void bcal_cipher_free(bcgen_ctx_t* ctx);
void bcal_cipher_enc(void* block, const bcgen_ctx_t* ctx);
void bcal_cipher_dec(void* block, const bcgen_ctx_t* ctx);
void bcal_cipher_free(bcgen_ctx_t* ctx);
void bcal_cipher_enc(void* block, const bcgen_ctx_t* ctx);
void bcal_cipher_dec(void* block, const bcgen_ctx_t* ctx);