Package org.bouncycastle.crypto.digests

Class GOST3411_2012Digest

java.lang.Object
org.bouncycastle.crypto.digests.GOST3411_2012Digest
All Implemented Interfaces:
Digest, ExtendedDigest, Memoable
Direct Known Subclasses:
GOST3411_2012_256Digest, GOST3411_2012_512Digest
public abstract class GOST3411_2012Digest extends Object implements ExtendedDigest, Memoable
Base class for GOST3411-2012 256-bit and GOST3411-2012 512-bit digests.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected final CryptoServicePurpose
    purpose
     

  • Constructor Summary

    Constructors
    Constructor
    Description
    GOST3411_2012Digest(byte[] IV, CryptoServicePurpose purpose)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract Memoable
    copy()
    Produce a copy of this object with its configuration and in its current state.
    int
    doFinal(byte[] out, int outOff)
    close the digest, producing the final digest value.
    abstract 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.
    abstract int
    getDigestSize()
    return the size, in bytes, of the digest produced by this message digest.
    void
    reset()
    reset the digest back to it's initial state.
    void
    reset(Memoable other)
    Restore a copied object state into this object.
    void
    update(byte in)
    update the message digest with a single byte.
    void
    update(byte[] in, 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

  • Constructor Details

  • Method Details

    • 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.

    • getAlgorithmName

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

    • getDigestSize

      public abstract 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[] in, 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:
      in - 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[] out, 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:
      out - the array the digest is to be copied into.
      outOff - the offset into the out array the digest is to start at.

    • reset

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

    • copy

      public abstract 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.