X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=inline;f=lib%2Fentropy.c;h=f9808553dc26f9ad150dfd2d150555b1f30e46f9;hb=0ef165ecb57943e17a8ee8270df68ffb8d032e29;hp=02f56e0f447ab15fde978e818985ecb6b1f4501a;hpb=10a89ef04df5669c5cdd02f786150a7ab8454e01;p=sliver-openvswitch.git

diff --git a/lib/entropy.c b/lib/entropy.c
index 02f56e0f4..f9808553d 100644
--- a/lib/entropy.c
+++ b/lib/entropy.c
@@ -20,6 +20,9 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <unistd.h>
+#ifdef _WIN32
+#include <Wincrypt.h>
+#endif
 
 #include "socket-util.h"
 #include "vlog.h"
@@ -33,6 +36,7 @@ static const char urandom[] = "/dev/urandom";
 int
 get_entropy(void *buffer, size_t n)
 {
+#ifndef _WIN32
     size_t bytes_read;
     int error;
     int fd;
@@ -49,6 +53,19 @@ get_entropy(void *buffer, size_t n)
     if (error) {
         VLOG_ERR("%s: read error (%s)", urandom, ovs_retval_to_string(error));
     }
+#else
+    int error = 0;
+    HCRYPTPROV   crypt_prov = 0;
+
+    CryptAcquireContext(&crypt_prov, NULL, NULL,
+                        PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
+    if (!CryptGenRandom(crypt_prov, n, buffer)) {
+        VLOG_ERR("CryptGenRandom: read error (%s)", ovs_lasterror_to_string());
+        error = EINVAL;
+    }
+
+    CryptReleaseContext(crypt_prov, 0);
+#endif
     return error;
 }