This is based on the work by Brad Conte with no cross-licensing, available at
this GitHub repository. For each of the
cryptography source files, I've added a <algorithm>_file function signature for reading
in a filestream and computing the checksum. Although not necessarily a "hash" algorithm,
I've added an implementation of CRC32 where the polynomial table is pre-defined for 32-bit words.
For cleanup, I've added atexit methods in the event the hashing is interrupted to prevent open
file handlers on abnormal termination.
Additionally, there's a uuidgen executable that can be used for generating versions 3, 4, and 5 Universal
Unique Identifiers. Visual Studio works with CMake, Linux and Apple still need to be tested.
For encrypting/decrypting data, the Blowfish algorithm has been added.
To run MATLAB tests, the test_filehash.m class can be used as a test case alongside the file_hash.py
file to regenerate the test results for the test file "test.txt".
To build, you'll need cmake and Visual Studio 2017 installed, (or a compiler compatible with your target release of MATLAB.) Unfortunately, VS2017 builds 32-bit applications by default. You'll need to specify the 64-bit architecture, or, alternatively, install VS2019 which supports 64-bit applications out of the box.
To generate the build files, run the following command with file-hash as your active directory:
"C:\Program Files\CMake\bin\cmake.exe" -S . -B build -A x64
To generate the executable and MEX file, run the following:
"C:\Program Files\CMake\bin\cmake.exe" --build build --target ALL_BUILD
The ALL_BUILD target is a result of using Visual Studio which doesn't have all as its default build target.