1 files changed, 38 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rand/rand_unix.c b/src/lib/libcrypto/rand/rand_unix.c
index ec09d74603..a7f66c6dfe 100644
--- a/src/lib/libcrypto/rand/rand_unix.c
+++ b/src/lib/libcrypto/rand/rand_unix.c
@@ -124,6 +124,43 @@
 #include <unistd.h>
 #include <time.h>
 
+#ifdef __OpenBSD__
+#undef DEVRANDOM
+#define DEVRANDOM "/dev/arandom"
+int RAND_poll(void)
+{
+        unsigned long l;
+        pid_t curr_pid = getpid();
+        FILE *fh;
+
+        /* Use a random entropy pool device. Linux, FreeBSD and OpenBSD
+         * have this. Use /dev/urandom if you can as /dev/random may block
+         * if it runs out of random entries.  */
+
+        if ((fh = fopen(DEVRANDOM, "r")) != NULL)
+                {
+                unsigned char tmpbuf[ENTROPY_NEEDED];
+                int n;
+
+                setvbuf(fh, NULL, _IONBF, 0);
+                n=fread((unsigned char *)tmpbuf,1,ENTROPY_NEEDED,fh);
+                fclose(fh);
+                RAND_add(tmpbuf,sizeof tmpbuf,n);
+                memset(tmpbuf,0,n);
+                }
+
+        /* put in some default random data, we need more than just this */
+        l=curr_pid;
+        RAND_add(&l,sizeof(l),0);
+        l=getuid();
+        RAND_add(&l,sizeof(l),0);
+
+        l=time(NULL);
+        RAND_add(&l,sizeof(l),0);
+
+        return 1;
+}
+#else
 int RAND_poll(void)
 {
         unsigned long l;
@@ -236,3 +273,4 @@ int RAND_poll(void)
 }
 
 #endif
+#endif