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Explicitly test AES contexts with different alignments

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Don't leave it up to chance.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2023-03-16 14:54:48 +01:00
parent 5fcdf49f0e
commit 844f65dc65
1 changed files with 76 additions and 2 deletions
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78
tests/suites/test_suite_aes.function
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@ -526,10 +526,84 @@ void aes_misc_params()
/* BEGIN_CASE */
void aes_ecb_copy_context(data_t *key)
{
mbedtls_aes_context ctx1, ctx2, ctx3;
if (!test_copy(key, &ctx1, &ctx2, &ctx3)) {
/* We test context copying multiple times, with different alignments
* of the original and of the copies. */
void *src = NULL; // Memory block containing the original context
void *enc = NULL; // Memory block containing the copy doing encryption
void *dec = NULL; // Memory block containing the copy doing decryption
struct align1 {
char bump;
mbedtls_aes_context ctx;
};
/* All peak alignment */
ASSERT_ALLOC(src, sizeof(mbedtls_aes_context));
ASSERT_ALLOC(enc, sizeof(mbedtls_aes_context));
ASSERT_ALLOC(dec, sizeof(mbedtls_aes_context));
if (!test_copy(key, src, enc, dec)) {
goto exit;
}
mbedtls_free(src);
src = NULL;
mbedtls_free(enc);
enc = NULL;
mbedtls_free(dec);
dec = NULL;
/* Original shifted */
ASSERT_ALLOC(src, sizeof(struct align1));
ASSERT_ALLOC(enc, sizeof(mbedtls_aes_context));
ASSERT_ALLOC(dec, sizeof(mbedtls_aes_context));
if (!test_copy(key, &((struct align1 *) src)->ctx, enc, dec)) {
goto exit;
}
mbedtls_free(src);
src = NULL;
mbedtls_free(enc);
enc = NULL;
mbedtls_free(dec);
dec = NULL;
/* Copies shifted */
ASSERT_ALLOC(src, sizeof(mbedtls_aes_context));
ASSERT_ALLOC(enc, sizeof(struct align1));
ASSERT_ALLOC(dec, sizeof(struct align1));
if (!test_copy(key,
src,
&((struct align1 *) enc)->ctx,
&((struct align1 *) dec)->ctx)) {
goto exit;
}
mbedtls_free(src);
src = NULL;
mbedtls_free(enc);
enc = NULL;
mbedtls_free(dec);
dec = NULL;
/* Source and copies shifted */
ASSERT_ALLOC(src, sizeof(struct align1));
ASSERT_ALLOC(enc, sizeof(struct align1));
ASSERT_ALLOC(dec, sizeof(struct align1));
if (!test_copy(key,
&((struct align1 *) src)->ctx,
&((struct align1 *) enc)->ctx,
&((struct align1 *) dec)->ctx)) {
goto exit;
}
mbedtls_free(src);
src = NULL;
mbedtls_free(enc);
enc = NULL;
mbedtls_free(dec);
dec = NULL;
exit:
mbedtls_free(src);
mbedtls_free(enc);
mbedtls_free(dec);
}
/* END_CASE */