PROV_CIPHER_HW_select
PROV_CIPHER_HW_select(mode) return &aes_##mode; \
PROV_CIPHER_HW_select() return &aes_generic_ocb;
PROV_CIPHER_HW_select(mode) return &camellia_##mode; \
PROV_CIPHER_HW_select(mode) return &sm4_##mode; \