diff options
Diffstat (limited to 'node/Utils.cpp')
| -rw-r--r-- | node/Utils.cpp | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/node/Utils.cpp b/node/Utils.cpp index 608de593..c0886859 100644 --- a/node/Utils.cpp +++ b/node/Utils.cpp @@ -151,7 +151,6 @@ unsigned int Utils::unhex(const char *hex,void *buf,unsigned int len) } unsigned int Utils::unhex(const char *hex,unsigned int hexlen,void *buf,unsigned int len) - throw() { int n = 1; unsigned char c,b = 0; @@ -191,7 +190,7 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes) Mutex::Lock _l(randomLock); - // A Salsa20 instance is used to mangle whatever our base + // A Salsa20/8 instance is used to further mangle whatever our base // random source happens to be. if (!randInitialized) { randInitialized = true; @@ -208,7 +207,7 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes) { int fd = ::open("/dev/urandom",O_RDONLY); if (fd < 0) { - fprintf(stderr,"FATAL ERROR: unable to open /dev/urandom: %s"ZT_EOL_S,strerror(errno)); + fprintf(stderr,"FATAL ERROR: unable to open /dev/urandom"ZT_EOL_S); exit(-1); } if ((int)::read(fd,randbuf,sizeof(randbuf)) != (int)sizeof(randbuf)) { @@ -220,17 +219,20 @@ void Utils::getSecureRandom(void *buf,unsigned int bytes) #else #ifdef __WINDOWS__ { - char ktmp[32]; - char ivtmp[8]; - for(int i=0;i<32;++i) ktmp[i] = (char)rand(); - for(int i=0;i<8;++i) ivtmp[i] = (char)rand(); - double now = Utils::nowf(); - memcpy(ktmp,&now,sizeof(now)); - DWORD tmp = GetCurrentProcessId(); - memcpy(ktmp + sizeof(now),&tmp,sizeof(tmp)); - tmp = GetTickCount(); - memcpy(ktmp + sizeof(now) + sizeof(DWORD),&tmp,sizeof(tmp)); - Salsa20 s20tmp(ktmp,256,ivtmp,8); + struct { + double nowf; + DWORD processId; + DWORD tickCount; + uint64_t nowi; + char padding[32]; + } keyMaterial; + keyMaterial.nowf = Utils::nowf(); + keyMaterial.processId = GetCurrentProcessId(); + keyMaterial.tickCount = GetTickCount(); + keyMaterial.nowi = Utils::now(); + for(int i=0;i<sizeof(keyMaterial.padding);++i) + keyMaterial.padding[i] = (char)rand(); + Salsa20 s20tmp(&keyMaterial,256,&(keyMaterial.nowi),8); s20tmp.encrypt(randbuf,randbuf,sizeof(randbuf)); } #else |