleartext form as bytes
    protected abstract byte[] decodeData​(byte[] encodedData, byte[] auth, byte[] secret)  
    byte[] encode​(byte[] data, byte[] requestAuth, java.lang.String sharedSecret)
    Encodes plaintext data
    protected abstract byte[] encodeData​(byte[] data, byte[] auth, byte[] secret)  
    protected byte[] md5​(byte[] a, byte[] b)  
    protected static byte[] pad16x​(byte[] val)  
    protected static byte[] xor16​(byte[] src1, int src1offset, byte[] src2)  

    Methods inherited from class java.lang.Object

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

  • Constructor Details

  • Method Details

    • encode

      public byte[] encode​(byte[] data, byte[] requestAuth, java.lang.String sharedSecret) throws RadiusPacketException
      Encodes plaintext data
      Parameters:
      data - the data to encrypt
      requestAuth - packet authenticator
      sharedSecret - shared secret
      Returns:
      the byte array containing the encrypted data
      Throws:
      RadiusPacketException - errors encoding attribute data

    • decode

      public byte[] decode​(byte[] data, byte[] requestAuth, java.lang.String sharedSecret) throws RadiusPacketException
      Decodes the passed encoded attribute data and returns the cleartext form as bytes
      Parameters:
      data - data to decrypt, excl. type/length/tag
      requestAuth - packet authenticator
      sharedSecret - shared secret
      Returns:
      decrypted data
      Throws:
      RadiusPacketException - errors decoding attribute data

    • encodeData

      protected abstract byte[] encodeData​(byte[] data, byte[] auth, byte[] secret)
      Parameters:
      data - data to encrypt, excl. derived/random generated data e.g. salt/length/padding
      auth - request authenticator
      secret - shared secret
      Returns:
      byte array representing salt+string

    • decodeData

      protected abstract byte[] decodeData​(byte[] encodedData, byte[] auth, byte[] secret) throws RadiusPacketException
      Parameters:
      encodedData - byte array representing salt+string
      auth - request authenticator
      secret - shared secret
      Returns:
      password sub-field (excl. salt, length, padding)
      Throws:
      RadiusPacketException - error while decoding attribute data

    • xor16

      protected static byte[] xor16​(byte[] src1, int src1offset, byte[] src2)

    • md5

      protected byte[] md5​(byte[] a, byte[] b)

    • pad16x

      protected static byte[] pad16x​(byte[] val)
      Parameters:
      val - byte array to pad
      Returns:
      byte array containing input, padded size multiple of 16