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Code Issues 1 Releases Wiki Activity

Move keys in crypto_sign/functest.c to the heap

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Having the keys on the stack increases the stack space consumption by
quite a bit, and this in turn results in the sanitizer tests failing
for Rainbow.

Moving the keys to the heap in the test seems like a harmless change.
This commit is contained in:
Thom Wiggers 2020-02-05 12:38:08 +01:00
parent 96fb401fb3
commit 8ffb087545
No known key found for this signature in database
GPG Key ID: 001BB0A7CE26E363
1 changed files with 59 additions and 24 deletions
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83
test/crypto_sign/functest.c
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@ -3,6 +3,7 @@
#include <stddef.h> #include <stddef.h>
#include <stdint.h> #include <stdint.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h>
#include <string.h> #include <string.h>
#ifndef NTESTS #ifndef NTESTS
@ -33,6 +34,16 @@ static int check_canary(const uint8_t *d) {
return 0; return 0;
} }
/** Safe malloc */
inline static void* malloc_s(size_t size) {
void *ptr = malloc(size);
if (ptr == NULL) {
perror("Malloc failed!");
exit(1);
}
return ptr;
}
// https://stackoverflow.com/a/1489985/1711232 // https://stackoverflow.com/a/1489985/1711232
#define PASTER(x, y) x##_##y #define PASTER(x, y) x##_##y
#define EVALUATOR(x, y) PASTER(x, y) #define EVALUATOR(x, y) PASTER(x, y)
@ -52,7 +63,8 @@ static int check_canary(const uint8_t *d) {
#define RETURNS_ZERO(f) \ #define RETURNS_ZERO(f) \
if ((f) != 0) { \ if ((f) != 0) { \
puts("(f) returned non-zero returncode"); \ puts("(f) returned non-zero returncode"); \
return -1; \ res = 1; \
goto end; \
} }
// https://stackoverflow.com/a/55243651/248065 // https://stackoverflow.com/a/55243651/248065
@ -72,10 +84,10 @@ static int test_sign(void) {
* 16 extra bytes for canary * 16 extra bytes for canary
* 1 extra byte for unalignment * 1 extra byte for unalignment
*/ */
uint8_t pk_aligned[CRYPTO_PUBLICKEYBYTES + 16 + 1]; uint8_t *pk_aligned = malloc_s(CRYPTO_PUBLICKEYBYTES + 16 + 1);
uint8_t sk_aligned[CRYPTO_SECRETKEYBYTES + 16 + 1]; uint8_t *sk_aligned = malloc_s(CRYPTO_SECRETKEYBYTES + 16 + 1);
uint8_t sm_aligned[MLEN + CRYPTO_BYTES + 16 + 1]; uint8_t *sm_aligned = malloc_s(MLEN + CRYPTO_BYTES + 16 + 1);
uint8_t m_aligned[MLEN + 16 + 1]; uint8_t *m_aligned = malloc_s(MLEN + 16 + 1);
/* /*
* Make sure all pointers are odd. * Make sure all pointers are odd.
@ -91,6 +103,7 @@ static int test_sign(void) {
size_t mlen; size_t mlen;
size_t smlen; size_t smlen;
int returncode; int returncode;
int res = 0;
int i; int i;
/* /*
@ -122,7 +135,8 @@ static int test_sign(void) {
if (returncode > 0) { if (returncode > 0) {
fprintf(stderr, "ERROR return code should be < 0 on failure"); fprintf(stderr, "ERROR return code should be < 0 on failure");
} }
return 1; res = 1;
goto end;
} }
// Validate that the implementation did not touch the canary // Validate that the implementation did not touch the canary
if (check_canary(pk) || check_canary(pk + CRYPTO_PUBLICKEYBYTES + 8) || if (check_canary(pk) || check_canary(pk + CRYPTO_PUBLICKEYBYTES + 8) ||
@ -130,11 +144,17 @@ static int test_sign(void) {
check_canary(sm) || check_canary(sm + MLEN + CRYPTO_BYTES + 8) || check_canary(sm) || check_canary(sm + MLEN + CRYPTO_BYTES + 8) ||
check_canary(m) || check_canary(m + MLEN + 8)) { check_canary(m) || check_canary(m + MLEN + 8)) {
fprintf(stderr, "ERROR canary overwritten\n"); fprintf(stderr, "ERROR canary overwritten\n");
return 1; res = 1;
goto end;
} }
} }
end:
free(pk_aligned);
free(sk_aligned);
free(sm_aligned);
free(m_aligned);
return 0; return res;
} }
static int test_sign_detached(void) { static int test_sign_detached(void) {
@ -143,10 +163,10 @@ static int test_sign_detached(void) {
* 16 extra bytes for canary * 16 extra bytes for canary
* 1 extra byte for unalignment * 1 extra byte for unalignment
*/ */
uint8_t pk_aligned[CRYPTO_PUBLICKEYBYTES + 16 + 1]; uint8_t *pk_aligned = malloc_s(CRYPTO_PUBLICKEYBYTES + 16 + 1);
uint8_t sk_aligned[CRYPTO_SECRETKEYBYTES + 16 + 1]; uint8_t *sk_aligned = malloc_s(CRYPTO_SECRETKEYBYTES + 16 + 1);
uint8_t sig_aligned[CRYPTO_BYTES + 16 + 1]; uint8_t *sig_aligned = malloc_s(CRYPTO_BYTES + 16 + 1);
uint8_t m_aligned[MLEN + 16 + 1]; uint8_t *m_aligned = malloc_s(MLEN + 16 + 1);
/* /*
* Make sure all pointers are odd. * Make sure all pointers are odd.
@ -161,6 +181,7 @@ static int test_sign_detached(void) {
size_t siglen; size_t siglen;
int returncode; int returncode;
int res = 0;
int i; int i;
/* /*
@ -190,7 +211,8 @@ static int test_sign_detached(void) {
if (returncode > 0) { if (returncode > 0) {
fprintf(stderr, "ERROR return code should be < 0 on failure"); fprintf(stderr, "ERROR return code should be < 0 on failure");
} }
return 1; res = 1;
goto end;
} }
// Validate that the implementation did not touch the canary // Validate that the implementation did not touch the canary
if (check_canary(pk) || check_canary(pk + CRYPTO_PUBLICKEYBYTES + 8) || if (check_canary(pk) || check_canary(pk + CRYPTO_PUBLICKEYBYTES + 8) ||
@ -198,24 +220,31 @@ static int test_sign_detached(void) {
check_canary(sig) || check_canary(sig + CRYPTO_BYTES + 8) || check_canary(sig) || check_canary(sig + CRYPTO_BYTES + 8) ||
check_canary(m) || check_canary(m + MLEN + 8)) { check_canary(m) || check_canary(m + MLEN + 8)) {
fprintf(stderr, "ERROR canary overwritten\n"); fprintf(stderr, "ERROR canary overwritten\n");
return 1; res = 1;
goto end;
} }
} }
return 0; end:
free(pk_aligned);
free(sk_aligned);
free(sig_aligned);
free(m_aligned);
return res;
} }
static int test_wrong_pk(void) { static int test_wrong_pk(void) {
uint8_t pk[CRYPTO_PUBLICKEYBYTES]; uint8_t *pk = malloc_s(CRYPTO_PUBLICKEYBYTES);
uint8_t pk2[CRYPTO_PUBLICKEYBYTES]; uint8_t *pk2 = malloc_s(CRYPTO_PUBLICKEYBYTES);
uint8_t sk[CRYPTO_SECRETKEYBYTES]; uint8_t *sk = malloc_s(CRYPTO_SECRETKEYBYTES);
uint8_t sm[MLEN + CRYPTO_BYTES]; uint8_t *sm = malloc_s(MLEN + CRYPTO_BYTES);
uint8_t m[MLEN]; uint8_t *m = malloc_s(MLEN);
size_t mlen; size_t mlen;
size_t smlen; size_t smlen;
int returncode; int returncode, res = 0;
int i; int i;
@ -235,11 +264,17 @@ static int test_wrong_pk(void) {
if (returncode > 0) { if (returncode > 0) {
fprintf(stderr, "ERROR return code should be < 0"); fprintf(stderr, "ERROR return code should be < 0");
} }
return 1; res = 1;
goto end;
} }
} }
end:
return 0; free(pk);
free(pk2);
free(sk);
free(sm);
free(m);
return res;
} }
int main(void) { int main(void) {