diff options
Diffstat (limited to 'librecrypt_fill_with_random_.c')
| -rw-r--r-- | librecrypt_fill_with_random_.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/librecrypt_fill_with_random_.c b/librecrypt_fill_with_random_.c index 1361652..a1acc84 100644 --- a/librecrypt_fill_with_random_.c +++ b/librecrypt_fill_with_random_.c @@ -106,8 +106,17 @@ main(void) EXPECT(librecrypt_fill_with_random_(buf2, sizeof(buf1), NULL, NULL) == 0); EXPECT(memcmp(buf1, buf2, sizeof(buf1))); + /* Check that it is not writing too much */ + CANARY_FILL(buf1); + CANARY_FILL(buf2); + EXPECT(librecrypt_fill_with_random_(buf1, sizeof(buf1) / 2u, NULL, NULL) == 0); + EXPECT(librecrypt_fill_with_random_(buf2, sizeof(buf2) / 2u, NULL, NULL) == 0); + EXPECT(memcmp(buf1, buf2, sizeof(buf1) / 2u)); + CANARY_CHECK(buf1, sizeof(buf1) / 2u); + CANARY_CHECK(buf2, sizeof(buf2) / 2u); + /* Check stateless all-at-once RNG */ - memset(buf1, 99, sizeof(buf1)); + CANARY_FILL(buf1); errno = 0; EXPECT(librecrypt_fill_with_random_(buf1, sizeof(buf1), &zero, NULL) == 0); EXPECT(errno == 0); @@ -115,7 +124,7 @@ main(void) EXPECT(!buf1[i]); /* Check stateful chunked RNG (importantly, chunks are smaller than pattern) */ - memset(buf1, 99, sizeof(buf1)); + CANARY_FILL(buf1); s = 0u; errno = 0; EXPECT(librecrypt_fill_with_random_(buf1, sizeof(buf1), &seq, &s) == 0); @@ -124,7 +133,7 @@ main(void) EXPECT(buf1[i] == s); /* Check stateful one-byte-per-call RNG */ - memset(buf1, 99, sizeof(buf1)); + CANARY_FILL(buf1); s = 0u; errno = 0; EXPECT(librecrypt_fill_with_random_(buf1, sizeof(buf1), &next, &s) == 0); @@ -133,13 +142,12 @@ main(void) EXPECT(buf1[i] == s); /* Check failure in RNG */ - memset(buf1, 99, sizeof(buf1)); + CANARY_FILL(buf1); s = 0u; errno = 0; EXPECT(librecrypt_fill_with_random_(buf1, sizeof(buf1), &failer, NULL) == -1); EXPECT(errno == EDOM); - for (s = 0u, i = 0u; i < sizeof(buf1); i++, s++) - EXPECT(buf1[i] == 99); + CANARY_CHECK(buf1, 0u); /* Check function abort(3)s if RNG returns 0 */ EXPECT_ABORT(rv = librecrypt_fill_with_random_(buf1, sizeof(buf1), &zero_ret, NULL)); |