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  1. 0dae120 Disable unused Python 2 variant. am: f691762adf am: 3e9e7b7bd4 am: 5d1a46d6f5 am: a984a6de2c by Krzysztof Kosiński · 4 months ago main-16k-with-phones master
  2. a984a6d Disable unused Python 2 variant. am: f691762adf am: 3e9e7b7bd4 am: 5d1a46d6f5 by Krzysztof Kosiński · 4 months ago
  3. 5d1a46d Disable unused Python 2 variant. am: f691762adf am: 3e9e7b7bd4 by Krzysztof Kosiński · 4 months ago
  4. 3e9e7b7 Disable unused Python 2 variant. am: f691762adf by Krzysztof Kosiński · 4 months ago
  5. f691762 Disable unused Python 2 variant. by Krzysztof Kosiński · 4 months ago main-16k

Pure Python RSA implementation

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Python-RSA is a pure-Python RSA implementation. It supports encryption and decryption, signing and verifying signatures, and key generation according to PKCS#1 version 1.5. It can be used as a Python library as well as on the commandline. The code was mostly written by Sybren A. Stüvel.

Documentation can be found at the Python-RSA homepage. For all changes, check the changelog.

Download and install using:

pip install rsa

or download it from the Python Package Index.

The source code is maintained at GitHub and is licensed under the Apache License, version 2.0

Security

Because of how Python internally stores numbers, it is very hard (if not impossible) to make a pure-Python program secure against timing attacks. This library is no exception, so use it with care. See https://securitypitfalls.wordpress.com/2018/08/03/constant-time-compare-in-python/ for more info.

Major changes in 4.1

Version 4.0 was the last version to support Python 2 and 3.4. Version 4.1 is compatible with Python 3.5+ only.

Major changes in 4.0

Version 3.4 was the last version in the 3.x range. Version 4.0 drops the following modules, as they are insecure:

  • rsa._version133
  • rsa._version200
  • rsa.bigfile
  • rsa.varblock

Those modules were marked as deprecated in version 3.4.

Furthermore, in 4.0 the I/O functions is streamlined to always work with bytes on all supported versions of Python.

Version 4.0 drops support for Python 2.6 and 3.3.