#DECRYPT FILE DELPHI CODE#
Commercial tools are okay, or any code or sample Delphi sources, but I'm looking for a thorough implementation within Delphi not a thing that imports and invokes functions in a dll.
I have seen, and don't want to use, anything that requires an external DLLs like the 7zip dll. I'd like to do the same in a single pass, using streams, without using memory equal to the size of the file (ergo, the compression and encryption should happen with streams, and not in memory).
#DECRYPT FILE DELPHI FREE#
Requirements: Free component with source, if possible. Below I'll list my requirements and what I've already attempted. I've done some experimenting without success. Right now, I'm using the TJvZlibMultiple component which creates its own non-Zip file format, but I have to create the archive, then encrypt it in a separate step (I'm using DcpCrypt right now). I need to use a Delphi component to encrypt a file that can then be decrypted using a freely available utility. for example, you may use the wcrypt2.pas unit which is available at. PS: please note to compile the code above you need header files for Crypt API. CryptFile ('d:\encrypted.dat', 'c:\datafile.txt', 'peter', False) Of course, you may change the code above to accept the any streams (not only file streams) and/or to use another algorithmes. I would like the encryption to be very strong (256 bit AES or better) but the compression doesn't matter to me. The convenient Decryption wizard allows you to do the following: Perform the decryption in bulk Specify a path of the output file to store the decrypted. CryptFile ('c:\datafile.txt', 'd:\encrypted.dat', 'peter', True) - to decrypt file.
I have looked at the Blowfish Unit in Lazarus, but. Most things have gone smoothly but I am having trouble finding some example code for decrypting and encrypting the database that I used TurboPower Blowfish LockBox component. I am moving over to Linux-Mint and using Lazarus. I am looking for a component or other technique to compress and encrypt multiple large files (files which exceed 4gb in size, and thus will not fit in the memory available to a win32 process) into a single file. I have a Delphi sqlite database with Blowfish encrypted strings.
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