/* frontend to IBE_decrypt() in ibe_lib.cc * (performs decryption) * Ben Lynn *//*Copyright (C) 2001 Benjamin Lynn (blynn@cs.stanford.edu)See LICENSE for license*/#include <openssl/evp.h>#include <string.h>#include "ibe.h"#include "format.h"#include "ibe_progs.h"int decrypt(int argc, char **argv){    char *id;    char *privkeyfile = GetStringParam(cnfctx, "keyfile", 0, "keyfile");    byte_string_t key;    char pw[100];    int status;    if (argc < 2) {	printf("Usage: decrypt ID\n\n");	printf("Decrypts stdin and prints on stdout\n");	printf("Reads private key from file specified in config file\n");	return 1;    }    id = FMT_make_id(argv[1], NULL, params);    status = EVP_read_pw_string(pw, 100, "private key password: ", 1);    if (status) {	fprintf(stderr, "error reading private key password\n");	return 1;    }    status = FMT_crypt_load(privkeyfile, key, pw);    if (status != 1) {	fprintf(stderr, "error loading private key %s\n", privkeyfile);	return 1;    }    status = FMT_decrypt_stream(id, key, stdin, stdout, params);    if (status != 1) {	fprintf(stderr, "error in decryption\n");	return 1;    }    byte_string_clear(key);    return 0;}