void main(void){
int i =0;
int j =0;
int bits = 128;
paillier_prvkey_t* prvkey;
paillier_pubkey_t* pubkey;
char* my_str = "cookies";
char* my_str2;
char* my_pubkey;
char* my_prvkey;
paillier_plaintext_t* my_plain_txt;
paillier_plaintext_t* my_plain_txt2;
paillier_ciphertext_t* my_enc_txt;
void* my_enc_export[128];
my_plain_txt = paillier_plaintext_from_str(my_str);
paillier_keygen( bits, &pubkey, &prvkey, &paillier_get_rand_devurandom);
my_enc_txt = paillier_enc(NULL, pubkey, my_plain_txt, &paillier_get_rand_devurandom);
my_plain_txt2 = paillier_dec(NULL, pubkey, prvkey, my_enc_txt);
my_str2 = paillier_plaintext_to_str(my_plain_txt2);
my_pubkey = paillier_pubkey_to_hex( pubkey );
my_prvkey = paillier_prvkey_to_hex( prvkey );
printf("my pub key is : %s\n", my_pubkey);
printf("my prv key is : %s\n", my_prvkey);
return;
}
int main(int argc, char **argv) {
FILE *fpairing, *ftag, *fdata, *fresult, *fplain, *fkey, *fcipher, *fpub;
pairing_t pairing;
paillier_pubkey_t *pub;
paillier_prvkey_t *priv;
element_t g, h, u, sig1, sig2, sig3, temp_pow, m, g1, g2;
element_t public_key, tag, tag_prod;
element_t secret_key;
paillier_get_rand_t get_rand;
paillier_ciphertext_t *cipher1, *cipher2;
paillier_plaintext_t *plain1, *plain2;
mpz_t pub_n, a, b, data2, nsquare;
int count = 0, val=5;
pairing_init_set_str(pairing, param_str);
//mpz_init_set_str(data_sum, "0", 10);
plain1 = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
plain2 = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
cipher1 = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
cipher2 = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
//pbc_demo_pairing_init(pairing, argc, argv);
element_init_G1(g1, pairing);
element_init_G1(g2, pairing);
element_init_G2(g, pairing);
element_init_G2(public_key, pairing);
element_init_G1(u, pairing);
element_init_G1(temp_pow, pairing);
element_init_G2(public_key, pairing);
element_init_G1(h, pairing);
element_init_G1(m, pairing);
element_init_G1(sig1, pairing);
element_init_G1(sig2, pairing);
element_init_G1(sig3, pairing);
element_init_G1(tag, pairing);
element_init_G1(tag_prod, pairing);
element_init_Zr(secret_key, pairing);
// mpz_init(pub_n);
char *len;
mpz_init(a);
mpz_init(b);
mpz_init(data2);
printf("Short signature test\n");
len = (char *)malloc(2048*sizeof(char));
if((fpub = fopen("pub.txt", "r")))
{
pub = (paillier_pubkey_t*) malloc(sizeof(paillier_pubkey_t));
priv = (paillier_prvkey_t*) malloc(sizeof(paillier_prvkey_t));
mpz_init(pub->n_squared);
mpz_init(pub->n);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->p, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->q, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->n_plusone, len, 10);
//printf("value of nplusone : \n");
//mpz_out_str(stdout, 10, pub->n_plusone);
paillier_keygen(&pub, &priv, get_rand, 0);
pub->bits = mpz_sizeinbase(pub->n, 2);
fclose(fpub);
}
//setting already known pairing parameters
if((fpairing = fopen("pairing.txt", "r")))
{
fgets(len, 1000, fpairing);
//printf("\n %s\n", len);
element_set_str(g, len, 10);
//element_printf(" g = %B\n", g);
fgets(len, 1000, fpairing);
//printf("\n %s\n", len);
element_set_str(u, len, 10);
//element_printf("\n u= %B\n", u);
fgets(len, 1000, fpairing);
element_set_str(secret_key, len, 10);
//element_printf(" secretkey %B\n",secret_key);
fgets(len, 1000, fpairing);
element_set_str(public_key, len, 10);
//element_printf(" publickey %B\n", public_key);
fgets(len, 1000, fpairing);
element_set_str(h, len, 10);
//element_printf(" \nh = %B\n", h);
fgets(len, 1000, fpairing);
mpz_init_set_str(pub_n, len, 10);
//printf("\n n = ");
//mpz_out_str(stdout, 10, pub_n);
fclose(fpairing);
}
element_set1(tag_prod);
ftag = fopen("./tag/output5.txt", "r");
fgets(len, 1000, ftag);
element_set_str(g1, len, 10);
element_printf("\ng1 = %B\n", g1);
fclose(ftag);
ftag = fopen("./tag/output6.txt", "r");
fgets(len, 1000, ftag);
element_set_str(g2, len, 10);
element_printf("\ng2 = %B\n", g2);
fclose(ftag);
fplain = fopen("./split/output5.txt", "r");
fgets(len, 1000, fplain);
// printf("\nlen %s", len);
mpz_set_str(a, len, 10);
//element_printf("\na = %Zd\n", a);
fclose(fplain);
fplain = fopen("./split/output6.txt", "r");
fgets(len, 1000, fplain);
mpz_set_str(b, len, 10);
fcipher = fopen("./cipher/copy1/output5.txt", "r");
fgets(len, 1000, fcipher);
mpz_init_set_str(cipher1->c, len, 10);
fclose(fcipher);
fcipher = fopen("./cipher/copy1/output6.txt", "r");
fgets(len, 1000, fcipher);
mpz_init_set_str(cipher2->c, len, 10);
fclose(fcipher);
paillier_mul(pub, cipher2, cipher2, cipher1);
plain1 = paillier_dec(plain1, pub, priv, cipher2);
//tag
mpz_t an;
mpz_init(an);
mpz_init(nsquare);
// mpz_mul(an, a, pub_n);
mpz_mul(nsquare, pub_n, pub_n);
element_pow_mpz(temp_pow,u, plain1->m);
element_mul(temp_pow, temp_pow, h);
element_pow_zn(sig1, temp_pow, secret_key);
element_printf("\n signature of plain = %B\n", sig1);
//mpz_mul(an, b, pub_n);
// mpz_mul(nsquare, pub_n, pub_n);
element_pow_mpz(temp_pow,u, b);
element_mul(temp_pow, temp_pow, h);
element_pow_zn(sig2, temp_pow, secret_key);
element_printf("\n signature of b = %B\n", sig2);
//element_printf("\nb = %Zd\n", b);
fclose(fplain);
mpz_add(a, a, b);
// mpz_mod(a, a, pub_n);
// mpz_mul(a, a, pub_n);
// mpz_mod(a, a, nsquare);
count = 2;
element_pow_mpz(temp_pow,u, a);
mpz_set_ui(data2, count);
// itoa(count, len, 10);+
//element_printf(" \nh = %B\n", h);
element_pow_mpz(h, h, data2);
element_mul(temp_pow, temp_pow, h);
//element_printf("\n h. u^bN = %B\n", temp_pow);
element_pow_zn(sig3, temp_pow, secret_key);
element_printf("\n sig 3 %B\n", sig3);
element_mul(g2, g2, g1);
element_printf("\n Direct Product %B\n", g2);
element_mul(sig2, sig1, sig2);
element_printf("\n Direct Product %B\n", sig2);
return 0;
}
int main (int argc, char** argv)
{
paillier_pubkey_t* pkey;
paillier_prvkey_t* skey;
paillier_keygen(128,&pkey,&skey,&paillier_get_rand_devrandom);
void *context = zmq_ctx_new ();
struct opts options;
parse_options(argc,argv, &options);
if(options.size <= 0 || options.scale <= 0 || !options.fileset){
fprintf(stderr,"Size and scale must be greater than 0 and file must be set\n");
exit(EXIT_FAILURE);
}
struct classify_data data;
data.pub = pkey;
data.prv = skey;
data.maxcol = options.size;
data.scale_factor = options.scale;
data.texts = (paillier_plaintext_t**)malloc(options.size*sizeof(paillier_plaintext_t*));
data.col = 0;
data.correct = 0;
data.total = 0;
init_rand(data.rand,&paillier_get_rand_devurandom,pkey->bits / 8 + 1);
// Socket to talk to server
gmp_printf("n: %Zd, lambda: %Zd\n",pkey->n,skey->lambda);
void *requester = zmq_socket (context, ZMQ_REQ);
zmq_connect (requester, "ipc:///tmp/karma");
char* pubkeyhex = paillier_pubkey_to_hex(pkey);
s_send(requester,pubkeyhex);
char* recv = s_recv(requester);
free(recv);
free(pubkeyhex);
data.socket = requester;
char* file = options.file;
FILE* fp;
struct csv_parser p;
char buf[1024];
size_t bytes_read;
if(csv_init(&p,0)) {
fprintf(stderr, "Failed to initialize parser\n");
exit(EXIT_FAILURE);
}
fp = fopen(file,"rb");
if(!fp){
fprintf(stderr,"Failed to open classify file %s\n",strerror(errno));
exit(EXIT_FAILURE);
}
while ((bytes_read=fread(buf,1,1024,fp)) > 0){
if(!csv_parse(&p,buf,bytes_read,field_parsed,row_parsed,&data)){
fprintf(stderr, "Failed to parse file: %s\n",csv_strerror(csv_error(&p)));
}
}
csv_fini(&p,field_parsed,row_parsed,&data);
//fini took care of freeing the plaintexts
csv_free(&p);
free(data.texts);
gmp_randclear(data.rand);
printf("Correct(%i)/Total(%i) = %f\n",data.correct,data.total,data.correct/(data.total+0.0));
sleep (2);
zmq_close (requester);
zmq_ctx_destroy (context);
return 0;
}
void test_comparison()
{
Log::i("(Test) # Test: Comparison");
// questions
Log::i("(Test) - Questions");
std::set<Question> questions;
for (int i = 0; i < Helper::GenerateRandom(10) + 2; i++)
{
Question q("Question #" + std::to_string(i));
questions.insert(q);
}
test_generic(questions);
// keys
Log::i("(Test) - Keys");
std::set<CKeyID> keys;
for (int i = 0; i < Helper::GenerateRandom(10) + 2; i++)
{
SignKeyPair skp;
SignKeyStore::genNewSignKeyPair(static_cast<Role>(Helper::GenerateRandom(4)), skp);
keys.insert(skp.second.GetID());
SignKeyStore::removeSignKeyPair(skp.second.GetID());
}
test_generic(keys);
// encrypted ballots
Log::i("(Test) - Encrypted Ballots");
std::set<EncryptedBallot> eballots;
std::set<TalliedBallots> tballots;
int nTrustees = 4;
paillier_pubkey_t* publicKey = NULL;
paillier_partialkey_t** privateKeys = NULL;
paillier_keygen(256, nTrustees, nTrustees, &publicKey, &privateKeys, paillier_get_rand_devurandom);
for (int i = 0; i < Helper::GenerateRandom(2) + 2; i++)
{
PLAINTEXT_SELECTION choice = PLAINTEXT_SELECTION::FIRST;
if (Helper::GenerateRandom() > 0.5)
choice = PLAINTEXT_SELECTION::SECOND;
paillier_ciphertext_proof_t* cipher = paillier_enc_proof(publicKey, choice, paillier_get_rand_devurandom, NULL);
EncryptedBallot ballot;
ballot.questionID = Helper::GenerateRandom160();
ballot.answer = cipher;
eballots.insert(ballot);
int j = Helper::GenerateRandom(nTrustees - 1);
paillier_partialdecryption_proof_t* proof = paillier_dec_proof(publicKey, privateKeys[j], cipher, paillier_get_rand_devurandom, NULL);
TalliedBallots ballots;
ballots.questionID = Helper::GenerateRandom160();
ballots.answers = proof;
tballots.insert(ballots);
}
test_generic(eballots);
Log::i("(Test) - Tallied Ballots");
test_generic(tballots);
paillier_freepubkey(publicKey);
paillier_freepartkeysarray(privateKeys, nTrustees);
BOOST_FOREACH(EncryptedBallot b, eballots)
paillier_freeciphertextproof(b.answer);
BOOST_FOREACH(TalliedBallots b, tballots)
paillier_freepartdecryptionproof(b.answers);
}
int main(int argc, char *argv[])
{
DIR *d;
FILE *fpub, *fciph, *fplain, *fprod, *fkey;
paillier_pubkey_t *pub;
paillier_plaintext_t *plain, *plain_sum, *plain_temp;
paillier_prvkey_t *priv;
paillier_get_rand_t get_rand;
paillier_ciphertext_t *cipher, *cipher_prod, *cipher_total;
int count = 0, count1=0, val = 163000, no_of_copies = 10;
long int key_int, key_int1, key_rnd;
struct dirent *dir;
char* len;
mpz_t rndKey, randNum, rnd,rnd_sum, rndno, sum, pl_sum; /* Hold our random numbers */
mpz_t rndBnd; /* Bound for mpz_urandomm */
mpz_t key, key1; //key for PRF
mpz_t plain_total, plain_nomod;
gmp_randstate_t gmpRandState, gmpRandState1, gmpRandState2; /* Random generator state object */
mpz_init(sum);
mpz_init(pl_sum);
mpz_init(rnd);
mpz_init(rndno);
mpz_init(rndBnd);
mpz_init(randNum);
mpz_init(key);
mpz_init(key1);
mpz_init(rnd_sum);
mpz_init(plain_total);
mpz_init(rnd);
mpz_init(rndKey);
mpz_init(plain_nomod);
mpz_set_ui(plain_total, 0);
plain = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
plain_sum = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
plain_temp = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
cipher_prod = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
cipher_total = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
cipher = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
len = (char *)malloc(2048*sizeof(char));
//mpz_init(cipher_prod->c);
mpz_init(cipher_total->c);
mpz_set_ui(rnd_sum, 0);
mpz_init_set_str(cipher_prod->c, "1", 10);
mpz_init_set_str(cipher_total->c, "1", 10);
mpz_init_set_str(plain_sum->m, "0", 10);
// printf("\nloading pailler keys");
if((fpub = fopen("pub.txt", "r")))
{
pub = (paillier_pubkey_t*) malloc(sizeof(paillier_pubkey_t));
priv = (paillier_prvkey_t*) malloc(sizeof(paillier_prvkey_t));
mpz_init(pub->n_squared);
mpz_init(pub->n);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->p, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->q, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->n_plusone, len, 10);
//printf("value of nplusone : \n");
//mpz_out_str(stdout, 10, pub->n_plusone);
paillier_keygen(&pub, &priv, get_rand, 0);
pub->bits = mpz_sizeinbase(pub->n, 2);
fclose(fpub);
}
gmp_randinit_default(gmpRandState);
mpz_set_str(rndBnd, "163000", 10);
mpz_set_ui(rndKey, time(NULL));
gmp_randseed(gmpRandState, rndKey);
fkey = fopen("prf_key.txt", "w");
mpz_urandomm(rndno, gmpRandState, pub->n);
mpz_set(key, rndno);
element_fprintf(fkey, "%Zd\n", key);
mpz_urandomm(rndno, gmpRandState, pub->n);
mpz_set(key1, rndno);
element_fprintf(fkey, "%Zd", key1);
fclose(fkey);
gmp_randseed(gmpRandState, key);
//mpz_out_str(stdout, 10, rnd);
//****Opening files to read files and encrypt*****
int i, j;
mpz_t rand_val[val], rand_init[no_of_copies], mpz_result[no_of_copies];
char fileName[1000], file[1000];
//strcpy(fileName, "./cipher/copy3/output");
mpz_set_str(sum, "0", 10);
mpz_set_str(pl_sum, "0", 10);
for(j =0; j < no_of_copies; j++)
{
mpz_init(rand_init[j]);
mpz_urandomm(rand_init[j], gmpRandState, pub->n);
mpz_add(sum, sum, rand_init[j]);
// mpz_mod(sum, sum, pub->n);
//printf("\n 1st rand \n");
//mpz_out_str(stdout, 10, rand_init[j]);
}
// printf("\nsum\n");
// mpz_out_str(stdout, 10, sum);
mpz_set_str(pl_sum, "0", 10);
gmp_randseed(gmpRandState, key1);
for(j =0; j < no_of_copies; j++)
{
mpz_set_ui(cipher_prod->c, 1);
for(i = 0; i < val; i++)
{
sprintf(fileName, "./cipher/copy%d/output", (j+1));
if(j == 0)
{
do
mpz_urandomm(randNum, gmpRandState, rndBnd);
while(mpz_cmp_ui(randNum,0) ==0);
mpz_init(rand_val[i]);
mpz_set(rand_val[i], randNum);
//printf("\n2ndrand\n");
//mpz_out_str(stdout, 10, randNum);
// printf("random\n");
// mpz_out_str(stdout, 10, rand_val[i]);
}
else
{
mpz_set(randNum, rand_val[i]);
}
// sprintf(num, "output%d.txt", (j+1));
mpz_get_str(file, 10, randNum);
strcat(fileName, file);
strcat(fileName,".txt");
count = 0;
// printf("\n%s", fileName);
//mpz_out_str(stdout, 10, randNum);
if(!(fciph = fopen(fileName, "r")))
{
printf("\n not able to read %s", fileName);
// fputs("not possible to read file!\n", stderr);
}
else
{
fgets(len, 1000, fciph);
mpz_init_set_str(cipher->c, len, 10);
//if(strstr(dir->d_name, "output") != NULL)
//{
// printf("\ncipher\n");
//mpz_out_str(stdout, 10, cipher->c);
paillier_mul(pub, cipher_prod, cipher_prod, cipher);
// printf("\ncipher after product\n");
//mpz_out_str(stdout, 10, cipher_prod->c);
//}
fclose(fciph);
}
if(j == 0)
{
strcpy(fileName, "./split/output");
strcat(fileName, file);
strcat(fileName,".txt");
if(!(fplain = fopen(fileName, "r")))
{
printf("\n not read %s", fileName);
count1++;
}
else
{
fgets(len, 1000, fplain);
// printf("\npleain sum\n");
// mpz_out_str(stdout, 10, plain_sum->m);
mpz_init_set_str(plain->m, len, 10);
// if(strstr(dir->d_name, "output") != NULL)
//{
mpz_add(plain_sum->m, plain_sum->m, plain->m);
//mpz_mod(pla in_sum->m, plain_sum->m, pub->n);
//}
fclose(fplain);
}
}
}
mpz_powm(cipher_prod->c, cipher_prod->c, rand_init[j], pub->n_squared);
paillier_mul(pub, cipher_total, cipher_total, cipher_prod);
mpz_mul(plain_temp->m, plain_sum->m, rand_init[j]);
mpz_add(plain_total, plain_total, plain_temp->m);
mpz_mod(plain_total, plain_total, pub->n);
}
plain = paillier_dec(plain, pub, priv, cipher_total);
printf("\n decrypt \n");
mpz_out_str(stdout, 10, plain->m);
// printf("\n plain total \n");
//mpz_out_str(stdout, 10, plain_total);
printf("\n plain text total\n");
mpz_out_str(stdout, 10, plain_sum->m);
mpz_mul(pl_sum, plain_sum->m, sum);
mpz_mul(pl_sum, pl_sum, pub->n);
mpz_mul(pl_sum, pl_sum, priv->lambda);
// mpz_mod(pl_sum, pl_sum, pub->n);
printf("\n plain text * rnd\n");
mpz_out_str(stdout, 10, pl_sum);
if((fprod = fopen("result/cipher_result.txt", "w")))
{
printf("\nWriting the result to file \n");
gmp_fprintf(fprod, "%Zd\n", cipher_total->c);
fclose(fprod);
}
return 0;
}
int main(int argc, char *argv[])
{
///list all the files in the directory///
DIR *d;
FILE *fpub, *fpriv, *fciph, *fplain, *ftag, *fpairing, *ftemp, *frand;//, *fp6, *fp7;
paillier_pubkey_t *pub;
paillier_prvkey_t *priv;
paillier_get_rand_t get_rand;
paillier_plaintext_t *plain;
paillier_ciphertext_t *cipher, *cipher_copy;
paillier_tag* tag;
mpz_t tag_sig, *rand_prf;
gmp_randstate_t rand;
char *len;
struct stat st= {0};
unsigned char *data;
int count=0, count1=0, gbytes, n, no_copies=10;
struct dirent *dir;
///pairing parameters
pairing_t pairing;
//pairing_t p;
//printf("setting pairing parameters\n");
//pairing_init_set_str(pairing, param_str);
// printf("after pairing setup\n");
element_t g, h, u, temp_pow, test1, test2;
element_t public_key, sig;
element_t secret_key;
///end of pairing parameters
//initialize pairing parametrs
pbc_demo_pairing_init(pairing, argc, argv);
element_init_G2(g, pairing);
element_init_G1(u, pairing);
element_init_G1(test1, pairing);
element_init_G2(test2, pairing);
element_init_G1(temp_pow, pairing);
element_init_G2(public_key, pairing);
// element_from_hash(h, "hashofmessage", 13);
element_init_G1(h, pairing);
element_init_G1(sig, pairing);
element_init_Zr(secret_key, pairing);
//end of pairing parameters initialization
//set up pairing parameters
//generate system parameters
element_random(g);
// n = pairing_length_in_bytes_x_only_G1(pairing);
// data = pbc_malloc(n);
// gbytes = pairing_length_in_bytes_G2(pairing);
// printf(" \n g in bytes %d \n", gbytes);
// element_printf("system parameter g = %B\n", g);
//generate private key
element_random(secret_key);
//generate u
element_random(u);
//calculating hash of a file name and mapping it to element in group G1
// element_from_hash(h, "FileName", 8);
element_random(h);
//element_printf("private key = %B\n", secret_key);
//compute corresponding public key
element_pow_zn(public_key, g, secret_key);
//element_printf("public key = %B\n", public_key);
//end of setup
tag = (paillier_tag*) malloc(sizeof(paillier_tag));
plain = (paillier_plaintext_t*) malloc(sizeof(paillier_plaintext_t));
cipher = (paillier_ciphertext_t*) malloc(sizeof(paillier_ciphertext_t));
mpz_init(plain->m);
mpz_init(tag->t);
mpz_init(cipher->c);
mpz_init(tag_sig);
rand_prf = (mpz_t*) malloc(n*sizeof(mpz_t));
len = (char *)malloc(2048*sizeof(char));
//****paillier key generation****
if(!(fpub = fopen("pub.txt", "r")))
{
//fputs("Not able to read public key file!\n", stderr);
paillier_keygen(&pub, &priv, get_rand,450);
//fclose(fpub);
fpub = fopen("pub.txt", "w");
gmp_fprintf(fpub, "%Zd\n", pub->p);
gmp_fprintf(fpub, "%Zd\n", pub->q);
gmp_fprintf(fpub, "%Zd\n", pub->n_plusone);
//***Writing private keys into a file***
fpriv = fopen("priv.txt", "w");
gmp_fprintf(fpriv, "%Zd\n", priv->lambda);
gmp_fprintf(fpriv, "%Zd\n", priv->x);
fclose(fpriv);
//****End of writing private key in a file***
}
else
{
printf("\n in else");
pub = (paillier_pubkey_t*) malloc(sizeof(paillier_pubkey_t));
priv = (paillier_prvkey_t*) malloc(sizeof(paillier_prvkey_t));
mpz_init(pub->n_squared);
mpz_init(pub->n);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->p, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->q, len, 10);
fgets(len, 1000, fpub);
mpz_init_set_str(pub->n_plusone, len, 10);
//printf("value of nplusone : \n");
//mpz_out_str(stdout, 10, pub->n_plusone);
paillier_keygen(&pub, &priv, get_rand, 0);
pub->bits = mpz_sizeinbase(pub->n, 2);
}
fclose(fpub);
//****end of paillier key generation****
//printf("writing pairing parameters to a file\n");
//writing pairing keys to file
fpairing = fopen("pairing.txt", "w");
/* n = pairing_length_in_bytes_compressed_G2(pairing);
data = pbc_malloc(n);
element_to_bytes_compressed(data, g);
element_printf(" decomp g %B\n", g);
element_from_bytes_compressed(test2, data);
element_printf(" decomp g %B\n", test2); */
//writing compressed g to file
element_fprintf(fpairing, "%B\n", g);
// element_printf(" g = %B\n", g);
/*n = pairing_length_in_bytes_compressed_G1(pairing);
data = pbc_malloc(n);
element_to_bytes_compressed(data, u);
element_printf(" decomp g %B\n", u);
element_from_bytes_compressed(test1, data);
element_printf(" decomp g %B\n", test1);
//writing compressed u to file */
element_fprintf(fpairing, "%B\n", u);
//element_printf(" u = %B\n", u);
//writing secret key to file
element_fprintf(fpairing, "%B\n", secret_key);
//element_printf(" sk = %B\n", secret_key);
// printf("secret key = %s\n",secret_key);
/* n = pairing_length_in_bytes_compressed_G2(pairing);
data = pbc_malloc(n);
element_to_bytes_compressed(data, public_key);
//writing compressed public key to file */
element_fprintf(fpairing, "%B\n", public_key);
//element_printf("pk = %B\n", public_key);
/* n = pairing_length_in_bytes_compressed_G1(pairing);
data = pbc_malloc(n);
element_to_bytes_compressed(data, h);
element_printf(" decomp g %B\n", h);
element_from_bytes_compressed(test1, data);
element_printf(" decomp g %B\n", test1);
//writing compressed h to file */
element_fprintf(fpairing, "%B\n", h);
//element_printf("h = %B\n", h);
//writing n to file
gmp_fprintf(fpairing, "%Zd\n", pub->n);
fclose(fpairing);
//end of writing pairing keys to file
cipher_copy = (paillier_ciphertext_t*)malloc(no_copies*sizeof(paillier_ciphertext_t));
frand = fopen("rand.txt","w");
int i;
init_rand(rand, get_rand, pub->bits / 8 + 1);
for(i = 0; i< no_copies; i++)
{
mpz_init(rand_prf[i]);
do
mpz_urandomb(rand_prf[i], rand, pub->bits);
while( mpz_cmp(rand_prf[i], pub->n) >= 0 );
gmp_fprintf(frand, "%Zd\n", rand_prf[i]);
//printf("\nrandom : \n");
//mpz_out_str(stdout, 10, rand_prf[i]);
}
fclose(frand);
//****Opening files to read files and encrypt*****
d = opendir("./split");
if (d)
{
while ((dir = readdir(d)) != NULL)
{
//printf("%s\n", dir->d_name);
char fileName[1000], copy[1000];
strcpy(fileName, "./split/");
strcat(fileName,dir->d_name);
//printf("\nfile name %s", fileName);
if(!(fplain = fopen(fileName, "r")))
{
printf("\n not able to read %s", fileName);
// fputs("not possible to read file!\n", stderr);
count1++;
}
else
{
//printf("\n able to read %s", fileName);
fgets(len, 2048, fplain);
mpz_init_set_str(plain->m, len, 10);
// mpz_out_str(stdout, 10, plain->m);
fclose(fplain);
//Writing cipher text to files
strcpy(fileName, "./cipher/");
//strcat(fileName,dir->d_name);
//printf("\nfilename %s",fileName);
paillier_enc(tag, cipher_copy, pub,plain, get_rand, no_copies, rand_prf);
// mpz_out_str(stdout, 10, tag->t);
int j;
for(j=0;j < no_copies; j++)
{
char num[20];
strcpy(copy, fileName);
sprintf(num, "copy%d/", (j+1));
// strcat(copy, );
strcat(copy, num);
if(stat(copy, &st) == -1)
mkdir(copy,0777);
strcat(copy,dir->d_name);
if(!(fciph = fopen(copy, "w")))
{
printf("\nnot able to open file for writing cipher text %s", copy);
}
else
{
// printf("\nbefore enc");
gmp_fprintf(fciph, "%Zd\n", cipher_copy[j].c);
fclose(fciph);
}
}
//writing tags to files
strcpy(fileName, "./tag/");
strcat(fileName,dir->d_name);
//printf("\nfilename %s",fileName);
if(!(ftag = fopen(fileName, "w")))
{
printf("not able to open file for writing tag %s", fileName);
}
else
{
element_pow_mpz(temp_pow,u, tag->t);
element_mul(temp_pow, temp_pow, h);
element_pow_zn(sig, temp_pow, secret_key);
element_fprintf(ftag, "%B", sig);
fclose(ftag);
}
}
count++;
}
closedir(d);
}
printf("\nTotal number of files : %d, unreadable files %d", count, count1);
return 0;
}
void generate_key(int bit_length, paillier_pubkey_t** public_key, paillier_prvkey_t** private_key) {
paillier_keygen(bit_length, public_key, private_key, &paillier_get_rand_devurandom);
}
