int
main(void)
{
char *id = "argp at domain cs.tcd.ie";
params_t params;
byte_string_t U;
byte_string_t secret;
byte_string_t key;
byte_string_t master;
IBE_init();
IBE_setup(params, master, 512, 160, "test");
printf("system parameters generated!\n");
printf("IBE test program\n");
printf("Test ID: %s\n", id);
printf("generating key...\n");
IBE_KEM_encrypt(secret, U, id, params);
printf("U =");
byte_string_printf(U, " %02X");
printf("\n");
printf("secret =");
byte_string_printf(secret, " %02X");
printf("\n");
byte_string_clear(secret);
printf("extracting...\n");
IBE_extract(key, master, id, params);
printf("recovering secret...\n");
IBE_KEM_decrypt(secret, U, key, params);
/* hopefully it will be the same as above */
printf("secret =");
byte_string_printf(secret, " %02X");
printf("\n");
params_clear(params);
IBE_clear();
byte_string_clear(U);
byte_string_clear(key);
byte_string_clear(secret);
byte_string_clear(master);
return(0);
}
int main(int argc, char **argv)
{
char defaultcnffile[] = "gen.cnf";
char *cnffile;
CONF_CTX *cnfctx;
int t, n;
int bits, qbits;
char *systemid;
char *paramsfile;
char **sharefile;
char *dfltlist[3];
char dl0[] = "share";
char dl1[] = "share2";
int i;
byte_string_t master;
params_t params;
if (argc < 2) {
cnffile = defaultcnffile;
} else {
cnffile = argv[1];
}
cnfctx = LoadConfig(cnffile);
if (!cnfctx) {
fprintf(stderr, "error opening %s\n", cnffile);
fprintf(stderr, "using default values\n");
cnfctx = constructCTX();
//exit(1);
}
t = GetIntParam(cnfctx, "threshold", 0, 2);
n = GetIntParam(cnfctx, "shares", 0, 2);
bits = GetIntParam(cnfctx, "pbits", 0, 1024);
qbits = GetIntParam(cnfctx, "qbits", 0, 160);
systemid = GetStringParam(cnfctx, "system", 0, "noname");
paramsfile = GetPathParam(cnfctx, "params", 0, "params.txt");
dfltlist[0] = dl0;
dfltlist[1] = dl1;
sharefile = GetListParam(cnfctx, "sharefiles", 0, dfltlist);
printf("Generating IBE public parameters and secret...\n");
printf("Parameters:\n");
printf("system name: %s\n", systemid);
printf("params file: %s\n", paramsfile);
printf("%d-out-of-%d sharing\n", t, n);
printf("%d-bit prime\n", bits);
printf("%d-bit subgroup\n", qbits);
printf("share files:\n");
for (i=0; i<n; i++) {
if (sharefile[i] == NULL) {
fprintf(stderr, "not enough filenames given\n");
exit(1);
}
printf(" %s\n", sharefile[i]);
}
IBE_init();
IBE_setup(params, master, bits, qbits, systemid);
byte_string_printf(master, " %02X");
FMT_split_master(sharefile, master, t, n, params);
FMT_save_params(paramsfile, params);
// test it works
if (0) {
byte_string_t key;
//FMT_construct_master(key, sharefile, t);
IBE_extract(key, master, "*****@*****.**", params);
byte_string_clear(key);
}
byte_string_clear(master);
params_clear(params);
IBE_clear();
return 0;
}
