C++ Builder 6.0x shareware
Compression, Encryption

[ DIZipWriter_2.0.exe ] [ 866,037 bytes ] [ Shareware ] [ No Source ]
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DIZipWriter is a high performance zipping component with strong AES encryption for Borland Delphi. It creates standard ZIP archives as well as high-security archives with up to 256-bit key size introduced by WinZip 9. There is no other known Delphi component supporting this level of ZIP encryption.

Another unique feature of DIZipWriter is its TStream based interface, which allows to:

  • Create ZIP archives as streams, including files, memory streams, BLOB streams, etc.
  • Create entire ZIP archives in memory or write them directly to database BLOBs.
  • Add ZIP entries from streams using the CopyFrom procedure.
  • Directly stream objects to ZIP archives using the SaveToStream procedure.

In addition to streams, DIZipWriter also works with

  • files, including long file names and relative paths
  • strings
  • memory buffers and records.

For optimal performance, DIZipWriter writes all data straight to the ZIP archive and uses no temporary files. Its footprint and memory requirements and are very small. Includes HTML help and example projects.

Added: 5-05-2002/7-06-2005   |  Version: 2.0   |  Downloads: 554/553/3
Author:Ralf Junker   The Delphi Inspiration   [Homepage]   [DSP files]
Ralf Junker   [Homepage]   [DSP files]

[ link: compression_component_compression_delphi_encryption_delphi_flexcompress.htm ] [ size n/a ] [ Shareware ] [ No Source ]
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FlexCompress is a high-speed compression library developed to provide archive functionality for your applications. This solution provides flexible compression and strong encryption algorithms that allows you to integrate archiving or backup features into your programs in a fast and easy way.

FlexCompress includes our new unique technology, a transaction system. This innovative solution gives you a rapid and simple way of updating archive files providing data integrity like a reliable database system.
Key features:
- Creates archive files of custom format having better compression rate than WinZip and WinRar
- Native VCL; no DLLs; no OCXs
- Adds, moves, extracts, deletes, updates, tests, refreshes a group of files by a single operation
- Creates encrypted archives using strong encryption algorithms
- Creates self-extracting (SFX) archives
- Performs regularly archive updates using transactions that allows canceling all modifications at any time in case of some failures. Also this technology optimizes the speed of the archive modification
- Compresses large files with low memory consumption
- Comprehensive help; lots of demos
- Repairs damaged archives
- Maximum archive size is 2^63 bytes
- Archive splitting and multiple disk spanning support
Added: 14-06-2005/27-02-2006   |  Version: 2.70   |  Downloads: n/a
Author:ComponentAce   ComponentAce   [Homepage]   [DSP files]

[ link: compression_delphi_component_streaming_compression_easy_compression_library.htm ] [ size n/a ] [ Shareware ] [ No Source ]
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With Easy Compression Library you can add advanced compression and encryption functionality to your projects as quickly and easily as never before. Based on new original One-Stream technology, this toolkit has everything you need to compress and encrypt files, strings, data packets and even BLOB fields. Easy Compression Library provides a wide variety of compression algorithms, so you can obtain high speed as well as high compression ratio that make Easy Compression Library your best choice. The Easy Compression Library is a cross-platform product. There are three editions of Easy Compression Library: Delphi and C++ Builder, Kylix and ActiveX. Key Features: # A plenty of advanced compression algorithms # Unmatched ease-of-use # Fully compatible with Borland stream classes # No DLLs, compiles right into your EXE # Small customizable footprint # Strong encryption, compression on-the-fly
Added: 15-11-2005/1-02-2006   |  Version: 3.55   |  Downloads: n/a
Author:ComponentAce   ComponentAce   [Homepage]   [DSP files]

[ link: compLHA.htm ] [ size n/a ] [ Shareware ] [ No Source ]
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TCompLHA component set
  • Standard support for Delphi 6, 7, 8, 2005, Kylix 3 and C++ 6 (Delphi 1-5, C++ Builder 1-5 and Kylix 1-2 no longer officially supported)
  • Create and manage multi-file compressed archives
  • Files and archives up to 8 exabytes supported (Note: memory streams and descendants are still limited to 2GB in size)
  • Simple one-step methods for most operations, including backup/restore
  • Create segmented (multi-disk) archives with the TSegLHA component
  • Read/write archives made with LHArc and LHA (also shell utilities like WinZip)
  • Read compatible with TCompress archives
  • Compress any stream (e.g. memory, database blobs) directly to/from archives
  • Standard user interface provided, fully customizable
  • Encryption, wild card and self-extracting EXEs all supported
  • Built-in verify and "safe" modes -- ideal for Internet and communication applications
  • Thread-safe, NATIVE compression -- no DLL or OCX worries
  • Full component source code available
  • Registration $US79 (new users) $NZ59 (registered users)
  • Download your upgrade or free evaluation copy from http://www.spis.co.nz/complha.htm
Added: 12-11-1997/20-12-2004   |  Version: 8.0   |  Downloads: n/a
Author:Peter Hyde   SPIS Ltd   [Homepage]   [DSP files]

[ link: compress.htm ] [ size n/a ] [ Shareware ] [ No Source ]
[ D6 | D7 | D8 | D2 | C6 | K3 ]
TCompress component set
  • Standard support for Delphi 6, 7, 8, 2005, Kylix 3 and C++ Builder 6 (Delphi 1-5, C++ Builder 1-5 and Kylix 1-2 no longer officially supported)
  • Thread-safe NATIVE compression -- no DLL, OCX worries
  • Multi-file compressed archives using the TCompress component
  • Files and archives up to 8 exabytes are supported (Note: memory streams and their descendants are still limited to 2 GBytes in size)
  • Database BLOB (memo, image) compression with TCDBMemo, TCDBimage and TCDBRichText
  • In-memory compression using streams (file/memory/blob/resource<-- >file/memory/blob)
  • Event hooks for customizable user interaction
  • Built-in LZH5 (Lempel-Ziv-Huffman) and RLE (Run-Length Encoding) compression
  • Easy to add your own custom compression routines at any time
  • Functions and examples to support compressed resources and self- extracting EXEs
  • CompressString and ExpandString utility methods
  • Key-based compressed data encryption
  • Loads of example source included
  • Full component source code available
  • Registration $US79 (new users) $NZ59 (registered users)
  • Download your upgrade or free evaluation copy from http://www.spis.co.nz/compress.htm
Added: 20-12-2004   |  Version: 8.0   |  Downloads: n/a
Author:Peter Hyde   SPIS Ltd   [Homepage]   [DSP files]

[ unixcrypt.zip ] [ 207,242 bytes ] [ Shareware ] [ No Source ]
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The UnixCrypt component is the ultra fast crypt implementation for Delphi/BCB. It works exactly as crypt(key, salt) Unix comand (one-way encryption algorithm), which used to encrypt passwords in .htpasswd files in password protected Web directories. [more]
Added: 23-09-2001/20-12-2004   |  Version: 1.2   |  Downloads: 1205/1205/8
Author:Aleksey Kuznetsov   UtilMind Solutions   [Homepage]   [DSP files]

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