int role, int direction,
int level,
uint16_t epoch,
+ unsigned char *secret,
+ size_t secretlen,
unsigned char *key,
size_t keylen,
unsigned char *iv,
int mactype,
const EVP_MD *md,
COMP_METHOD *comp,
+ const EVP_MD *kdfdigest,
BIO *prev,
BIO *transport,
BIO *next,