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https://github.com/dsoprea/RijndaelPbkdf
Pure-Python Rijndael and PBKDF2 package. Python2 and Python3 compatible.
https://github.com/dsoprea/RijndaelPbkdf
pbkdf2 python rijndael
Last synced: 13 days ago
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Pure-Python Rijndael and PBKDF2 package. Python2 and Python3 compatible.
- Host: GitHub
- URL: https://github.com/dsoprea/RijndaelPbkdf
- Owner: dsoprea
- License: gpl-2.0
- Created: 2014-06-30T02:25:13.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2022-04-22T02:41:52.000Z (over 2 years ago)
- Last Synced: 2024-10-28T11:38:11.806Z (16 days ago)
- Topics: pbkdf2, python, rijndael
- Language: Python
- Homepage:
- Size: 43 KB
- Stars: 12
- Watchers: 3
- Forks: 4
- Open Issues: 7
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
[](https://travis-ci.org/dsoprea/RijndaelPbkdf)
## Overview
This package was a remedy to there being no PyPI-published, pure-Python
Rijndael (AES) implementations, and that nothing available, in general, was
compatible with both Python2 *and* Python3. The same is true of the PBKDF2
key-expansion algorithm.
The encryptor takes a source generator (which yields individual blocks). There
are source-generators provided for both data from a variable and data from a
file. It is trivial if you'd like to write your own. The encryptor and
decryptor functions are written as generators. Decrypted data has PKCS7
padding. A utility function is provided to trim this (*trim_pkcs7_padding*).
The implementation includes Python2 and Python3 implementations of both
Rijndael and PBKDF2, and chooses the version when loaded.
The default block-size is 128-bits in order to be compatible with AES.
This project is also referred to as *pprp*, which stands for "Pure Python
Rijndael and PBKDF2".
## Installation
Install via *pip*:
```
$ sudo pip install pprp
```
## Example
Encrypt and decrypt the data, and compare the results. This was copied directly
from the unit-test.
```python
passphrase = 'password'.encode('ASCII')
salt = 'salt'.encode('ASCII')
key_size = 32
data = "this is a test" * 100
data_bytes = data.encode('ASCII')
key = pprp.pbkdf2(passphrase, salt, key_size)
# Create a source from available data.
sg = pprp.data_source_gen(data_bytes)
# Feed the source into the encryptor.
eg = pprp.rijndael_encrypt_gen(key, sg)
# Feed the encryptor into the decryptor.
dg = pprp.rijndael_decrypt_gen(key, eg)
# Sink the output into an IO-stream.
decrypted = pprp.decrypt_sink(dg)
# self.assertEquals(data_bytes, decrypted)
```
## Notes
The generators can take a block-size in the event that you don't want the
default. The default block-size can also be changed via the PPRP_BLOCK_SIZE
environment variable.