Secure hash and message digest algorithms writen in plain LabVIEW designed primarily for web application authentication.

LabVIEW library includes: SHA-256, SCRAM-SHA-256, PBKDF2-SHA-256, HMAC-SHA-256 and Base64 encoding/decoding.

To install, download and run the VI Package (*.vip) using the VI Package Manager which is installed with LabVIEW.

This VI Package installs to the <LABVIEW>\user.lib\_rcpacini\hashlib directory and is available on the diagram palette Functions > User Libraries > rcpacini > Hashlib.

Once the VI Package is installed, open the example VI located at <LABVIEW>\examples\rcpacini\hashlib\hashlib_example.vit.

• SCRAM-SHA-256 - RFC 5802 Secure authentication mechanism (client first and final messages)
• PBKDF2-SHA-256 - RFC 2898C Salted password-based cryptography
• HMAC-SHA-256 - RFC 2104 Keyed hashing
• SHA-256 - RFC 4634 256 bit hash
• Base64 - RFC 4648 Encode/decode

Refer to the specifications at https://tools.ietf.org/html/rfcXXXX .

The following sections are instructions on how to rebuild and test this package.

To rebuild the Source Zip, open the hashlib\hashlib.lvproj (LabVIEW Project), navigate to the Build Specifications > Hashlib Source properties, under Zip Information update the Destination filename version and press Build.

The Source Zip is output to releases/rcpacini_hashlib-X.X.X.X.zip

To rebuild the VI Package, open the hashlib\hashlib.vipb (VI Package Build) in VI Package Manager, update the version information and press Build.

The VI Package is output to releases/rcpacini_hashlib-X.X.X.X.vip

Once the VI Package is installed to Functions > User Libraries > rcpacini > Hashlib, open the tests\test_hashlib.lvproj and run the test_all.vi. If successful, the all_passed boolean should return True.

Submit a ticket for bug fixes or feature requests.

-Ryan