djcs_t.h

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#ifndef HCS_DJCS_T_H
#define HCS_DJCS_T_H

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

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    unsigned long i;    
    mpz_t si;           
} djcs_t_auth_server;

typedef struct {
    unsigned long s; 
    mpz_t *n;        
    mpz_t g;         
} djcs_t_public_key;

typedef struct {
    unsigned long s;    
    unsigned long w;    
    unsigned long l;    
    mpz_t *vi;          
    mpz_t *n;           
    mpz_t v;            
    mpz_t delta;        
    mpz_t d;            
    mpz_t p;            
    mpz_t ph;           
    mpz_t q;            
    mpz_t qh;           
    mpz_t m;            
    mpz_t nsm;          
} djcs_t_private_key;

djcs_t_public_key* djcs_t_init_public_key(void);

djcs_t_private_key* djcs_t_init_private_key(void);

void djcs_t_generate_key_pair(djcs_t_public_key *pk, djcs_t_private_key *vk,
        hcs_random *hr, const unsigned long s, const unsigned long bits,
        const unsigned long l, const unsigned long w);

void djcs_t_encrypt(djcs_t_public_key *pk, hcs_random *hr, mpz_t rop,
                    mpz_t plain1);

void djcs_t_reencrypt(djcs_t_public_key *pk, hcs_random *hr, mpz_t rop, mpz_t op);

void djcs_t_ep_add(djcs_t_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t plain1);

void djcs_t_ee_add(djcs_t_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t cipher2);

void djcs_t_ep_mul(djcs_t_public_key *pk, mpz_t rop, mpz_t cipher1, mpz_t plain1);

mpz_t* djcs_t_init_polynomial(djcs_t_private_key *vk, hcs_random *hr);

void djcs_t_compute_polynomial(djcs_t_private_key *vk, mpz_t *coeff, mpz_t rop,
                               const unsigned long x);

void djcs_t_free_polynomial(djcs_t_private_key *vk, mpz_t *coeff);

djcs_t_auth_server* djcs_t_init_auth_server(void);

void djcs_t_set_auth_server(djcs_t_auth_server *au, mpz_t si, unsigned long i);

void djcs_t_share_decrypt(djcs_t_private_key *vk, djcs_t_auth_server *au,
                          mpz_t rop, mpz_t cipher1);

void djcs_t_share_combine(djcs_t_private_key *vk, mpz_t rop, mpz_t *c);

void djcs_t_free_auth_server(djcs_t_auth_server *au);

void djcs_t_clear_public_key(djcs_t_public_key *pk);

void djcs_t_clear_private_key(djcs_t_private_key *vk);

void djcs_t_free_public_key(djcs_t_public_key *pk);

void djcs_t_free_private_key(djcs_t_private_key *vk);

#ifdef __cplusplus
}
#endif

#endif