test/secmemtest.c

   1 /*
   2  * Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/crypto.h>
  11
  12 #define perror_line()    perror_line1(__LINE__)
  13 #define perror_line1(l)  perror_line2(l)
  14 #define perror_line2(l)  perror("failed " #l)
  15
  16 int main(int argc, char **argv)
  17 {
  18 #if defined(OPENSSL_SYS_LINUX) || defined(OPENSSL_SYS_UNIX)
  19     char *p = NULL, *q = NULL, *r = NULL, *s = NULL;
  20
  21     r = OPENSSL_secure_malloc(20);
  22     /* r = non-secure 20 */
  23     if (r == NULL) {
  24         perror_line();
  25         return 1;
  26     }
  27     if (!CRYPTO_secure_malloc_init(4096, 32)) {
  28         perror_line();
  29         return 1;
  30     }
  31     if (CRYPTO_secure_allocated(r)) {
  32         perror_line();
  33         return 1;
  34     }
  35     p = OPENSSL_secure_malloc(20);
  36     /* r = non-secure 20, p = secure 20 */
  37     if (!CRYPTO_secure_allocated(p)) {
  38         perror_line();
  39         return 1;
  40     }
  41     /* 20 secure -> 32-byte minimum allocaton unit */
  42     if (CRYPTO_secure_used() != 32) {
  43         perror_line();
  44         return 1;
  45     }
  46     q = OPENSSL_malloc(20);
  47     /* r = non-secure 20, p = secure 20, q = non-secure 20 */
  48     if (CRYPTO_secure_allocated(q)) {
  49         perror_line();
  50         return 1;
  51     }
  52     s = OPENSSL_secure_malloc(20);
  53     /* r = non-secure 20, p = secure 20, q = non-secure 20, s = secure 20 */
  54     if (!CRYPTO_secure_allocated(s)) {
  55         perror_line();
  56         return 1;
  57     }
  58     /* 2 * 20 secure -> 64 bytes allocated */
  59     if (CRYPTO_secure_used() != 64) {
  60         perror_line();
  61         return 1;
  62     }
  63     OPENSSL_secure_free(p);
  64     /* 20 secure -> 32 bytes allocated */
  65     if (CRYPTO_secure_used() != 32) {
  66         perror_line();
  67         return 1;
  68     }
  69     OPENSSL_free(q);
  70     /* should not complete, as secure memory is still allocated */
  71     if (CRYPTO_secure_malloc_done()) {
  72         perror_line();
  73         return 1;
  74     }
  75     if (!CRYPTO_secure_malloc_initialized()) {
  76         perror_line();
  77         return 1;
  78     }
  79     OPENSSL_secure_free(s);
  80     /* secure memory should now be 0, so done should complete */
  81     if (CRYPTO_secure_used() != 0) {
  82         perror_line();
  83         return 1;
  84     }
  85     if (!CRYPTO_secure_malloc_done()) {
  86         perror_line();
  87         return 1;
  88     }
  89     if (CRYPTO_secure_malloc_initialized()) {
  90         perror_line();
  91         return 1;
  92     }
  93     /* this can complete - it was not really secure */
  94     OPENSSL_secure_free(r);
  95 #else
  96     /* Should fail. */
  97     if (CRYPTO_secure_malloc_init(4096, 32)) {
  98         perror_line();
  99         return 1;
 100     }
 101 #endif
 102     return 0;
 103 }