pcs.h

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#ifndef HCS_PCS_H
#define HCS_PCS_H

#include <gmp.h>
#include "hcs_random.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    mpz_t n;        
    mpz_t g;        
    mpz_t n2;       
} pcs_public_key;

typedef struct {
    mpz_t p;        
    mpz_t q;        
    mpz_t p2;       
    mpz_t q2;       
    mpz_t hp;       
    mpz_t hq;       
    mpz_t lambda;   
    mpz_t mu;       
    mpz_t n;        
    mpz_t n2;       
} pcs_private_key;

pcs_public_key*  pcs_init_public_key(void);

pcs_private_key* pcs_init_private_key(void);

void pcs_generate_key_pair(pcs_public_key *pk, pcs_private_key *vk,
                           hcs_random *hr, const unsigned long bits);

void pcs_encrypt(pcs_public_key *pk, hcs_random *hr, mpz_t rop, mpz_t plain1);

void pcs_encrypt_r(pcs_public_key *pk, mpz_t rop, mpz_t plain1, mpz_t r);

void pcs_reencrypt(pcs_public_key *pk, hcs_random *hr, mpz_t rop, mpz_t op);

void pcs_ep_add(pcs_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t plain1);

void pcs_ee_add(pcs_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t cipher2);

void pcs_ep_mul(pcs_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t plain1);

void pcs_decrypt(pcs_private_key *vk, mpz_t rop, mpz_t cipher1);

void pcs_clear_public_key(pcs_public_key *pk);

void pcs_clear_private_key(pcs_private_key *vk);

void pcs_free_public_key(pcs_public_key *pk);

void pcs_free_private_key(pcs_private_key *vk);

int pcs_verify_key_pair(pcs_public_key *pk, pcs_private_key *vk);

char* pcs_export_public_key(pcs_public_key *pk);

char* pcs_export_private_key(pcs_private_key *vk);

int pcs_import_public_key(pcs_public_key *pk, const char *json);

int pcs_import_private_key(pcs_private_key *vk, const char *json);

#ifdef __cplusplus
}
#endif

#endif