Interface Digest

  • All Known Subinterfaces:
    ExtendedDigest, Xof
    All Known Implementing Classes:
    GeneralDigest

    public interface Digest
    interface that a message digest conforms to.
    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      int doFinal​(byte[] out, int outOff)
      close the digest, producing the final digest value.
      java.lang.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.
      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[] in, int inOff, int len)
      update the message digest with a block of bytes.
    • Method Detail

      • getAlgorithmName

        java.lang.String getAlgorithmName()
        return the algorithm name
        Returns:
        the algorithm name
      • getDigestSize

        int getDigestSize()
        return the size, in bytes, of the digest produced by this message digest.
        Returns:
        the size, in bytes, of the digest produced by this message digest.
      • update

        void update​(byte in)
        update the message digest with a single byte.
        Parameters:
        in - the input byte to be entered.
      • update

        void update​(byte[] in,
                    int inOff,
                    int len)
        update the message digest with a block of bytes.
        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

        int doFinal​(byte[] out,
                    int outOff)
        close the digest, producing the final digest value. The doFinal call leaves the digest reset.
        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

        void reset()
        reset the digest back to it's initial state.
      • getByteLength

        int getByteLength()
        Return the size in bytes of the internal buffer the digest applies it's compression function to.
        Returns:
        byte length of the digests internal buffer.