diff options
Diffstat (limited to 'roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/secmemtest.c')
| -rw-r--r-- | roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/secmemtest.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/secmemtest.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/secmemtest.c new file mode 100644 index 000000000..42aeb5d0c --- /dev/null +++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/test/secmemtest.c @@ -0,0 +1,183 @@ +/* + * Copyright 2015-2018 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <openssl/crypto.h> + +#include "testutil.h" +#include "../e_os.h" + +static int test_sec_mem(void) +{ +#ifdef OPENSSL_SECURE_MEMORY + int testresult = 0; + char *p = NULL, *q = NULL, *r = NULL, *s = NULL; + + TEST_info("Secure memory is implemented."); + + s = OPENSSL_secure_malloc(20); + /* s = non-secure 20 */ + if (!TEST_ptr(s) + || !TEST_false(CRYPTO_secure_allocated(s))) + goto end; + r = OPENSSL_secure_malloc(20); + /* r = non-secure 20, s = non-secure 20 */ + if (!TEST_ptr(r) + || !TEST_true(CRYPTO_secure_malloc_init(4096, 32)) + || !TEST_false(CRYPTO_secure_allocated(r))) + goto end; + p = OPENSSL_secure_malloc(20); + if (!TEST_ptr(p) + /* r = non-secure 20, p = secure 20, s = non-secure 20 */ + || !TEST_true(CRYPTO_secure_allocated(p)) + /* 20 secure -> 32-byte minimum allocation unit */ + || !TEST_size_t_eq(CRYPTO_secure_used(), 32)) + goto end; + q = OPENSSL_malloc(20); + if (!TEST_ptr(q)) + goto end; + /* r = non-secure 20, p = secure 20, q = non-secure 20, s = non-secure 20 */ + if (!TEST_false(CRYPTO_secure_allocated(q))) + goto end; + OPENSSL_secure_clear_free(s, 20); + s = OPENSSL_secure_malloc(20); + if (!TEST_ptr(s) + /* r = non-secure 20, p = secure 20, q = non-secure 20, s = secure 20 */ + || !TEST_true(CRYPTO_secure_allocated(s)) + /* 2 * 20 secure -> 64 bytes allocated */ + || !TEST_size_t_eq(CRYPTO_secure_used(), 64)) + goto end; + OPENSSL_secure_clear_free(p, 20); + p = NULL; + /* 20 secure -> 32 bytes allocated */ + if (!TEST_size_t_eq(CRYPTO_secure_used(), 32)) + goto end; + OPENSSL_free(q); + q = NULL; + /* should not complete, as secure memory is still allocated */ + if (!TEST_false(CRYPTO_secure_malloc_done()) + || !TEST_true(CRYPTO_secure_malloc_initialized())) + goto end; + OPENSSL_secure_free(s); + s = NULL; + /* secure memory should now be 0, so done should complete */ + if (!TEST_size_t_eq(CRYPTO_secure_used(), 0) + || !TEST_true(CRYPTO_secure_malloc_done()) + || !TEST_false(CRYPTO_secure_malloc_initialized())) + goto end; + + TEST_info("Possible infinite loop: allocate more than available"); + if (!TEST_true(CRYPTO_secure_malloc_init(32768, 16))) + goto end; + TEST_ptr_null(OPENSSL_secure_malloc((size_t)-1)); + TEST_true(CRYPTO_secure_malloc_done()); + + /* + * If init fails, then initialized should be false, if not, this + * could cause an infinite loop secure_malloc, but we don't test it + */ + if (TEST_false(CRYPTO_secure_malloc_init(16, 16)) && + !TEST_false(CRYPTO_secure_malloc_initialized())) { + TEST_true(CRYPTO_secure_malloc_done()); + goto end; + } + + /*- + * There was also a possible infinite loop when the number of + * elements was 1<<31, as |int i| was set to that, which is a + * negative number. However, it requires minimum input values: + * + * CRYPTO_secure_malloc_init((size_t)1<<34, (size_t)1<<4); + * + * Which really only works on 64-bit systems, since it took 16 GB + * secure memory arena to trigger the problem. It naturally takes + * corresponding amount of available virtual and physical memory + * for test to be feasible/representative. Since we can't assume + * that every system is equipped with that much memory, the test + * remains disabled. If the reader of this comment really wants + * to make sure that infinite loop is fixed, they can enable the + * code below. + */ +# if 0 + /*- + * On Linux and BSD this test has a chance to complete in minimal + * time and with minimum side effects, because mlock is likely to + * fail because of RLIMIT_MEMLOCK, which is customarily [much] + * smaller than 16GB. In other words Linux and BSD users can be + * limited by virtual space alone... + */ + if (sizeof(size_t) > 4) { + TEST_info("Possible infinite loop: 1<<31 limit"); + if (TEST_true(CRYPTO_secure_malloc_init((size_t)1<<34, (size_t)1<<4) != 0)) + TEST_true(CRYPTO_secure_malloc_done()); + } +# endif + + /* this can complete - it was not really secure */ + testresult = 1; + end: + OPENSSL_secure_free(p); + OPENSSL_free(q); + OPENSSL_secure_free(r); + OPENSSL_secure_free(s); + return testresult; +#else + TEST_info("Secure memory is *not* implemented."); + /* Should fail. */ + return TEST_false(CRYPTO_secure_malloc_init(4096, 32)); +#endif +} + +static int test_sec_mem_clear(void) +{ +#ifdef OPENSSL_SECURE_MEMORY + const int size = 64; + unsigned char *p = NULL; + int i, res = 0; + + if (!TEST_true(CRYPTO_secure_malloc_init(4096, 32)) + || !TEST_ptr(p = OPENSSL_secure_malloc(size))) + goto err; + + for (i = 0; i < size; i++) + if (!TEST_uchar_eq(p[i], 0)) + goto err; + + for (i = 0; i < size; i++) + p[i] = (unsigned char)(i + ' ' + 1); + + OPENSSL_secure_free(p); + + /* + * A deliberate use after free here to verify that the memory has been + * cleared properly. Since secure free doesn't return the memory to + * libc's memory pool, it technically isn't freed. However, the header + * bytes have to be skipped and these consist of two pointers in the + * current implementation. + */ + for (i = sizeof(void *) * 2; i < size; i++) + if (!TEST_uchar_eq(p[i], 0)) + return 0; + + res = 1; + p = NULL; +err: + OPENSSL_secure_free(p); + CRYPTO_secure_malloc_done(); + return res; +#else + return 1; +#endif +} + +int setup_tests(void) +{ + ADD_TEST(test_sec_mem); + ADD_TEST(test_sec_mem_clear); + return 1; +} |