-void cast5_init(cast5_ctx_t* s, uint8_t* key, uint8_t keylength);
-void cast5_enc(cast5_ctx_t *s, void* block);
-void cast5_dec(cast5_ctx_t *s, void* block);
+void cast5_init(uint8_t* key, uint8_t keylength_b, cast5_ctx_t* s);
+void cast5_enc(void* block, cast5_ctx_t *s);
+void cast5_dec(void* block, cast5_ctx_t *s);