Fix carry overflow in Stribog in 512-bit addition
* cipher/stribog.c (transform_bits): properly calculate carry flag * tests/basic.c (check_digests): add two more test cases
Cherry pick the master commit of:
da6cd4fea30f79cf9d8f9b2f1c6daf3aea39fa9c
- Reported-by: Guido Vranken
- Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>