Class AsconEngine

    • Method Summary

      All Methods Instance Methods Concrete Methods Deprecated Methods 
      Modifier and Type Method Description
      protected void ascon_aeadinit()
      Deprecated.
       
      protected void checkAAD()  
      protected boolean checkData()  
      int doFinal​(byte[] outBytes, int outOff)
      Finish the operation either appending or verifying the MAC at the end of the data.
      java.lang.String getAlgorithmName()
      Return the name of the algorithm.
      java.lang.String getAlgorithmVersion()
      Deprecated.
       
      int getIVBytesSize()  
      int getKeyBytesSize()  
      byte[] getMac()
      Return the value of the MAC associated with the last stream processed.
      int getOutputSize​(int len)
      return the size of the output buffer required for a processBytes plus a doFinal with an input of len bytes.
      int getUpdateOutputSize​(int len)
      return the size of the output buffer required for a processBytes an input of len bytes.
      void init​(boolean forEncryption, CipherParameters params)
      initialise the underlying cipher.
      protected void init​(byte[] key, byte[] iv)
      Deprecated.
       
      protected long loadBytes​(byte[] in, int inOff)
      Deprecated.
       
      protected void p​(int nr)  
      protected long pad​(int i)
      Deprecated.
       
      void processAADByte​(byte in)
      Add a single byte to the associated data check.
      void processAADBytes​(byte[] inBytes, int inOff, int len)
      Add a sequence of bytes to the associated data check.
      protected void processBufferAAD​(byte[] buffer, int inOff)  
      protected void processBufferDecrypt​(byte[] buffer, int bufOff, byte[] output, int outOff)  
      protected void processBufferEncrypt​(byte[] buffer, int bufOff, byte[] output, int outOff)  
      int processByte​(byte in, byte[] out, int outOff)
      encrypt/decrypt a single byte.
      int processBytes​(byte[] inBytes, int inOff, int len, byte[] outBytes, int outOff)
      process a block of bytes from in putting the result into out.
      protected void processFinalAadBlock()
      Deprecated.
       
      protected void processFinalDecrypt​(byte[] input, int inLen, byte[] output, int outOff)
      Deprecated.
       
      protected void processFinalEncrypt​(byte[] input, int inLen, byte[] output, int outOff)
      Deprecated.
       
      void reset()
      Reset the cipher.
      protected void reset​(boolean clearMac)  
      protected void setBytes​(long n, byte[] bs, int off)
      Deprecated.
       
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • m_state

        protected org.bouncycastle.crypto.engines.AsconBaseEngine.State m_state
      • nr

        protected int nr
      • ASCON_AEAD_RATE

        protected int ASCON_AEAD_RATE
      • K0

        protected long K0
      • K1

        protected long K1
      • N0

        protected long N0
      • N1

        protected long N1
      • ASCON_IV

        protected long ASCON_IV
      • x0

        protected long x0
      • x1

        protected long x1
      • x2

        protected long x2
      • x3

        protected long x3
      • x4

        protected long x4
      • m_bufferSizeDecrypt

        protected int m_bufferSizeDecrypt
      • m_buf

        protected byte[] m_buf
      • m_bufPos

        protected int m_bufPos
      • dsep

        protected long dsep
      • forEncryption

        protected boolean forEncryption
      • algorithmName

        protected java.lang.String algorithmName
      • KEY_SIZE

        protected int KEY_SIZE
      • IV_SIZE

        protected int IV_SIZE
      • MAC_SIZE

        protected int MAC_SIZE
      • initialAssociatedText

        protected byte[] initialAssociatedText
      • mac

        protected byte[] mac
    • Method Detail

      • pad

        protected long pad​(int i)
        Deprecated.
      • loadBytes

        protected long loadBytes​(byte[] in,
                                 int inOff)
        Deprecated.
      • setBytes

        protected void setBytes​(long n,
                                byte[] bs,
                                int off)
        Deprecated.
      • ascon_aeadinit

        protected void ascon_aeadinit()
        Deprecated.
      • processFinalAadBlock

        protected void processFinalAadBlock()
        Deprecated.
      • processFinalDecrypt

        protected void processFinalDecrypt​(byte[] input,
                                           int inLen,
                                           byte[] output,
                                           int outOff)
        Deprecated.
      • processFinalEncrypt

        protected void processFinalEncrypt​(byte[] input,
                                           int inLen,
                                           byte[] output,
                                           int outOff)
        Deprecated.
      • init

        protected void init​(byte[] key,
                            byte[] iv)
                     throws java.lang.IllegalArgumentException
        Deprecated.
        Throws:
        java.lang.IllegalArgumentException
      • getAlgorithmVersion

        public java.lang.String getAlgorithmVersion()
        Deprecated.
      • p

        protected void p​(int nr)
      • checkAAD

        protected void checkAAD()
      • checkData

        protected boolean checkData()
      • processBufferAAD

        protected void processBufferAAD​(byte[] buffer,
                                        int inOff)
      • processBufferDecrypt

        protected void processBufferDecrypt​(byte[] buffer,
                                            int bufOff,
                                            byte[] output,
                                            int outOff)
      • processBufferEncrypt

        protected void processBufferEncrypt​(byte[] buffer,
                                            int bufOff,
                                            byte[] output,
                                            int outOff)
      • processAADByte

        public void processAADByte​(byte in)
        Description copied from interface: AEADCipher
        Add a single byte to the associated data check.
        If the implementation supports it, this will be an online operation and will not retain the associated data.
        Parameters:
        in - the byte to be processed.
      • processAADBytes

        public void processAADBytes​(byte[] inBytes,
                                    int inOff,
                                    int len)
        Description copied from interface: AEADCipher
        Add a sequence of bytes to the associated data check.
        If the implementation supports it, this will be an online operation and will not retain the associated data.
        Parameters:
        inBytes - the input byte array.
        inOff - the offset into the in array where the data to be processed starts.
        len - the number of bytes to be processed.
      • processBytes

        public int processBytes​(byte[] inBytes,
                                int inOff,
                                int len,
                                byte[] outBytes,
                                int outOff)
                         throws DataLengthException
        Description copied from interface: AEADCipher
        process a block of bytes from in putting the result into out.
        Parameters:
        inBytes - the input byte array.
        inOff - the offset into the in array where the data to be processed starts.
        len - the number of bytes to be processed.
        outBytes - the output buffer the processed bytes go into.
        outOff - the offset into the output byte array the processed data starts at.
        Returns:
        the number of bytes written to out.
        Throws:
        DataLengthException - if the output buffer is too small.
      • doFinal

        public int doFinal​(byte[] outBytes,
                           int outOff)
                    throws java.lang.IllegalStateException,
                           InvalidCipherTextException,
                           DataLengthException
        Description copied from interface: AEADCipher
        Finish the operation either appending or verifying the MAC at the end of the data.
        Parameters:
        outBytes - space for any resulting output data.
        outOff - offset into out to start copying the data at.
        Returns:
        number of bytes written into out.
        Throws:
        java.lang.IllegalStateException - if the cipher is in an inappropriate state.
        InvalidCipherTextException - if the MAC fails to match.
        DataLengthException
      • getUpdateOutputSize

        public int getUpdateOutputSize​(int len)
        Description copied from interface: AEADCipher
        return the size of the output buffer required for a processBytes an input of len bytes.

        The returned size may be dependent on the initialisation of this cipher and may not be accurate once subsequent input data is processed - this method should be invoked immediately prior to input data being processed.

        Parameters:
        len - the length of the input.
        Returns:
        the space required to accommodate a call to processBytes with len bytes of input.
      • getOutputSize

        public int getOutputSize​(int len)
        Description copied from interface: AEADCipher
        return the size of the output buffer required for a processBytes plus a doFinal with an input of len bytes.

        The returned size may be dependent on the initialisation of this cipher and may not be accurate once subsequent input data is processed - this method should be invoked immediately prior to a call to final processing of input data and a call to AEADCipher.doFinal(byte[], int).

        Parameters:
        len - the length of the input.
        Returns:
        the space required to accommodate a call to processBytes and doFinal with len bytes of input.
      • reset

        protected void reset​(boolean clearMac)
      • getAlgorithmName

        public java.lang.String getAlgorithmName()
        Description copied from interface: AEADCipher
        Return the name of the algorithm.
        Specified by:
        getAlgorithmName in interface AEADCipher
        Returns:
        the algorithm name.
      • getKeyBytesSize

        public int getKeyBytesSize()
      • getIVBytesSize

        public int getIVBytesSize()
      • getMac

        public byte[] getMac()
        Description copied from interface: AEADCipher
        Return the value of the MAC associated with the last stream processed.
        Specified by:
        getMac in interface AEADCipher
        Returns:
        MAC for plaintext data.
      • reset

        public void reset()
        Description copied from interface: AEADCipher
        Reset the cipher. After resetting the cipher is in the same state as it was after the last init (if there was one).
        Specified by:
        reset in interface AEADCipher
      • processByte

        public int processByte​(byte in,
                               byte[] out,
                               int outOff)
                        throws DataLengthException
        Description copied from interface: AEADCipher
        encrypt/decrypt a single byte.
        Specified by:
        processByte in interface AEADCipher
        Parameters:
        in - the byte to be processed.
        out - the output buffer the processed byte goes into.
        outOff - the offset into the output byte array the processed data starts at.
        Returns:
        the number of bytes written to out.
        Throws:
        DataLengthException - if the output buffer is too small.
      • init

        public void init​(boolean forEncryption,
                         CipherParameters params)
        Description copied from interface: AEADCipher
        initialise the underlying cipher. Parameter can either be an AEADParameters or a ParametersWithIV object.
        Specified by:
        init in interface AEADCipher
        Parameters:
        forEncryption - true if we are setting up for encryption, false otherwise.
        params - the necessary parameters for the underlying cipher to be initialised.