1File::KDBX::IO::HashBloUcske(r3)Contributed Perl DocumenFtialtei:o:nKDBX::IO::HashBlock(3)
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NAME

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

9       version 0.906
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DESCRIPTION

12       Writing to a hash-block handle will transform the data into a series of
13       blocks. Each block is hashed, and the hash is included with the block
14       in the stream.
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16       Reading from a handle, each hash block will be verified as the blocks
17       are disassembled back into a data stream.
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19       This format helps ensure data integrity of KDBX3 files.
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21       Each block is encoded thusly:
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23       •   Block index - Little-endian unsigned 32-bit integer, increments
24           starting with 0
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26       •   Hash - 32 bytes
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28       •   Block size - Little-endian unsigned 32-bit (counting only the data)
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30       •   Data - String of bytes
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32       The terminating block is an empty block where hash is 32 null bytes,
33       block size is 0 and there is no data.
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ATTRIBUTES

36   algorithm
37       Digest algorithm in hash-blocking the stream (default: "SHA-256")
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39   block_size
40       Desired block size when writing (default:
41       $File::KDBX::IO::HashBlock::BLOCK_SIZE or 1,048,576 bytes)
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METHODS

44   new
45           $fh = File::KDBX::IO::HashBlock->new(%attributes);
46           $fh = File::KDBX::IO::HashBlock->new($fh, %attributes);
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48       Construct a new hash-block stream IO handle.
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BUGS

51       Please report any bugs or feature requests on the bugtracker website
52       <https://github.com/chazmcgarvey/File-KDBX/issues>
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54       When submitting a bug or request, please include a test-file or a patch
55       to an existing test-file that illustrates the bug or desired feature.
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AUTHOR

58       Charles McGarvey <ccm@cpan.org>
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61       This software is copyright (c) 2022 by Charles McGarvey.
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63       This is free software; you can redistribute it and/or modify it under
64       the same terms as the Perl 5 programming language system itself.
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68perl v5.36.1                      2023-09-27      File::KDBX::IO::HashBlock(3)
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