[Snyk] Security upgrade cryptography from 2.9.2 to 49.0.0

[snyk-io]

Snyk has created this PR to fix 2 vulnerabilities in the pip dependencies of this project.

Snyk changed the following file(s):

• tested_requirements/requirements_37.txt

Breaking Change Risk

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[snyk-io]

This is an extremely large major version upgrade, from 2.9.2 to 49.0.0, and contains numerous significant breaking changes. A direct upgrade is not feasible and will require a significant migration effort.

Key Breaking Changes:

• Build & Installation:

  • Rust is now a mandatory build dependency. Starting with version 3.5, a Rust toolchain is required to build cryptography from source. While pre-compiled wheels are available for most common platforms (which include the Rust components), this is a major change for environments that build from source or use less common architectures.
  • The method for linking against a custom OpenSSL version changed in v40.0.0. Environment variables like CFLAGS and LDFLAGS are no longer used.

• Python Version Support:

  • Version 2.9.2 supported Python 2.7 and 3.5+.
  • Version 49.0.0 requires Python 3.9 or later. Support for Python 3.6, 3.7, and 3.8 was dropped in intermediate versions.

• OpenSSL Dependency:

  • Version 2.9.2 deprecated OpenSSL 1.0.1 and worked with 1.1.1.
  • Version 49.0.0 requires OpenSSL 3.0.0 or later. Support for OpenSSL 1.1.x was removed in v47.0.0.

• API Removals and Changes:

  • Numerous deprecated functions and modules have been removed across dozens of major versions. This includes unsafe or outdated algorithms like binary elliptic curves (removed in v47.0.0) and ciphers like CAST5, SEED, IDEA, and Blowfish (moved to a decrepit module and later removed).
  • Support for 32-bit Windows and x86_64 macOS has been removed in favor of 64-bit and arm64, respectively.
  • The dependency on asn1crypto was removed.

Recommendation:

This upgrade cannot be performed directly. It should be treated as a major project involving:

1. Upgrading your runtime environment (Python, OpenSSL).
2. Ensuring your build environment has a compatible Rust toolchain if you build from source.
3. Performing a careful, incremental upgrade of cryptography (e.g., 2.x -> 3.x -> ...), addressing deprecation warnings and breaking changes at each major step.
4. Thoroughly auditing your code for usage of removed APIs and replacing them with modern alternatives provided by the library.

Source: Cryptography Changelog

Notice 🤖: This content was augmented using artificial intelligence. AI-generated content may contain errors and should be reviewed for accuracy before use.

[snyk-io]

⛔ Snyk checks have failed. 1 issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (1)
⛔	Open Source Security	0	1	0	0	1 issues
✅	Licenses	0	0	0	0	0 issues

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