Paul,

I note in the changelog that CFB is being moved to deprecated.

Please review the use of CFB for "encrypt in place" for UAS Remote ID Operator PII privacy:

https://datatracker.ietf.org/doc/draft-moskowitz-drip-operator-privacy/

Operator Privacy is being added into the next revision of ASTM F3411 Remote ID and my draft is the only one put forward to provide this functionality.

I don't know if this is enough to sway the move to drop CFB, as I do not know how Operator Privacy will be implemented over the next couple years.

But a "heads up" to one valuable use of CFB.

Thank you

Robert Moskowitz

On 1/27/26 7:34 PM, Paul Kehrer via Cryptography-dev wrote:
PyCA cryptography 46.0.4 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, X.509, key derivation functions, and much more. We support Python 3.8+, and PyPy3 3.11.

Changelog (https://cryptography.io/en/latest/changelog/#v46-0-4)
* Dropped support for win_arm64 wheels.
* Updated Windows, macOS, and Linux wheels to be compiled with OpenSSL 3.5.5.

-Paul Kehrer (reaperhulk)

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