Merge branch 'develop' of gitlab.demlabs.net:dap/dap-sdk into develop

crypto/src/sphincsplus/randombytes.c

@@ -2,17 +2,31 @@
 This code was taken from the SPHINCS reference implementation and is public domain.
 */
 
-#include <fcntl.h>
-#include <unistd.h>
+#if defined(_WIN32)
+    #include <windows.h>
+#else
+    #include <fcntl.h>
+    #include <unistd.h>
+    #include <pthread.h>
+    static _Thread_local int fd = -1;
+#endif
 
 #include "randombytes.h"
 
-static int fd = -1;
 
 void randombytes(unsigned char *x, unsigned long long xlen)
 {
+#if defined(_WIN32)
+    HCRYPTPROV p;
+    if (CryptAcquireContext(&p, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT) == FALSE) {
+      return;
+    }
+    if (CryptGenRandom(p, xlen, (BYTE*)x) == FALSE) {
+      return;
+    }
+    CryptReleaseContext(p, 0);
+#else
     unsigned long long i;
-
     if (fd == -1) {
         for (;;) {
             fd = open("/dev/urandom", O_RDONLY);
@@ -22,7 +36,6 @@ void randombytes(unsigned char *x, unsigned long long xlen)
             sleep(1);
         }
     }
-
     while (xlen > 0) {
         if (xlen < 1048576) {
             i = xlen;
@@ -40,4 +53,5 @@ void randombytes(unsigned char *x, unsigned long long xlen)
         x += i;
         xlen -= i;
     }
+#endif
 }