Class IncrementalIntStatefulHash

    • Method Detail

      • algorithm

        public java.lang.String algorithm()
        Description copied from interface: Hash
        Returns the canonical name of this hash algorithm.
        Specified by:
        algorithm in interface Hash
        Returns:
        the name of this hash algorithm
      • length

        public int length()
        Description copied from interface: Hash
        Returns the length in bytes of the output of this hash function.
        Specified by:
        length in interface Hash
        Returns:
        the hash length in bytes
      • createNew

        public StatefulHash createNew()
        Description copied from interface: StatefulHash
        Returns a new instance of this stateful hash function reset to the initial state.
        Specified by:
        createNew in interface StatefulHash
        Returns:
        a new instance of this hash in the initial state
      • supportsIncremental

        public boolean supportsIncremental()
        Description copied from interface: StatefulHash
        Returns whether this hash function supports incremental hashing. Incremental hashing allows calling the StatefulHash.update(byte[]) methods to continue hashing using accumulated state after calling any of the output methods (such as StatefulHash.getBytes()). Non-incremental hash functions require calling StatefulHash.reset() to reinitialize the state between calling an output method and an update method.
        Specified by:
        supportsIncremental in interface StatefulHash
        Returns:
        true if incremental hashing is supported, false if not
      • reset

        public void reset()
        Description copied from interface: StatefulHash
        Resets this hash function to its initial state. Resetting the state is required for non-incremental hash functions after any output methods have been called.
        Specified by:
        reset in interface StatefulHash
      • update

        public void update​(java.nio.ByteBuffer input)
        Description copied from interface: StatefulHash
        Updates the state of this hash function with the remaining contents of the given input buffer. This method leaves the buffer position at the limit.
        Specified by:
        update in interface StatefulHash
        Overrides:
        update in class AbstractStatefulHash
        Parameters:
        input - the input buffer
      • update

        public void update​(long address,
                           long length)
        Description copied from interface: StatefulHash
        Updates the state of this hash function with memory with the given address and length. The arguments are generally not checked in any way and will likely lead to a VM crash or undefined results if invalid.
        Specified by:
        update in interface StatefulHash
        Overrides:
        update in class AbstractStatefulHash
        Parameters:
        address - the base address of the input
        length - the length of the input
        See Also:
        Hash.supportsUnsafe()
      • updateUnchecked

        protected void updateUnchecked​(byte[] input,
                                       int index,
                                       int length)
        Description copied from class: AbstractStatefulHash
        Updates the state of this hash function with the given range of the given input array. The index and length parameters have already been validated.
        Specified by:
        updateUnchecked in class AbstractStatefulHash
        Parameters:
        input - the input array
        index - the starting index of the first input byte
        length - the length of the input range
      • getInt

        public int getInt()
        Description copied from interface: StatefulHash
        Returns the first four bytes of the output of this hash function as a little-endian int. If the output is less than four bytes, the remaining bytes are set to 0.
        Specified by:
        getInt in interface StatefulHash
        Returns:
        the first four output bytes as an int
      • getLong

        public long getLong()
        Description copied from interface: StatefulHash
        Returns the first eight bytes of the output of this hash function as a little-endian long. If the output is less than eight bytes, the remaining bytes are set to 0.
        Specified by:
        getLong in interface StatefulHash
        Returns:
        the first eight output bytes as a long