void bcal_ctr_free(bcal_ctr_ctx_t *ctx);
void bcal_ctr_loadIV(const void *iv, bcal_ctr_ctx_t *ctx);
void bcal_ctr_encNext(void *block, bcal_ctr_ctx_t *ctx);
void bcal_ctr_decNext(void *block, bcal_ctr_ctx_t *ctx);
void bcal_ctr_free(bcal_ctr_ctx_t *ctx);
void bcal_ctr_loadIV(const void *iv, bcal_ctr_ctx_t *ctx);
void bcal_ctr_encNext(void *block, bcal_ctr_ctx_t *ctx);
void bcal_ctr_decNext(void *block, bcal_ctr_ctx_t *ctx);