-void camellia128_init(uint8_t* key, camellia128_ctx_t* s);
-void camellia128_enc(void* block, camellia128_ctx_t* s);
-void camellia128_dec(void* block, camellia128_ctx_t* s);
+void camellia128_init(const void* key, camellia128_ctx_t* s);
+void camellia128_enc(void* block, const camellia128_ctx_t* s);
+void camellia128_dec(void* block, const camellia128_ctx_t* s);