MS-OVBA-Crypto
Cryptographic Functions for Office Visual Basic files.
Installation
Use the package manager pip to install MS_OVBA_Compression.
pip install ms_ovba_crypto
Usage
Microsoft VBA files use a custom encryption algorithm to obfuscate visibility and permission fields. The clsid is used as a seed.
from ms_ovba_crypto import MsOvbaCrypto
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 = MsOvbaCrypto.encrypt(clsid, data)
data = b'\x41\x43\x5A\x5A\x5E\x5A\x5E\x5A\x5E\x5A\x5E'
# returns b'\x00\x00\x00\x00'
MsOvbaCrypto.decrypt(data)
Typing stubs
The project also includes typed stubs for mypy. These stubs are autogenerated by stubgen, so they may be incomplete. Please let me know if they do not meet your needs and I can manage them manually.
Contributing
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.
License
1 maintainer
Metadata
1 maintainer
Release files for ms-ovba-crypto 2.0.1
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Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| ms_ovba_crypto-2.0.1.tar.gz | 4.7 kB | Without provenance | Details for ms_ovba_crypto-2.0.1.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| ms_ovba_crypto-2.0.1-py3-none-any.whl | Python 3 | none | any | Details for ms_ovba_crypto-2.0.1-py3-none-any.whl |
Total release size: 9.6 kB
Release files / ms_ovba_crypto-2.0.1.tar.gz
| Download URL | ms_ovba_crypto-2.0.1.tar.gz |
|---|---|
| Size | 4.7 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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No |
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twine/6.2.0 CPython/3.9.25
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Release files / ms_ovba_crypto-2.0.1-py3-none-any.whl
| Download URL | ms_ovba_crypto-2.0.1-py3-none-any.whl |
|---|---|
| Size | 4.9 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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No |
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twine/6.2.0 CPython/3.9.25
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