-void rsa_enc(bigint_t* data, rsa_publickey_t* key);
-uint8_t rsa_dec(bigint_t* data, rsa_privatekey_t* key);
-void rsa_os2ip(bigint_t* dest, const void* data, uint32_t length_B);
-void rsa_i2osp(void* dest, bigint_t* src, uint16_t* out_length_B);
+void rsa_enc(bigint_t *data, const rsa_publickey_t *key);
+uint8_t rsa_dec(bigint_t *data, const rsa_privatekey_t *key);
+void rsa_os2ip(bigint_t *dest, const void *data, uint32_t length_B);
+void rsa_i2osp(void *dest, bigint_t *src, uint16_t *out_length_B);