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client.cpp
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/*
Copyright 2018 Intel Corporation
This software and the related documents are Intel copyrighted materials,
and your use of them is governed by the express license under which they
were provided to you (License). Unless the License provides otherwise,
you may not use, modify, copy, publish, distribute, disclose or transmit
this software or the related documents without Intel's prior written
permission.
This software and the related documents are provided as is, with no
express or implied warranties, other than those that are expressly stated
in the License.
*/
using namespace std;
#ifdef _WIN32
#pragma comment(lib, "crypt32.lib")
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#else
#include "config.h"
#endif
#ifdef _WIN32
// *sigh*
# include "vs/client/Enclave_u.h"
#else
# include "Enclave_u.h"
#endif
#if !defined(SGX_HW_SIM)&&!defined(_WIN32)
#include "sgx_stub.h"
#endif
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#include <time.h>
#include <sgx_urts.h>
#include <sys/stat.h>
#ifdef _WIN32
#include <intrin.h>
#include <wincrypt.h>
#include "win32/getopt.h"
#else
#include <openssl/evp.h>
#include <getopt.h>
#include <unistd.h>
#endif
#include <sgx_uae_service.h>
#include <sgx_ukey_exchange.h>
#include <sgx_uae_quote_ex.h>
#include <string>
#include "common.h"
#include "protocol.h"
#include "sgx_detect.h"
#include "hexutil.h"
#include "fileio.h"
#include "base64.h"
#include "crypto.h"
#include "msgio.h"
#include "logfile.h"
#include "quote_size.h"
#define MAX_LEN 80
#ifdef _WIN32
# define strdup(x) _strdup(x)
#else
# define _rdrand64_step(x) ({ unsigned char err; asm volatile("rdrand %0; setc %1":"=r"(*x), "=qm"(err)); err; })
#endif
#ifdef __x86_64__
#define DEF_LIB_SEARCHPATH "/lib:/lib64:/usr/lib:/usr/lib64"
#else
#define DEF_LIB_SEARCHPATH "/lib:/usr/lib"
#endif
typedef struct config_struct {
char mode;
uint32_t flags;
sgx_spid_t spid;
sgx_ec256_public_t pubkey;
sgx_quote_nonce_t nonce;
char *server;
char *port;
} config_t;
int file_in_searchpath (const char *file, const char *search, char *fullpath,
size_t len);
sgx_status_t sgx_create_enclave_search (
const char *filename,
const int edebug,
sgx_launch_token_t *token,
int *updated,
sgx_enclave_id_t *eid,
sgx_misc_attribute_t *attr
);
void usage();
int do_quote(sgx_enclave_id_t eid, config_t *config);
int do_attestation(sgx_enclave_id_t eid, config_t *config);
char debug= 0;
char verbose= 0;
#define MODE_ATTEST 0x0
#define MODE_EPID 0x1
#define MODE_QUOTE 0x2
#define OPT_PSE 0x01
#define OPT_NONCE 0x02
#define OPT_LINK 0x04
#define OPT_PUBKEY 0x08
/* Macros to set, clear, and get the mode and options */
#define SET_OPT(x,y) x|=y
#define CLEAR_OPT(x,y) x=x&~y
#define OPT_ISSET(x,y) x&y
#ifdef _WIN32
# define ENCLAVE_NAME "Enclave.signed.dll"
#else
# define ENCLAVE_NAME "Enclave.signed.so"
#endif
int main (int argc, char *argv[])
{
config_t config;
sgx_launch_token_t token= { 0 };
sgx_status_t status;
sgx_enclave_id_t eid= 0;
int updated= 0;
int sgx_support;
uint32_t i;
EVP_PKEY *service_public_key= NULL;
char have_spid= 0;
char flag_stdio= 0;
/* Create a logfile to capture debug output and actual msg data */
fplog = create_logfile("client.log");
dividerWithText(fplog, "Client Log Timestamp");
const time_t timeT = time(NULL);
struct tm lt, *ltp;
#ifndef _WIN32
ltp = localtime(&timeT);
if ( ltp == NULL ) {
perror("localtime");
return 1;
}
lt= *ltp;
#else
localtime_s(<, &timeT);
#endif
fprintf(fplog, "%4d-%02d-%02d %02d:%02d:%02d\n",
lt.tm_year + 1900,
lt.tm_mon + 1,
lt.tm_mday,
lt.tm_hour,
lt.tm_min,
lt.tm_sec);
divider(fplog);
memset(&config, 0, sizeof(config));
config.mode= MODE_ATTEST;
static struct option long_opt[] =
{
{"help", no_argument, 0, 'h'},
{"debug", no_argument, 0, 'd'},
{"epid-gid", no_argument, 0, 'e'},
#ifdef _WIN32
{"pse-manifest",
no_argument, 0, 'm'},
#endif
{"nonce", required_argument, 0, 'n'},
{"nonce-file", required_argument, 0, 'N'},
{"rand-nonce", no_argument, 0, 'r'},
{"spid", required_argument, 0, 's'},
{"spid-file", required_argument, 0, 'S'},
{"linkable", no_argument, 0, 'l'},
{"pubkey", optional_argument, 0, 'p'},
{"pubkey-file", required_argument, 0, 'P'},
{"quote", no_argument, 0, 'q'},
{"verbose", no_argument, 0, 'v'},
{"stdio", no_argument, 0, 'z'},
{ 0, 0, 0, 0 }
};
/* Parse our options */
while (1) {
int c;
int opt_index= 0;
unsigned char keyin[64];
c= getopt_long(argc, argv, "N:P:S:dehlmn:p:qrs:vz", long_opt,
&opt_index);
if ( c == -1 ) break;
switch(c) {
case 0:
break;
case 'N':
if ( ! from_hexstring_file((unsigned char *) &config.nonce,
optarg, 16)) {
fprintf(stderr, "nonce must be 32-byte hex string\n");
exit(1);
}
SET_OPT(config.flags, OPT_NONCE);
break;
case 'P':
if ( ! key_load_file(&service_public_key, optarg, KEY_PUBLIC) ) {
fprintf(stderr, "%s: ", optarg);
crypto_perror("key_load_file");
exit(1);
}
if ( ! key_to_sgx_ec256(&config.pubkey, service_public_key) ) {
fprintf(stderr, "%s: ", optarg);
crypto_perror("key_to_sgx_ec256");
exit(1);
}
SET_OPT(config.flags, OPT_PUBKEY);
break;
case 'S':
if ( ! from_hexstring_file((unsigned char *) &config.spid,
optarg, 16)) {
fprintf(stderr, "SPID must be 32-byte hex string\n");
exit(1);
}
++have_spid;
break;
case 'd':
debug= 1;
break;
case 'e':
config.mode= MODE_EPID;
break;
case 'l':
SET_OPT(config.flags, OPT_LINK);
break;
case 'm':
SET_OPT(config.flags, OPT_PSE);
break;
case 'n':
if ( strlen(optarg) < 32 ) {
fprintf(stderr, "nonce must be 32-byte hex string\n");
exit(1);
}
if ( ! from_hexstring((unsigned char *) &config.nonce,
(unsigned char *) optarg, 16) ) {
fprintf(stderr, "nonce must be 32-byte hex string\n");
exit(1);
}
SET_OPT(config.flags, OPT_NONCE);
break;
case 'p':
if ( ! from_hexstring((unsigned char *) keyin,
(unsigned char *) optarg, 64)) {
fprintf(stderr, "key must be 128-byte hex string\n");
exit(1);
}
/* Reverse the byte stream to make a little endien style value */
for(i= 0; i< 32; ++i) config.pubkey.gx[i]= keyin[31-i];
for(i= 0; i< 32; ++i) config.pubkey.gy[i]= keyin[63-i];
SET_OPT(config.flags, OPT_PUBKEY);
break;
case 'q':
config.mode = MODE_QUOTE;
break;
case 'r':
for(i= 0; i< 2; ++i) {
int retry= 10;
unsigned char ok= 0;
uint64_t *np= (uint64_t *) &config.nonce;
while ( !ok && retry ) ok= _rdrand64_step(&np[i]);
if ( ok == 0 ) {
fprintf(stderr, "nonce: RDRAND underflow\n");
exit(1);
}
}
SET_OPT(config.flags, OPT_NONCE);
break;
case 's':
if ( strlen(optarg) < 32 ) {
fprintf(stderr, "SPID must be 32-byte hex string\n");
exit(1);
}
if ( ! from_hexstring((unsigned char *) &config.spid,
(unsigned char *) optarg, 16) ) {
fprintf(stderr, "SPID must be 32-byte hex string\n");
exit(1);
}
++have_spid;
break;
case 'v':
verbose= 1;
break;
case 'z':
flag_stdio= 1;
break;
case 'h':
case '?':
default:
usage();
}
}
argc-= optind;
if ( argc > 1 ) usage();
/* Remaining argument is host[:port] */
if ( flag_stdio && argc ) usage();
else if ( !flag_stdio && ! argc ) {
// Default to localhost
config.server= strdup("localhost");
if ( config.server == NULL ) {
perror("malloc");
return 1;
}
} else if ( argc ) {
char *cp;
config.server= strdup(argv[optind]);
if ( config.server == NULL ) {
perror("malloc");
return 1;
}
/* If there's a : then we have a port, too */
cp= strchr(config.server, ':');
if ( cp != NULL ) {
*cp++= '\0';
config.port= cp;
}
}
if ( ! have_spid && config.mode != MODE_EPID ) {
fprintf(stderr, "SPID required. Use one of --spid or --spid-file \n");
return 1;
}
/* Can we run SGX? */
#ifndef SGX_HW_SIM
sgx_support = get_sgx_support();
if (sgx_support & SGX_SUPPORT_NO) {
fprintf(stderr, "This system does not support Intel SGX.\n");
return 1;
} else {
if (sgx_support & SGX_SUPPORT_ENABLE_REQUIRED) {
fprintf(stderr, "Intel SGX is supported on this system but disabled in the BIOS\n");
return 1;
}
else if (sgx_support & SGX_SUPPORT_REBOOT_REQUIRED) {
fprintf(stderr, "Intel SGX will be enabled after the next reboot\n");
return 1;
}
else if (!(sgx_support & SGX_SUPPORT_ENABLED)) {
fprintf(stderr, "Intel SGX is supported on this sytem but not available for use\n");
fprintf(stderr, "The system may lock BIOS support, or the Platform Software is not available\n");
return 1;
}
}
#endif
/* Launch the enclave */
#ifdef _WIN32
status = sgx_create_enclave(ENCLAVE_NAME, SGX_DEBUG_FLAG,
&token, &updated, &eid, 0);
if (status != SGX_SUCCESS) {
fprintf(stderr, "sgx_create_enclave: %s: %08x\n",
ENCLAVE_NAME, status);
return 1;
}
#else
status = sgx_create_enclave_search(ENCLAVE_NAME,
SGX_DEBUG_FLAG, &token, &updated, &eid, 0);
if ( status != SGX_SUCCESS ) {
fprintf(stderr, "sgx_create_enclave: %s: %08x\n",
ENCLAVE_NAME, status);
if ( status == SGX_ERROR_ENCLAVE_FILE_ACCESS )
fprintf(stderr, "Did you forget to set LD_LIBRARY_PATH?\n");
return 1;
}
#endif
/* Are we attesting, or just spitting out a quote? */
if ( config.mode == MODE_ATTEST ) {
do_attestation(eid, &config);
} else if ( config.mode == MODE_EPID || config.mode == MODE_QUOTE ) {
do_quote(eid, &config);
} else {
fprintf(stderr, "Unknown operation mode.\n");
return 1;
}
close_logfile(fplog);
return 0;
}
int do_attestation (sgx_enclave_id_t eid, config_t *config)
{
sgx_status_t status, sgxrv, pse_status;
sgx_ra_msg1_t msg1;
sgx_ra_msg2_t *msg2 = NULL;
sgx_ra_msg3_t *msg3 = NULL;
ra_msg4_t *msg4 = NULL;
uint32_t msg0_extended_epid_group_id = 0;
uint32_t msg3_sz;
uint32_t flags= config->flags;
sgx_ra_context_t ra_ctx= 0xdeadbeef;
int rv;
MsgIO *msgio;
size_t msg4sz = 0;
int enclaveTrusted = NotTrusted; // Not Trusted
int b_pse= OPT_ISSET(flags, OPT_PSE);
if ( config->server == NULL ) {
msgio = new MsgIO();
} else {
try {
msgio = new MsgIO(config->server, (config->port == NULL) ?
DEFAULT_PORT : config->port);
}
catch(...) {
exit(1);
}
}
/*
* WARNING! Normally, the public key would be hardcoded into the
* enclave, not passed in as a parameter. Hardcoding prevents
* the enclave using an unauthorized key.
*
* This is diagnostic/test application, however, so we have
* the flexibility of a dynamically assigned key.
*/
/* Executes an ECALL that runs sgx_ra_init() */
if ( OPT_ISSET(flags, OPT_PUBKEY) ) {
if ( debug ) fprintf(stderr, "+++ using supplied public key\n");
status= enclave_ra_init(eid, &sgxrv, config->pubkey, b_pse,
&ra_ctx, &pse_status);
} else {
if ( debug ) fprintf(stderr, "+++ using default public key\n");
status= enclave_ra_init_def(eid, &sgxrv, b_pse, &ra_ctx,
&pse_status);
}
/* Did the ECALL succeed? */
if ( status != SGX_SUCCESS ) {
fprintf(stderr, "enclave_ra_init: %08x\n", status);
delete msgio;
return 1;
}
#ifdef _WIN32
/* If we asked for a PSE session, did that succeed? */
if (b_pse) {
if ( pse_status != SGX_SUCCESS ) {
fprintf(stderr, "pse_session: %08x\n", pse_status);
delete msgio;
return 1;
}
}
#endif
/* Did sgx_ra_init() succeed? */
if ( sgxrv != SGX_SUCCESS ) {
fprintf(stderr, "sgx_ra_init: %08x\n", sgxrv);
delete msgio;
return 1;
}
/* Generate msg0 */
status = sgx_get_extended_epid_group_id(&msg0_extended_epid_group_id);
if ( status != SGX_SUCCESS ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "sgx_get_extended_epid_group_id: %08x\n", status);
delete msgio;
return 1;
}
if ( verbose ) {
dividerWithText(stderr, "Msg0 Details");
dividerWithText(fplog, "Msg0 Details");
fprintf(stderr, "Extended Epid Group ID: ");
fprintf(fplog, "Extended Epid Group ID: ");
print_hexstring(stderr, &msg0_extended_epid_group_id,
sizeof(uint32_t));
print_hexstring(fplog, &msg0_extended_epid_group_id,
sizeof(uint32_t));
fprintf(stderr, "\n");
fprintf(fplog, "\n");
divider(stderr);
divider(fplog);
}
/* Generate msg1 */
status= sgx_ra_get_msg1(ra_ctx, eid, sgx_ra_get_ga, &msg1);
if ( status != SGX_SUCCESS ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "sgx_ra_get_msg1: %08x\n", status);
fprintf(fplog, "sgx_ra_get_msg1: %08x\n", status);
delete msgio;
return 1;
}
if ( verbose ) {
dividerWithText(stderr,"Msg1 Details");
dividerWithText(fplog,"Msg1 Details");
fprintf(stderr, "msg1.g_a.gx = ");
fprintf(fplog, "msg1.g_a.gx = ");
print_hexstring(stderr, msg1.g_a.gx, 32);
print_hexstring(fplog, msg1.g_a.gx, 32);
fprintf(stderr, "\nmsg1.g_a.gy = ");
fprintf(fplog, "\nmsg1.g_a.gy = ");
print_hexstring(stderr, msg1.g_a.gy, 32);
print_hexstring(fplog, msg1.g_a.gy, 32);
fprintf(stderr, "\nmsg1.gid = ");
fprintf(fplog, "\nmsg1.gid = ");
print_hexstring(stderr, msg1.gid, 4);
print_hexstring(fplog, msg1.gid, 4);
fprintf(stderr, "\n");
fprintf(fplog, "\n");
divider(stderr);
divider(fplog);
}
/*
* Send msg0 and msg1 concatenated together (msg0||msg1). We do
* this for efficiency, to eliminate an additional round-trip
* between client and server. The assumption here is that most
* clients have the correct extended_epid_group_id so it's
* a waste to send msg0 separately when the probability of a
* rejection is astronomically small.
*
* If it /is/ rejected, then the client has only wasted a tiny
* amount of time generating keys that won't be used.
*/
dividerWithText(fplog, "Msg0||Msg1 ==> SP");
fsend_msg_partial(fplog, &msg0_extended_epid_group_id,
sizeof(msg0_extended_epid_group_id));
fsend_msg(fplog, &msg1, sizeof(msg1));
divider(fplog);
dividerWithText(stderr, "Copy/Paste Msg0||Msg1 Below to SP");
msgio->send_partial(&msg0_extended_epid_group_id,
sizeof(msg0_extended_epid_group_id));
msgio->send(&msg1, sizeof(msg1));
divider(stderr);
fprintf(stderr, "Waiting for msg2\n");
/* Read msg2
*
* msg2 is variable length b/c it includes the revocation list at
* the end. msg2 is malloc'd in readZ_msg do free it when done.
*/
rv= msgio->read((void **) &msg2, NULL);
if ( rv == 0 ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "protocol error reading msg2\n");
delete msgio;
exit(1);
} else if ( rv == -1 ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "system error occurred while reading msg2\n");
delete msgio;
exit(1);
}
if ( verbose ) {
dividerWithText(stderr, "Msg2 Details");
dividerWithText(fplog, "Msg2 Details (Received from SP)");
fprintf(stderr, "msg2.g_b.gx = ");
fprintf(fplog, "msg2.g_b.gx = ");
print_hexstring(stderr, &msg2->g_b.gx, sizeof(msg2->g_b.gx));
print_hexstring(fplog, &msg2->g_b.gx, sizeof(msg2->g_b.gx));
fprintf(stderr, "\nmsg2.g_b.gy = ");
fprintf(fplog, "\nmsg2.g_b.gy = ");
print_hexstring(stderr, &msg2->g_b.gy, sizeof(msg2->g_b.gy));
print_hexstring(fplog, &msg2->g_b.gy, sizeof(msg2->g_b.gy));
fprintf(stderr, "\nmsg2.spid = ");
fprintf(fplog, "\nmsg2.spid = ");
print_hexstring(stderr, &msg2->spid, sizeof(msg2->spid));
print_hexstring(fplog, &msg2->spid, sizeof(msg2->spid));
fprintf(stderr, "\nmsg2.quote_type = ");
fprintf(fplog, "\nmsg2.quote_type = ");
print_hexstring(stderr, &msg2->quote_type, sizeof(msg2->quote_type));
print_hexstring(fplog, &msg2->quote_type, sizeof(msg2->quote_type));
fprintf(stderr, "\nmsg2.kdf_id = ");
fprintf(fplog, "\nmsg2.kdf_id = ");
print_hexstring(stderr, &msg2->kdf_id, sizeof(msg2->kdf_id));
print_hexstring(fplog, &msg2->kdf_id, sizeof(msg2->kdf_id));
fprintf(stderr, "\nmsg2.sign_ga_gb = ");
fprintf(fplog, "\nmsg2.sign_ga_gb = ");
print_hexstring(stderr, &msg2->sign_gb_ga, sizeof(msg2->sign_gb_ga));
print_hexstring(fplog, &msg2->sign_gb_ga, sizeof(msg2->sign_gb_ga));
fprintf(stderr, "\nmsg2.mac = ");
fprintf(fplog, "\nmsg2.mac = ");
print_hexstring(stderr, &msg2->mac, sizeof(msg2->mac));
print_hexstring(fplog, &msg2->mac, sizeof(msg2->mac));
fprintf(stderr, "\nmsg2.sig_rl_size = ");
fprintf(fplog, "\nmsg2.sig_rl_size = ");
print_hexstring(stderr, &msg2->sig_rl_size, sizeof(msg2->sig_rl_size));
print_hexstring(fplog, &msg2->sig_rl_size, sizeof(msg2->sig_rl_size));
fprintf(stderr, "\nmsg2.sig_rl = ");
fprintf(fplog, "\nmsg2.sig_rl = ");
print_hexstring(stderr, &msg2->sig_rl, msg2->sig_rl_size);
print_hexstring(fplog, &msg2->sig_rl, msg2->sig_rl_size);
fprintf(stderr, "\n");
fprintf(fplog, "\n");
divider(stderr);
divider(fplog);
}
if ( debug ) {
fprintf(stderr, "+++ msg2_size = %zu\n",
sizeof(sgx_ra_msg2_t)+msg2->sig_rl_size);
fprintf(fplog, "+++ msg2_size = %zu\n",
sizeof(sgx_ra_msg2_t)+msg2->sig_rl_size);
}
/* Process Msg2, Get Msg3 */
/* object msg3 is malloc'd by SGX SDK, so remember to free when finished */
msg3 = NULL;
status = sgx_ra_proc_msg2(ra_ctx, eid,
sgx_ra_proc_msg2_trusted, sgx_ra_get_msg3_trusted, msg2,
sizeof(sgx_ra_msg2_t) + msg2->sig_rl_size,
&msg3, &msg3_sz);
free(msg2);
if ( status != SGX_SUCCESS ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "sgx_ra_proc_msg2: %08x\n", status);
fprintf(fplog, "sgx_ra_proc_msg2: %08x\n", status);
delete msgio;
return 1;
}
if ( debug ) {
fprintf(stderr, "+++ msg3_size = %u\n", msg3_sz);
fprintf(fplog, "+++ msg3_size = %u\n", msg3_sz);
}
if ( verbose ) {
dividerWithText(stderr, "Msg3 Details");
dividerWithText(fplog, "Msg3 Details");
fprintf(stderr, "msg3.mac = ");
fprintf(fplog, "msg3.mac = ");
print_hexstring(stderr, msg3->mac, sizeof(msg3->mac));
print_hexstring(fplog, msg3->mac, sizeof(msg3->mac));
fprintf(stderr, "\nmsg3.g_a.gx = ");
fprintf(fplog, "\nmsg3.g_a.gx = ");
print_hexstring(stderr, msg3->g_a.gx, sizeof(msg3->g_a.gx));
print_hexstring(fplog, msg3->g_a.gx, sizeof(msg3->g_a.gx));
fprintf(stderr, "\nmsg3.g_a.gy = ");
fprintf(fplog, "\nmsg3.g_a.gy = ");
print_hexstring(stderr, msg3->g_a.gy, sizeof(msg3->g_a.gy));
print_hexstring(fplog, msg3->g_a.gy, sizeof(msg3->g_a.gy));
#ifdef _WIN32
fprintf(stderr, "\nmsg3.ps_sec_prop.sgx_ps_sec_prop_desc = ");
fprintf(fplog, "\nmsg3.ps_sec_prop.sgx_ps_sec_prop_desc = ");
print_hexstring(stderr, msg3->ps_sec_prop.sgx_ps_sec_prop_desc,
sizeof(msg3->ps_sec_prop.sgx_ps_sec_prop_desc));
print_hexstring(fplog, msg3->ps_sec_prop.sgx_ps_sec_prop_desc,
sizeof(msg3->ps_sec_prop.sgx_ps_sec_prop_desc));
fprintf(fplog, "\n");
#endif
fprintf(stderr, "\nmsg3.quote = ");
fprintf(fplog, "\nmsg3.quote = ");
print_hexstring(stderr, msg3->quote, msg3_sz-sizeof(sgx_ra_msg3_t));
print_hexstring(fplog, msg3->quote, msg3_sz-sizeof(sgx_ra_msg3_t));
fprintf(fplog, "\n");
fprintf(stderr, "\n");
fprintf(fplog, "\n");
divider(stderr);
divider(fplog);
}
dividerWithText(stderr, "Copy/Paste Msg3 Below to SP");
msgio->send(msg3, msg3_sz);
divider(stderr);
dividerWithText(fplog, "Msg3 ==> SP");
fsend_msg(fplog, msg3, msg3_sz);
divider(fplog);
if ( msg3 ) {
free(msg3);
msg3 = NULL;
}
/* Read Msg4 provided by Service Provider, then process */
rv= msgio->read((void **)&msg4, &msg4sz);
if ( rv == 0 ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "protocol error reading msg4\n");
delete msgio;
exit(1);
} else if ( rv == -1 ) {
enclave_ra_close(eid, &sgxrv, ra_ctx);
fprintf(stderr, "system error occurred while reading msg4\n");
delete msgio;
exit(1);
}
edividerWithText("Enclave Trust Status from Service Provider");
enclaveTrusted= msg4->status;
if ( enclaveTrusted == Trusted ) {
eprintf("Enclave TRUSTED\n");
}
else if ( enclaveTrusted == NotTrusted ) {
eprintf("Enclave NOT TRUSTED\n");
}
else if ( enclaveTrusted == Trusted_ItsComplicated ) {
// Trusted, but client may be untrusted in the future unless it
// takes action.
eprintf("Enclave Trust is TRUSTED and COMPLICATED. The client is out of date and\nmay not be trusted in the future depending on the service provider's policy.\n");
} else {
// Not Trusted, but client may be able to take action to become
// trusted.
eprintf("Enclave Trust is NOT TRUSTED and COMPLICATED. The client is out of date.\n");
}
/* check to see if we have a PIB by comparing to empty PIB */
sgx_platform_info_t emptyPIB;
memset(&emptyPIB, 0, sizeof (sgx_platform_info_t));
int retPibCmp = memcmp(&emptyPIB, (void *)(&msg4->platformInfoBlob), sizeof (sgx_platform_info_t));
if (retPibCmp == 0 ) {
if ( verbose ) eprintf("A Platform Info Blob (PIB) was NOT provided by the IAS\n");
} else {
if ( verbose ) eprintf("A Platform Info Blob (PIB) was provided by the IAS\n");
if ( debug ) {
eprintf("+++ PIB: " );
print_hexstring(stderr, &msg4->platformInfoBlob, sizeof (sgx_platform_info_t));
print_hexstring(fplog, &msg4->platformInfoBlob, sizeof (sgx_platform_info_t));
eprintf("\n");
}
/* We have a PIB, so check to see if there are actions to take */
sgx_update_info_bit_t update_info;
sgx_status_t ret = sgx_report_attestation_status(&msg4->platformInfoBlob,
enclaveTrusted, &update_info);
if ( debug ) eprintf("+++ sgx_report_attestation_status ret = 0x%04x\n", ret);
edivider();
/* Check to see if there is an update needed */
if ( ret == SGX_ERROR_UPDATE_NEEDED ) {
edividerWithText("Platform Update Required");
eprintf("The following Platform Update(s) are required to bring this\n");
eprintf("platform's Trusted Computing Base (TCB) back into compliance:\n\n");
if( update_info.pswUpdate ) {
eprintf(" * Intel SGX Platform Software needs to be updated to the latest version.\n");
}
if( update_info.csmeFwUpdate ) {
eprintf(" * The Intel Management Engine Firmware Needs to be Updated. Contact your\n");
eprintf(" OEM for a BIOS Update.\n");
}
if( update_info.ucodeUpdate ) {
eprintf(" * The CPU Microcode needs to be updated. Contact your OEM for a platform\n");
eprintf(" BIOS Update.\n");
}
eprintf("\n");
edivider();
}
}
/*
* If the enclave is trusted, fetch a hash of the the MK and SK from
* the enclave to show proof of a shared secret with the service
* provider.
*/
if ( enclaveTrusted == Trusted ) {
sgx_status_t key_status, sha_status;
sgx_sha256_hash_t mkhash, skhash;
// First the MK
if ( debug ) eprintf("+++ fetching SHA256(MK)\n");
status= enclave_ra_get_key_hash(eid, &sha_status, &key_status, ra_ctx,
SGX_RA_KEY_MK, &mkhash);
if ( debug ) eprintf("+++ ECALL enclage_ra_get_key_hash (MK) ret= 0x%04x\n",
status);
if ( debug ) eprintf("+++ sgx_ra_get_keys (MK) ret= 0x%04x\n", key_status);
// Then the SK
if ( debug ) eprintf("+++ fetching SHA256(SK)\n");
status= enclave_ra_get_key_hash(eid, &sha_status, &key_status, ra_ctx,
SGX_RA_KEY_SK, &skhash);
if ( debug ) eprintf("+++ ECALL enclage_ra_get_key_hash (MK) ret= 0x%04x\n",
status);
if ( debug ) eprintf("+++ sgx_ra_get_keys (MK) ret= 0x%04x\n", key_status);
if ( verbose ) {
eprintf("SHA256(MK) = ");
print_hexstring(stderr, mkhash, sizeof(mkhash));
print_hexstring(fplog, mkhash, sizeof(mkhash));
eprintf("\n");
eprintf("SHA256(SK) = ");
print_hexstring(stderr, skhash, sizeof(skhash));
print_hexstring(fplog, skhash, sizeof(skhash));
eprintf("\n");
}
}
free (msg4);
enclave_ra_close(eid, &sgxrv, ra_ctx);
delete msgio;
return 0;
}
/*----------------------------------------------------------------------
* do_quote()
*
* Generate a quote from the enclave.
*----------------------------------------------------------------------
* WARNING!
*
* DO NOT USE THIS SUBROUTINE AS A TEMPLATE FOR IMPLEMENTING REMOTE
* ATTESTATION. do_quote() short-circuits the RA process in order
* to generate an enclave quote directly!
*
* The high-level functions provided for remote attestation take
* care of the low-level details of quote generation for you:
*
* sgx_ra_init()
* sgx_ra_get_msg1
* sgx_ra_proc_msg2
*
* End developers should not normally be calling these functions
* directly when doing remote attestation:
*
* sgx_get_ps_sec_prop()
* sgx_get_quote()
* sgx_get_quote_size()
* sgx_calc_quote_size()
* sgx_get_report()
* sgx_init_quote()
*
*----------------------------------------------------------------------
*/
int do_quote(sgx_enclave_id_t eid, config_t *config)
{
sgx_status_t status, sgxrv;
sgx_quote_t *quote;
sgx_report_t report;
sgx_report_t qe_report;
sgx_target_info_t target_info;
sgx_epid_group_id_t epid_gid;
uint32_t sz= 0;
uint32_t flags= config->flags;
sgx_quote_sign_type_t linkable= SGX_UNLINKABLE_SIGNATURE;
#ifdef _WIN32
sgx_ps_cap_t ps_cap;
char *pse_manifest = NULL;
size_t pse_manifest_sz;
LPTSTR b64quote = NULL;
DWORD sz_b64quote = 0;
LPTSTR b64manifest = NULL;
DWORD sz_b64manifest = 0;
#else
char *b64quote= NULL;
char *b64manifest = NULL;
#endif
if (OPT_ISSET(flags, OPT_LINK)) linkable= SGX_LINKABLE_SIGNATURE;
/* Platform services info. Win32 only. */
#ifdef _WIN32
if (OPT_ISSET(flags, OPT_PSE)) {
status = get_pse_manifest_size(eid, &pse_manifest_sz);
if (status != SGX_SUCCESS) {
fprintf(stderr, "get_pse_manifest_size: %08x\n",
status);
return 1;
}
pse_manifest = (char *) malloc(pse_manifest_sz);
status = get_pse_manifest(eid, &sgxrv, pse_manifest, pse_manifest_sz);
if (status != SGX_SUCCESS) {
fprintf(stderr, "get_pse_manifest: %08x\n",
status);
return 1;
}
if (sgxrv != SGX_SUCCESS) {
fprintf(stderr, "get_sec_prop_desc_ex: %08x\n",
sgxrv);
return 1;
}
}
#endif
/* Get our quote */
memset(&report, 0, sizeof(report));
status= sgx_init_quote(&target_info, &epid_gid);
if ( status != SGX_SUCCESS ) {
fprintf(stderr, "sgx_init_quote: %08x\n", status);
return 1;
}
/* Did they ask for just the EPID? */
if ( config->mode == MODE_EPID ) {
printf("%08x\n", *(uint32_t *)epid_gid);
exit(0);
}
status= get_report(eid, &sgxrv, &report, &target_info);
if ( status != SGX_SUCCESS ) {
fprintf(stderr, "get_report: %08x\n", status);
return 1;
}
if ( sgxrv != SGX_SUCCESS ) {
fprintf(stderr, "sgx_create_report: %08x\n", sgxrv);
return 1;
}
// sgx_get_quote_size() has been deprecated, but our PSW may be too old
// so use a wrapper function.
if (! get_quote_size(&status, &sz)) {
fprintf(stderr, "PSW missing sgx_get_quote_size() and sgx_calc_quote_size()\n");
return 1;
}
if ( status != SGX_SUCCESS ) {
fprintf(stderr, "SGX error while getting quote size: %08x\n", status);
return 1;
}
quote= (sgx_quote_t *) malloc(sz);
if ( quote == NULL ) {
fprintf(stderr, "out of memory\n");
return 1;
}
memset(quote, 0, sz);
status= sgx_get_quote(&report, linkable, &config->spid,
(OPT_ISSET(flags, OPT_NONCE)) ? &config->nonce : NULL,
NULL, 0,
(OPT_ISSET(flags, OPT_NONCE)) ? &qe_report : NULL,