Secure Source of Randomness

[pixeebot[bot]]

This codemod replaces all instances of functions in the random module (e.g. random.random() with their, much more secure, equivalents from the secrets module (e.g. secrets.SystemRandom().random()).

There is significant algorithmic complexity in getting computers to generate genuinely unguessable random bits. The random.random() function uses a method of pseudo-random number generation that unfortunately emits fairly predictable numbers.

If the numbers it emits are predictable, then it's obviously not safe to use in cryptographic operations, file name creation, token construction, password generation, and anything else that's related to security. In fact, it may affect security even if it's not directly obvious.

Switching to a more secure version is simple and the changes look something like this:

- import random
+ import secrets
  ...
- random.random()
+ secrets.SystemRandom().random()

More reading

* [https://owasp.org/www-community/vulnerabilities/Insecure_Randomness](https://owasp.org/www-community/vulnerabilities/Insecure_Randomness) * [https://docs.python.org/3/library/random.html](https://docs.python.org/3/library/random.html)

I have additional improvements ready for this repo! If you want to see them, leave the comment:

@pixeebot next

... and I will open a new PR right away!

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Feedback | Community | Docs | Codemod ID: pixee:python/secure-random

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[git-greetings[bot]]

Thanks @pixeebot[bot] for opening this PR!

For COLLABORATOR only :

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[pep8speaks]

Hello @pixeebot[bot]! Thanks for opening this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file IBF-Typhoon-model/documentation/notebooks/classification_model.py:

Line 122:80: E501 line too long (90 > 79 characters) Line 127:80: E501 line too long (119 > 79 characters) Line 520:80: E501 line too long (90 > 79 characters) Line 525:80: E501 line too long (119 > 79 characters)

• In the file IBF-Typhoon-model/documentation/notebooks/regression_model.py:

Line 114:80: E501 line too long (90 > 79 characters) Line 119:80: E501 line too long (119 > 79 characters)

• In the file IBF-Typhoon-model/models/utility_functions/unweighted_random.py:

Line 6:80: E501 line too long (90 > 79 characters)

• In the file IBF-Typhoon-model/models/utility_functions/weighted_random.py:

Line 6:80: E501 line too long (119 > 79 characters)

• In the file IBF-Typhoon-model/src/climada/test/test_OSM_unit.py:

Line 146:80: E501 line too long (110 > 79 characters) Line 148:80: E501 line too long (113 > 79 characters) Line 163:80: E501 line too long (103 > 79 characters)

• In the file IBF-Typhoon-model/src/climada/test/test_osm.py:

Line 64:80: E501 line too long (114 > 79 characters) Line 77:80: E501 line too long (98 > 79 characters) Line 80:80: E501 line too long (117 > 79 characters) Line 84:80: E501 line too long (99 > 79 characters) Line 95:80: E501 line too long (123 > 79 characters) Line 98:80: E501 line too long (115 > 79 characters) Line 102:80: E501 line too long (98 > 79 characters) Line 154:80: E501 line too long (103 > 79 characters)

[git-greetings[bot]]

PR Details of @pixeebot[bot] in Typhoon-Impact-based-forecasting-model :	OPEN	CLOSED	TOTAL
1	14	15