/* Simple IBE test program * Ben Lynn *//*Copyright (C) 2001 Benjamin Lynn (blynn@cs.stanford.edu)See LICENSE for license*/#include "ibe.h"int main(void){    char *id;    params_t params;    byte_string_t U;    byte_string_t secret;    byte_string_t key;    byte_string_t master;    //initialize IBE library    IBE_init();    //generate new system parameters:    //128-bit prime, 64-bit subgroup size    IBE_setup(params, master, 512, 160, "test");    id = "blynn@stanford.edu";    printf("IBE test program\n");    printf("Test ID: %s\n", id);    //generate a random secret and its encryption    printf("generating key...\n");    IBE_KEM_encrypt(secret, U, id, params);    //print ciphertext in hexadecimal    printf("U =");    byte_string_printf(U, " %02X");    printf("\n");    printf("secret =");    byte_string_printf(secret, " %02X");    printf("\n");    byte_string_clear(secret);    //Extract the private key corresponding to my ID    //This is not the normal way of getting a private key;    //normally the master secret is unknown on the decryption side    //and they have obtained their private key by fetching it from the PKG    printf("extracting...\n");    IBE_extract(key, master, id, params);    //The key is now stored in keytext and has length keytextlen    //Recover the secret from its encryption    printf("recovering secret...\n");    IBE_KEM_decrypt(secret, U, key, params);    //Print it out. Hopefully it'll be the same as before    printf("secret =");    byte_string_printf(secret, " %02X");    printf("\n");    //free memory used by IBE library    params_clear(params);    IBE_clear();    byte_string_clear(U);    byte_string_clear(key);    byte_string_clear(secret);    byte_string_clear(master);    return 0;}