Package org.bouncycastle.crypto.digests

Class ISAPDigest

java.lang.Object
org.bouncycastle.crypto.digests.ISAPDigest
All Implemented Interfaces:
Digest, ExtendedDigest
public class ISAPDigest extends Object
ISAP Hash v2, https://isap.iaik.tugraz.at/ https://csrc.nist.gov/CSRC/media/Projects/lightweight-cryptography/documents/finalist-round/updated-spec-doc/isap-spec-final.pdf

ISAP Hash v2 with reference to C Reference Impl from: https://github.com/isap-lwc/isap-code-package

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static class 
    ISAPDigest.Friend
     

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected String
    algorithmName
     
    protected int
    BlockSize
     
    protected int
    DigestSize
     
    protected byte[]
    m_buf
     
    protected int
    m_bufPos
     
    protected org.bouncycastle.crypto.digests.BufferBaseDigest.ProcessingBuffer
    processor
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    ISAPDigest()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    doFinal(byte[] output, int outOff)
    close the digest, producing the final digest value.
    protected void
    ensureSufficientInputBuffer(byte[] input, int inOff, int len)
     
    protected void
    ensureSufficientOutputBuffer(byte[] output, int outOff)
     
    protected void
    finish(byte[] output, int outOff)
     
    String
    getAlgorithmName()
    return the algorithm name
    int
    getByteLength()
    Return the size in bytes of the internal buffer the digest applies it's compression function to.
    int
    getDigestSize()
    return the size, in bytes, of the digest produced by this message digest.
    protected void
    processBytes(byte[] input, int inOff)
     
    void
    reset()
    reset the digest back to it's initial state.
    void
    update(byte in)
    update the message digest with a single byte.
    void
    update(byte[] input, int inOff, int len)
    update the message digest with a block of bytes.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • DigestSize

      protected int DigestSize

    • BlockSize

      protected int BlockSize

    • m_buf

      protected byte[] m_buf

    • m_bufPos

      protected int m_bufPos

    • algorithmName

      protected String algorithmName

    • processor

      protected org.bouncycastle.crypto.digests.BufferBaseDigest.ProcessingBuffer processor

  • Constructor Details

    • ISAPDigest

      public ISAPDigest()

  • Method Details

    • processBytes

      protected void processBytes(byte[] input, int inOff)

    • finish

      protected void finish(byte[] output, int outOff)

    • reset

      public void reset()
      Description copied from interface: Digest
      reset the digest back to it's initial state.
      Specified by:
      reset in interface Digest

    • getAlgorithmName

      public String getAlgorithmName()
      Description copied from interface: Digest
      return the algorithm name
      Specified by:
      getAlgorithmName in interface Digest
      Returns:
      the algorithm name

    • getDigestSize

      public int getDigestSize()
      Description copied from interface: Digest
      return the size, in bytes, of the digest produced by this message digest.
      Specified by:
      getDigestSize in interface Digest
      Returns:
      the size, in bytes, of the digest produced by this message digest.

    • getByteLength

      public int getByteLength()
      Description copied from interface: ExtendedDigest
      Return the size in bytes of the internal buffer the digest applies it's compression function to.
      Specified by:
      getByteLength in interface ExtendedDigest
      Returns:
      byte length of the digests internal buffer.

    • update

      public void update(byte in)
      Description copied from interface: Digest
      update the message digest with a single byte.
      Specified by:
      update in interface Digest
      Parameters:
      in - the input byte to be entered.

    • update

      public void update(byte[] input, int inOff, int len)
      Description copied from interface: Digest
      update the message digest with a block of bytes.
      Specified by:
      update in interface Digest
      Parameters:
      input - the byte array containing the data.
      inOff - the offset into the byte array where the data starts.
      len - the length of the data.

    • doFinal

      public int doFinal(byte[] output, int outOff)
      Description copied from interface: Digest
      close the digest, producing the final digest value. The doFinal call leaves the digest reset.
      Specified by:
      doFinal in interface Digest
      Parameters:
      output - the array the digest is to be copied into.
      outOff - the offset into the out array the digest is to start at.

    • ensureSufficientInputBuffer

      protected void ensureSufficientInputBuffer(byte[] input, int inOff, int len)

    • ensureSufficientOutputBuffer

      protected void ensureSufficientOutputBuffer(byte[] output, int outOff)