Package org.bouncycastle.crypto.digests

Class SHAKENativeDigest

java.lang.Object
org.bouncycastle.crypto.digests.SHAKENativeDigest
All Implemented Interfaces:
Digest, EncodableDigest, EncodableService, ExtendedDigest, SavableDigestXof, Xof, Memoable
public class SHAKENativeDigest extends Object implements SavableDigestXof
SHAKE implementation.

  • Field Details

  • Constructor Details

    • SHAKENativeDigest

      public SHAKENativeDigest(CryptoServicePurpose purpose)

    • SHAKENativeDigest

      public SHAKENativeDigest(int bitLen, CryptoServicePurpose purpose)

    • SHAKENativeDigest

      public SHAKENativeDigest(int bitLen)

    • SHAKENativeDigest

      public SHAKENativeDigest()

    • SHAKENativeDigest

      public SHAKENativeDigest(SHAKENativeDigest src)

    • SHAKENativeDigest

      public SHAKENativeDigest(byte[] encoded, CryptoServicePurpose purpose)

    • SHAKENativeDigest

      public SHAKENativeDigest(byte[] encoded)

  • Method Details

    • 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.

    • 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.

    • doFinal

      public int doFinal(byte[] out, int outOff, int outLen)
      Description copied from interface: Xof
      Output the results of the final calculation for this digest to outLen number of bytes.
      Specified by:
      doFinal in interface Xof
      Parameters:
      out - output array to write the output bytes to.
      outOff - offset to start writing the bytes at.
      outLen - the number of output bytes requested.
      Returns:
      the number of bytes written

    • doOutput

      public int doOutput(byte[] out, int outOff, int outLen)
      Description copied from interface: Xof
      Start outputting the results of the final calculation for this digest. Unlike doFinal, this method will continue producing output until the Xof is explicitly reset, or signals otherwise.
      Specified by:
      doOutput in interface Xof
      Parameters:
      out - output array to write the output bytes to.
      outOff - offset to start writing the bytes at.
      outLen - the number of output bytes requested.
      Returns:
      the number of bytes written

    • reset

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

    • copy

      public Memoable copy()
      Description copied from interface: Memoable
      Produce a copy of this object with its configuration and in its current state.

      The returned object may be used simply to store the state, or may be used as a similar object starting from the copied state.

      Specified by:
      copy in interface Memoable

    • reset

      public void reset(Memoable other)
      Description copied from interface: Memoable
      Restore a copied object state into this object.

      Implementations of this method should try to avoid or minimise memory allocation to perform the reset.

      Specified by:
      reset in interface Memoable
      Parameters:
      other - an object originally copied from an object of the same type as this instance.

    • getEncodedState

      public byte[] getEncodedState()
      Description copied from interface: EncodableDigest
      Return an encoded byte array for the digest's internal state
      Specified by:
      getEncodedState in interface EncodableDigest
      Specified by:
      getEncodedState in interface EncodableService
      Returns:
      an encoding of the digests internal state.

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • cryptoServiceProperties

      protected CryptoServiceProperties cryptoServiceProperties()