PROV_CAST_CTX
PROV_CAST_CTX *ctx = (PROV_CAST_CTX *)vctx;
PROV_CAST_CTX *in = (PROV_CAST_CTX *)ctx;
PROV_CAST_CTX *ret;
PROV_CAST_CTX *bctx = (PROV_CAST_CTX *)ctx;
IMPLEMENT_CIPHER_HW_##UCMODE(mode, cast5, PROV_CAST_CTX, CAST_KEY, \