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https://git.code.sf.net/p/lazarus-ccr/dcpcrypt
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134 lines
4.5 KiB
Plaintext
134 lines
4.5 KiB
Plaintext
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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= DCPcrypt Cryptographic Component Library v2.0.4.1 =
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= Copyright (c) 1999-2003 David Barton =
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= http://www.cityinthesky.co.uk/ =
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= crypto@cityinthesky.co.uk =
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=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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Introduction:
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DCPcrypt is a collection of cryptographic components for the Borland
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Delphi(tm), C++ Builder(tm), Kylix(tm) and the Free Pascal programming
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languages. The supported versions are Delphi 4, 5, 6, 7, 2005,
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C++ Builder (3?), 4, 5, (6?) and Kylix 1 (untested), 2 and 3 (untested)
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and Free Pascal v2.0.4 and later.
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Thanks to Manuel C. for the modifications to make DCPcrypt work under
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Delphi 2005!
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The idea behind DCPcrypt is that it should be possible to "drop in"
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any algorithm implementation to replace another with minimum or no
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code changes. To aid in this goal all cryptographic components are
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descended from one of several base classes, TDCP_cipher for encryption
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algorithms and TDCP_hash for message digest algorithms.
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DCPcrypt is open source software (released under the MIT license) and
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as such there is no charge for inclusion in other software.
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This software is OSI Certified Open Source Software.
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OSI Certified is a certification mark of the Open Source Initiative.
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If you maintain a website then a link to the DCPCrypt wiki page at
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http://wiki.lazarus.freepascal.org/DCPcrypt would be great!
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What's New:
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Changes since....
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* Please see the source code repository history.
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Changes since DCPcrypt v2 Beta 2 include
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* Corrected C++ Builder compilation problem.
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Changes since DCPcrypt v2 Beta 1 include
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* Renamed source code files for hashes and ciphers to DCPxxx.pas
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* Change the format of Cipher.InitStr so that the hash algorithm
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used to generate the key is explicitly specified. In order to
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get the same functionality as before, use TDCP_sha1.
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e.g. Cipher.InitStr('Hello World',TDCP_sha1);
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* Block ciphers are now inherited from an intermediate component
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that implements the block size specific chaining mode encryption
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routines.
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* Remove the internal component registration, it was more hassle
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than it was worth. If there is a demand for this to be put back
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then I might...
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* Added the full range of operation modes for Haval. By changing
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the defines at the top of DCPhaval.pas you can specify the
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number of passes and the output hash size.
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* Added the Tiger hash algorithm (192bit digest).
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* Changed the name of the file containing TDCP_ripemd160 for
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consistency to DCPripemd160 from DCPrmd160.
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* GOST no longer appears on the component palette pending verifying
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what the actual standard is (the code is still included however).
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* Added the RipeMD-128 hash algorithm (128bit digest).
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* Added the Serpent block cipher (AES finalist).
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* Added the SHA-256,384,512 hash algorithms (256, 384, 512bit digest
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respectively).
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* Added CTR chaining mode to all block ciphers.
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Installation:
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Free Pascal & Lazarus:
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Please see the following URL:
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http://wiki.lazarus.freepascal.org/DCPcrypt
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Delphi: Open the appropriate package, DCPdelphiX.dpk where X is
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your version of Delphi (either 4, 5 or 6). Then press the
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install button.
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C++ Builder: Create a new design time package and add all the .pas
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files from the DCPcrypt2.zip archive including all those
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in the Ciphers and Hashes subdirectories. Then press the
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install button.
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Kylix: Open the DCPkylix.dpk package and then press the install
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button (note: Kylix 1 users may need to create a new
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package as with C++ Builder as this is a Kylix 2 package).
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You may need to add the directory containing DCPcrypt (and the Ciphers
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and Hashes subdirectories) to your library search path (found under
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Environment Options).
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Once installed you will find two extra pages of components on your
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component palette, namely DCPciphers and DCPhashes. You can now place
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these components onto the form of your application to start using the
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algorithms.
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Usage:
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See the main html documentation in the Docs subdirectory.
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Contact:
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I appreciate knowing what DCPcrypt is being used for and also if you
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have any queries or bug reports please email me at crypto@cityinthesky.co.uk.
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DCPcrypt is copyrighted (c) 1999-2003 David Barton.
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All trademarks are property of their respective owners.
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