git: cryptoapi - constify IV and pass-in IV length as well

[Michael Neumann]

commit df22c5bb39650210ea37d22ae42049c9a1f1d910
Author: Michael Neumann <mneumann at ntecs.de>
Date:   Sat Apr 19 18:43:45 2025 +0200

    cryptoapi - constify IV and pass-in IV length as well
    
    * This only affects XTS mode as CBC never mutated the IV.
    
    * Never pass-in data of unknown length.
    
    * In case of XTS, add a tweak to the contex, similar to what
      FreeBSD does.
    
    * Get rid of crypto_cipher_iv union type. simplify.
    
    * Also ensure that, in case we pass in a "too short" IV,
      we never read beyond the end of the passed-in IV. Zero-pad
      it in that case.

Summary of changes:
 sys/crypto/cryptoapi/cryptoapi.c | 172 +++++++++++++++++++++++----------------
 sys/crypto/cryptoapi/cryptoapi.h |  24 ++----
 2 files changed, 109 insertions(+), 87 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/df22c5bb39650210ea37d22ae42049c9a1f1d910


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