NAME

       File::KDBX::IO::HashBlock - Hash block stream IO handle

VERSION

       version 0.906

DESCRIPTION

       Writing to a hash-block handle will transform the data into a series of blocks. Each block
       is hashed, and the hash is included with the block in the stream.

       Reading from a handle, each hash block will be verified as the blocks are disassembled
       back into a data stream.

       This format helps ensure data integrity of KDBX3 files.

       Each block is encoded thusly:

       •   Block index - Little-endian unsigned 32-bit integer, increments starting with 0

       •   Hash - 32 bytes

       •   Block size - Little-endian unsigned 32-bit (counting only the data)

       •   Data - String of bytes

       The terminating block is an empty block where hash is 32 null bytes, block size is 0 and
       there is no data.

ATTRIBUTES

   algorithm
       Digest algorithm in hash-blocking the stream (default: "SHA-256")

   block_size
       Desired block size when writing (default: $File::KDBX::IO::HashBlock::BLOCK_SIZE or
       1,048,576 bytes)

METHODS

   new
           $fh = File::KDBX::IO::HashBlock->new(%attributes);
           $fh = File::KDBX::IO::HashBlock->new($fh, %attributes);

       Construct a new hash-block stream IO handle.

BUGS

       Please report any bugs or feature requests on the bugtracker website
       <https://github.com/chazmcgarvey/File-KDBX/issues>

       When submitting a bug or request, please include a test-file or a patch to an existing
       test-file that illustrates the bug or desired feature.

AUTHOR

       Charles McGarvey <ccm@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2022 by Charles McGarvey.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.