9 Feb
2011
9 Feb
'11
11:30 p.m.
I looked at recent GCM code and noticed this:
/* FIXME: Should use const for the cipher context. Then needs const for nettle_crypt_func, which also rules out using that abstraction for arcfour. */ void gcm_set_key(struct gcm_key *key, void *cipher, nettle_crypt_func *f);
However GCM (like CCM) is only specified for block ciphers, and further, only for 128-bit block ciphers. Thus I wonder if avoiding use of const just to let the abstraction support a stream cipher is wise?
/Simon