dark/zerotiertspu
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Replace libcrypto RAND_ with our own to avoid valgrind errors.

Browse source
This commit is contained in:
Adam Ierymenko 2013-08-10 10:27:53 -04:00
parent 67acba4bc9
commit 93a7eef2a5
3 changed files with 80 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

33
selftest.cpp
View file

@ -47,8 +47,40 @@
#include "node/NodeConfig.hpp"
#include "node/Dictionary.hpp"
#include <openssl/rand.h>
using namespace ZeroTier;
// ---------------------------------------------------------------------------
// Override libcrypto default RAND_ with Utils::getSecureRandom(), which uses
// a system strong random source. This is because OpenSSL libcrypto's default
// RAND_ implementation uses uninitialized memory as one of its entropy
// sources, which plays havoc with all kinds of debuggers and auditing tools.
static void _zeroTier_rand_cleanup() {}
static void _zeroTier_rand_add(const void *buf, int num, double add_entropy) {}
static int _zeroTier_rand_status() { return 1; }
static void _zeroTier_rand_seed(const void *buf, int num) {}
static int _zeroTier_rand_bytes(unsigned char *buf, int num)
{
Utils::getSecureRandom(buf,num);
return 1;
}
static RAND_METHOD _zeroTierRandMethod = {
_zeroTier_rand_seed,
_zeroTier_rand_bytes,
_zeroTier_rand_cleanup,
_zeroTier_rand_add,
_zeroTier_rand_bytes,
_zeroTier_rand_status
};
static void _initLibCrypto()
{
RAND_set_rand_method(&_zeroTierRandMethod);
}
// ---------------------------------------------------------------------------
static unsigned char fuzzbuf[1048576];
static const char *hmacShaTV0Key = "key";
@ -332,6 +364,7 @@ int main(int argc,char **argv)
{
int r = 0;
_initLibCrypto();
srand(time(0));
r |= testCrypto();