text: #ifndef OWCPA_H
  #define OWCPA_H
  
  #include "params.h"
  
  void PQCLEAN_NTRUHPS2048509_CLEAN_owcpa_samplemsg(unsigned char msg[NTRU_OWCPA_MSGBYTES],
          const unsigned char seed[NTRU_SEEDBYTES]);
  
  void PQCLEAN_NTRUHPS2048509_CLEAN_owcpa_keypair(unsigned char *pk,
          unsigned char *sk,
          const unsigned char seed[NTRU_SEEDBYTES]);
  
  void PQCLEAN_NTRUHPS2048509_CLEAN_owcpa_enc(unsigned char *c,
          const unsigned char *rm,
          const unsigned char *pk);
  
  int PQCLEAN_NTRUHPS2048509_CLEAN_owcpa_dec(unsigned char *rm,
          const unsigned char *ciphertext,
          const unsigned char *secretkey);
  #endif
  