--- /dev/null
+/* Test program to verify that RSA signing is thread-safe in OpenSSL. */
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <openssl/crypto.h>
+#include <openssl/err.h>
+#include <openssl/objects.h>
+#include <openssl/rand.h>
+#include <openssl/rsa.h>
+#include <openssl/md5.h>
+#include <openssl/ssl.h>
+
+/* Just assume we want to do engine stuff if we're using 0.9.6b or
+ * higher. This assumption is only valid for versions bundled with RHL. */
+#if OPENSSL_VERSION_NUMBER >= 0x0090602fL
+#include <openssl/engine.h>
+#define USE_ENGINE
+#endif
+
+#define MAX_THREAD_COUNT 10000
+#define ITERATION_COUNT 10
+#define MAIN_COUNT 100
+
+/* OpenSSL requires us to provide thread ID and locking primitives. */
+pthread_mutex_t *mutex_locks = NULL;
+static unsigned long
+thread_id_cb(void)
+{
+ return (unsigned long) pthread_self();
+}
+static void
+lock_cb(int mode, int n, const char *file, int line)
+{
+ if (mode & CRYPTO_LOCK) {
+ pthread_mutex_lock(&mutex_locks[n]);
+ } else {
+ pthread_mutex_unlock(&mutex_locks[n]);
+ }
+}
+
+struct thread_args {
+ RSA *rsa;
+ int digest_type;
+ unsigned char *digest;
+ unsigned int digest_len;
+ unsigned char *signature;
+ unsigned int signature_len;
+ pthread_t main_thread;
+};
+
+static int print = 0;
+
+pthread_mutex_t sign_lock = PTHREAD_MUTEX_INITIALIZER;
+static int locked_sign = 0;
+static void SIGN_LOCK() {if (locked_sign) pthread_mutex_lock(&sign_lock);}
+static void SIGN_UNLOCK() {if (locked_sign) pthread_mutex_unlock(&sign_lock);}
+
+pthread_mutex_t verify_lock = PTHREAD_MUTEX_INITIALIZER;
+static int locked_verify = 0;
+static void VERIFY_LOCK() {if (locked_verify) pthread_mutex_lock(&verify_lock);}
+static void VERIFY_UNLOCK() {if (locked_verify) pthread_mutex_unlock(&verify_lock);}
+
+pthread_mutex_t failure_count_lock = PTHREAD_MUTEX_INITIALIZER;
+long failure_count = 0;
+static void
+failure()
+{
+ pthread_mutex_lock(&failure_count_lock);
+ failure_count++;
+ pthread_mutex_unlock(&failure_count_lock);
+}
+
+static void *
+thread_main(void *argp)
+{
+ struct thread_args *args = argp;
+ unsigned char *signature;
+ unsigned int signature_len, signature_alloc_len;
+ int ret, i;
+
+ signature_alloc_len = args->signature_len;
+ if (RSA_size(args->rsa) > signature_alloc_len) {
+ signature_alloc_len = RSA_size(args->rsa);
+ }
+ signature = malloc(signature_alloc_len);
+ if (signature == NULL) {
+ fprintf(stderr, "Skipping checks in thread %lu -- %s.\n",
+ (unsigned long) pthread_self(), strerror(errno));
+ pthread_exit(0);
+ return NULL;
+ }
+ for (i = 0; i < ITERATION_COUNT; i++) {
+ signature_len = signature_alloc_len;
+ SIGN_LOCK();
+ ret = RSA_check_key(args->rsa);
+ ERR_print_errors_fp(stdout);
+ if (ret != 1) {
+ failure();
+ break;
+ }
+ ret = RSA_sign(args->digest_type,
+ args->digest,
+ args->digest_len,
+ signature, &signature_len,
+ args->rsa);
+ SIGN_UNLOCK();
+ ERR_print_errors_fp(stdout);
+ if (ret != 1) {
+ failure();
+ break;
+ }
+
+ VERIFY_LOCK();
+ ret = RSA_verify(args->digest_type,
+ args->digest,
+ args->digest_len,
+ signature, signature_len,
+ args->rsa);
+ VERIFY_UNLOCK();
+ if (ret != 1) {
+ fprintf(stderr,
+ "Signature from thread %lu(%d) fails "
+ "verification (passed in thread #%lu)!\n",
+ (long) pthread_self(), i,
+ (long) args->main_thread);
+ ERR_print_errors_fp(stdout);
+ failure();
+ continue;
+ }
+ if (print) {
+ fprintf(stderr, ">%d\n", i);
+ }
+ }
+ free(signature);
+
+ pthread_exit(0);
+
+ return NULL;
+}
+
+unsigned char *
+xmemdup(unsigned char *s, size_t len)
+{
+ unsigned char *r;
+ r = malloc(len);
+ if (r == NULL) {
+ fprintf(stderr, "Out of memory.\n");
+ ERR_print_errors_fp(stdout);
+ assert(r != NULL);
+ }
+ memcpy(r, s, len);
+ return r;
+}
+
+int
+main(int argc, char **argv)
+{
+ RSA *rsa;
+ MD5_CTX md5;
+ int fd, i;
+ pthread_t threads[MAX_THREAD_COUNT];
+ int thread_count = 1000;
+ unsigned char *message, *digest;
+ unsigned int message_len, digest_len;
+ unsigned char *correct_signature;
+ unsigned int correct_siglen, ret;
+ struct thread_args master_args, *args;
+ int sync = 0, seed = 0;
+ int again = 1;
+#ifdef USE_ENGINE
+ char *engine = NULL;
+ ENGINE *e = NULL;
+#endif
+
+ pthread_mutex_init(&failure_count_lock, NULL);
+
+ for (i = 1; i < argc; i++) {
+ if (strcmp(argv[i], "--seed") == 0) {
+ printf("Seeding PRNG.\n");
+ seed++;
+ } else
+ if (strcmp(argv[i], "--sync") == 0) {
+ printf("Running synchronized.\n");
+ sync++;
+ } else
+ if ((strcmp(argv[i], "--threads") == 0) && (i < argc - 1)) {
+ i++;
+ thread_count = atol(argv[i]);
+ if (thread_count > MAX_THREAD_COUNT) {
+ thread_count = MAX_THREAD_COUNT;
+ }
+ printf("Starting %d threads.\n", thread_count);
+ sync++;
+ } else
+ if (strcmp(argv[i], "--sign") == 0) {
+ printf("Locking signing.\n");
+ locked_sign++;
+ } else
+ if (strcmp(argv[i], "--verify") == 0) {
+ printf("Locking verifies.\n");
+ locked_verify++;
+ } else
+ if (strcmp(argv[i], "--print") == 0) {
+ printf("Tracing.\n");
+ print++;
+#ifdef USE_ENGINE
+ } else
+ if ((strcmp(argv[i], "--engine") == 0) && (i < argc - 1)) {
+ printf("Using engine \"%s\".\n", argv[i + 1]);
+ engine = argv[i + 1];
+ i++;
+#endif
+ } else {
+ printf("Bad argument: %s\n", argv[i]);
+ return 1;
+ }
+ }
+
+ /* Get some random data to sign. */
+ fd = open("/dev/urandom", O_RDONLY);
+ if (fd == -1) {
+ fprintf(stderr, "Error opening /dev/urandom: %s\n",
+ strerror(errno));
+ }
+
+ if (print) {
+ fprintf(stderr, "Reading random data.\n");
+ }
+ message = malloc(message_len = 9371);
+ read(fd, message, message_len);
+ close(fd);
+
+ /* Initialize the SSL library and set up thread-safe locking. */
+ ERR_load_crypto_strings();
+ SSL_library_init();
+ mutex_locks = malloc(sizeof(pthread_mutex_t) * CRYPTO_num_locks());
+ for (i = 0; i < CRYPTO_num_locks(); i++) {
+ pthread_mutex_init(&mutex_locks[i], NULL);
+ }
+ CRYPTO_set_id_callback(thread_id_cb);
+ CRYPTO_set_locking_callback(lock_cb);
+ ERR_print_errors_fp(stdout);
+
+ /* Seed the PRNG if we were asked to do so. */
+ if (seed) {
+ if (print) {
+ fprintf(stderr, "Seeding PRNG.\n");
+ }
+ RAND_add(message, message_len, message_len);
+ ERR_print_errors_fp(stdout);
+ }
+
+ /* Turn on a hardware crypto device if asked to do so. */
+#ifdef USE_ENGINE
+ if (engine) {
+#if OPENSSL_VERSION_NUMBER >= 0x0090700fL
+ ENGINE_load_builtin_engines();
+#endif
+ if (print) {
+ fprintf(stderr, "Initializing \"%s\" engine.\n",
+ engine);
+ }
+ e = ENGINE_by_id(engine);
+ ERR_print_errors_fp(stdout);
+ if (e) {
+ i = ENGINE_init(e);
+ ERR_print_errors_fp(stdout);
+ i = ENGINE_set_default_RSA(e);
+ ERR_print_errors_fp(stdout);
+ }
+ }
+#endif
+
+ /* Compute the digest for the signature. */
+ if (print) {
+ fprintf(stderr, "Computing digest.\n");
+ }
+ digest = malloc(digest_len = MD5_DIGEST_LENGTH);
+ MD5_Init(&md5);
+ MD5_Update(&md5, message, message_len);
+ MD5_Final(digest, &md5);
+
+ /* Generate a signing key. */
+ if (print) {
+ fprintf(stderr, "Generating key.\n");
+ }
+ rsa = RSA_generate_key(4096, 3, NULL, NULL);
+ ERR_print_errors_fp(stdout);
+ if (rsa == NULL) {
+ _exit(1);
+ }
+
+ /* Sign the data. */
+ correct_siglen = RSA_size(rsa);
+ correct_signature = malloc(correct_siglen);
+ for (i = 0; i < MAIN_COUNT; i++) {
+ if (print) {
+ fprintf(stderr, "Signing data (%d).\n", i);
+ }
+ ret = RSA_check_key(rsa);
+ ERR_print_errors_fp(stdout);
+ if (ret != 1) {
+ failure();
+ }
+ correct_siglen = RSA_size(rsa);
+ ret = RSA_sign(NID_md5, digest, digest_len,
+ correct_signature, &correct_siglen,
+ rsa);
+ ERR_print_errors_fp(stdout);
+ if (ret != 1) {
+ _exit(2);
+ }
+ if (print) {
+ fprintf(stderr, "Verifying data (%d).\n", i);
+ }
+ ret = RSA_verify(NID_md5, digest, digest_len,
+ correct_signature, correct_siglen,
+ rsa);
+ if (ret != 1) {
+ _exit(2);
+ }
+ }
+
+ /* Collect up the inforamtion which other threads will need for
+ * comparing their signature results with ours. */
+ master_args.rsa = rsa;
+ master_args.digest_type = NID_md5;
+ master_args.digest = digest;
+ master_args.digest_len = digest_len;
+ master_args.signature = correct_signature;
+ master_args.signature_len = correct_siglen;
+ master_args.main_thread = pthread_self();
+
+ fprintf(stdout, "Performing %d signatures in each of %d threads "
+ "(%d, %d).\n", ITERATION_COUNT, thread_count,
+ digest_len, correct_siglen);
+ fflush(NULL);
+
+ /* Start up all of the threads. */
+ for (i = 0; i < thread_count; i++) {
+ args = malloc(sizeof(struct thread_args));
+ args->rsa = RSAPrivateKey_dup(master_args.rsa);
+ args->digest_type = master_args.digest_type;
+ args->digest_len = master_args.digest_len;
+ args->digest = xmemdup(master_args.digest, args->digest_len);
+ args->signature_len = master_args.signature_len;
+ args->signature = xmemdup(master_args.signature,
+ args->signature_len);
+ args->main_thread = pthread_self();
+ ret = pthread_create(&threads[i], NULL, thread_main, args);
+ while ((ret != 0) && (errno == EAGAIN)) {
+ ret = pthread_create(&threads[i], NULL,
+ thread_main, &args);
+ fprintf(stderr, "Thread limit hit at %d.\n", i);
+ }
+ if (ret != 0) {
+ fprintf(stderr, "Unable to create thread %d: %s.\n",
+ i, strerror(errno));
+ threads[i] = -1;
+ } else {
+ if (sync) {
+ ret = pthread_join(threads[i], NULL);
+ assert(ret == 0);
+ }
+ if (print) {
+ fprintf(stderr, "%d\n", i);
+ }
+ }
+ }
+
+ /* Wait for all threads to complete. So long as we can find an
+ * unjoined thread, keep joining threads. */
+ do {
+ again = 0;
+ for (i = 0; i < thread_count; i++) {
+ /* If we have an unterminated thread, join it. */
+ if (threads[i] != -1) {
+ again = 1;
+ if (print) {
+ fprintf(stderr, "Joining thread %d.\n",
+ i);
+ }
+ pthread_join(threads[i], NULL);
+ threads[i] = -1;
+ break;
+ }
+ }
+ } while (again == 1);
+
+ fprintf(stderr, "%ld failures\n", failure_count);
+
+ return (failure_count != 0);
+}
git.annexia.org / fedora-mingw.git / blobdiff