home *** CD-ROM | disk | FTP | other *** search
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
- = DCPcrypt Cryptographic Component Library v2 Beta 2 =
- = Copyright (c) 1999-2002 David Barton =
- = http://www.cityinthesky.co.uk/ =
- = crypto@cityinthesky.co.uk =
- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-
-
- Introduction:
-
- DCPcrypt is a collection of cryptographic components for the Borland
- Delphi(tm), C++ Builder(tm) and Kylix(tm) programming languages. The
- supported versions are Delphi 4, 5 and 6, C++ Builder (3?), 4, 5, 6
- and Kylix 1 (untested) and 2.
-
- The idea behind DCPcrypt is that it should be possible to "drop in"
- any algorithm implementation to replace another with minimum or no
- code changes. To aid in this goal all cryptographic components are
- descended from one of several base classes, TDCP_cipher for encryption
- algorithms and TDCP_hash for message digest algorithms.
-
- DCPcrypt is open source software (released under the MIT license) and
- as such there is no charge for inclusion in other software. However, I
- am currently a student and if you are making money from my software I
- would really appreciate a donation of some sort, whether financial or
- a license for the software you develop (or if anyone wants to sponsor
- a Mathematical Modelling (Masters) student for their final year...).
- Please note THIS IS NOT COMPULSORY IN ANY WAY. See
- http://www.cityinthesky.co.uk/cryptography.html for details on
- financial donations.
-
- This software is OSI Certified Open Source Software.
- OSI Certified is a certification mark of the Open Source Initiative.
-
- If you maintain a website then a link to my page at
- http://www.cityinthesky.co.uk/ would be great!
-
-
-
- What's New:
-
- Changes since DCPcrypt v2 Beta 1 include
-
- * Renamed source code files for hashes and ciphers to DCPxxx.pas
-
- * Change the format of Cipher.InitStr so that the hash algorithm
- used to generate the key is explicitly specified. In order to
- get the same functionality as before, use TDCP_sha1.
- e.g. Cipher.InitStr('Hello World',TDCP_sha1);
-
- * Block ciphers are now inherited from an intermediate component
- that implements the block size specific chaining mode encryption
- routines.
-
- * Remove the internal component registration, it was more hassle
- than it was worth. If there is a demand for this to be put back
- then I might...
-
- * Added the full range of operation modes for Haval. By changing
- the defines at the top of DCPhaval.pas you can specify the
- number of passes and the output hash size.
-
- * Added the Tiger hash algorithm (192bit digest).
-
- * Changed the name of the file containing TDCP_ripemd160 for
- consistency to DCPripemd160 from DCPrmd160.
-
- * GOST no longer appears on the component palette pending verifying
- what the actual standard is (the code is still included however).
-
- * Added the RipeMD-128 hash algorithm (128bit digest).
-
- * Added the Serpent block cipher (AES finalist).
-
- * Added the SHA-256,384,512 hash algorithms (256, 384, 512bit digest
- respectively).
-
- * Added CTR chaining mode to all block ciphers.
-
-
-
- Installation:
-
- Delphi: Open the appropriate package, DCPdelphiX.dpk where X is
- your version of Delphi (either 4, 5 or 6). Then press the
- install button.
-
- C++ Builder: Create a new design time package and add all the .pas
- files from the DCPcrypt2.zip archive including all those
- in the Ciphers and Hashes subdirectories. Then press the
- install button.
-
- Kylix: Open the DCPkylix.dpk package and then press the install
- button (note: Kylix 1 users may need to create a new
- package as with C++ Builder as this is a Kylix 2 package).
-
- You may need to add the directory containing DCPcrypt (and the Ciphers
- and Hashes subdirectories) to your library search path (found under
- Environment Options).
-
- Once installed you will find two extra pages of components on your
- component palette, namely DCPciphers and DCPhashes. You can now place
- these components onto the form of your application to start using the
- algorithms.
-
-
-
- Usage:
-
- See the main html documentation in the Docs subdirectory.
-
-
-
- Contact:
-
- I appreciate knowing what DCPcrypt is being used for and also if you
- have any queries or bug reports please email me at crypto@cityinthesky.co.uk.
-
-
-
- DCPcrypt is copyrighted (c) 1999-2002 David Barton.
- All trademarks are property of their respective owners.