Cryptographic Functions for Office Visual Basic files.
Use the package manager pip to install MS_OVBA_Compression.
pip install ms_ovba_crypto
Microsoft VBA files use a custom encryption algorithm to obfuscate visibility and permission fields. The clsid is used as a seed.
import ms_ovba_crypto
data = b'\x00\x00\x00\x00',
clsid = '{9E394C0B-697E-4AEE-9FA6-446F51FB30DC}'
# Random numbers are used in the obfuscation, so the output is not deterministic.
encrypted = ms_ovba_crypto.encrypt(clsid, data)
data = b'\x41\x43\x5A\x5A\x5E\x5A\x5E\x5A\x5E\x5A\x5E'
# returns b'\x00\x00\x00\x00'
ms_ovba_crypto.decrypt(data)
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.
Please make sure to update tests as appropriate.
FAQs
Encryption and hashing functions for Office VBA files.
We found that ms-ovba-crypto demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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