Update digsig_asymmetric.c

[Elyrial]

Using snprintf instead of sprintf can help prevent buffer overflows

[admsev]

@gooroodev please explain

[gooroodev]

Thank you for tagging me, @admsev!

{mistakes: 0, typos: 0, security: 0, performance: 0, code_styling: 0, others: 0}

1. Summary of Changes:

   • The sprintf function has been replaced with snprintf in the request_asymmetric_key function to ensure buffer overflow protection.

2. Issues, Bugs, or Typos:

   • No issues, bugs, or typos found.

3. General Review of Code Quality and Style:

   • The change from sprintf to snprintf improves security by preventing potential buffer overflows.
   • The code is well-structured and follows common practices for error handling and logging.

4. Suggestions:

   • No additional suggestions are necessary as the change improves security without introducing any new issues.

The code change is appropriate and enhances the security of the function by using snprintf to prevent buffer overflows. No further improvements are needed.

Yours, Gooroo.dev. Feel free to react or reply to this review!