Change type of parameter for mbedtls_cipher_info_from_values

[Omcsesz]

Description

I thought it would be a good idea to change key_bitlen 's type to size_t because it can not take negative values, so no negative value interval is needed. The other thing is that in this way the code is MISRA compliant, which is important because this library is use in many safety critical applications.

PR checklist

Please tick as appropriate and edit the reasons (e.g.: "backport: not needed because this is a new feature")

• changelog provided, or not required
• backport not required
• tests not required

[gabor-mezei-arm]

Thank you for your contribution. Please write an appropriate description for this PR.

[Omcsesz]

Thank you for your contribution. Please write an appropriate description for this PR.

I added the description.

[gilles-peskine-arm]

Thanks, but since this is an API break, it'll have to wait until we start working on the next major version of Mbed TLS, likely early 2024.

[gilles-peskine-arm]

Thank you for writing this patch! Unfortunately, we could not take it at the time because it was an API break. We are now preparing the next major version of the library, and cipher.h will be removed from the API. Therefore this patch is no longer relevant.