Mailman 3 February 2023 - Cryptography-dev

Cryptography Wheel Files for Python 3.8
by Manish Gupta Feb. 17, 2023

Feb. 17, 2023

Hello Team, I am looking for wheel files for the Cryptography package. Can you help me which release is this included in . Many thanks in advance for your help. Regards, Manish

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PyCA cryptography 39.0.1 released
by Paul Kehrer Feb. 8, 2023

Feb. 8, 2023

PyCA cryptography 39.0.1 has been released to PyPI. cryptography includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, asymmetric algorithms, message digests, X509, key derivation functions, and much more. We support Python 3.6+, and PyPy3. Changelog (https://cryptography.io/en/latest/changelog/#v39-0-1) * SECURITY ISSUE - Fixed a bug where Cipher.update_into accepted Python buffer protocol objects, but allowed immutable buffers. CVE-2023-23931 * Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.0.8. -Paul Kehrer (reaperhulk)

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AES-CTR with 256 bit keys
by Arshad Khan Feb. 3, 2023

Feb. 3, 2023

Hello I have a question regarding AES in python cryptography which uses a block size of 128 bits. Currently I am using 256 bit keys with AES in CTR mode. However, internally the python cryptography uses a block size of 128. My understanding is that block size and key size are the same for symmetric encryption. How does a 256 bits key work in this case? Appreciate if someone could provide some explanation about this and clear my confusion. Thanks Arshad

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