From 967f161887dd261225331e9a68c2ee55c4c55b3d Mon Sep 17 00:00:00 2001
From: Alexander Vdolainen <avdolainen@zoho.com>
Date: Wed, 6 Jul 2016 05:35:30 +0300
Subject: [PATCH] sxt: sxt_reseed()

---
 include/sxt/lcrypt.h |  1 +
 include/sxt/sxt.h    |  2 ++
 sxt/core.c           |  5 +++++
 sxt/lcrypt.c         | 12 ++++++++++++
 4 files changed, 20 insertions(+)

diff --git a/include/sxt/lcrypt.h b/include/sxt/lcrypt.h
index 5f40267..c8319fb 100644
--- a/include/sxt/lcrypt.h
+++ b/include/sxt/lcrypt.h
@@ -51,5 +51,6 @@ SHA512CTX sha512_init(void);
 void sha512_update(SHA512CTX c, const void *data, unsigned long len);
 void sha512_final(unsigned char *md, SHA512CTX c);
 
+int lcrypt_reseed(void);
 
 #endif
diff --git a/include/sxt/sxt.h b/include/sxt/sxt.h
index 3beb949..a119c75 100644
--- a/include/sxt/sxt.h
+++ b/include/sxt/sxt.h
@@ -31,4 +31,6 @@ int sxt_init(void);
 
 int sxt_finish(void);
 
+int sxt_reseed(void);
+
 #endif /* __SXT_SXT_H__ */
diff --git a/sxt/core.c b/sxt/core.c
index a708706..a2600b2 100644
--- a/sxt/core.c
+++ b/sxt/core.c
@@ -72,6 +72,11 @@ int sxt_finish(void)
   return 0;
 }
 
+int sxt_reseed(void)
+{
+  return lcrypt_reseed();
+}
+
 int sxt_get_random(void *data, int len, int pseudo)
 {
   if(pseudo) return RAND_bytes(data, len);
diff --git a/sxt/lcrypt.c b/sxt/lcrypt.c
index 84c3902..c66f922 100644
--- a/sxt/lcrypt.c
+++ b/sxt/lcrypt.c
@@ -27,9 +27,11 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/time.h>
 
 #include <openssl/aes.h>
 #include <openssl/blowfish.h>
+#include <openssl/rand.h>
 
 #include <sxt/errno.h>
 #include <sxt/ciphers.h>
@@ -171,3 +173,13 @@ int lcrypt_init_ciphers(void)
   return r;
 }
 
+/* misc */
+int lcrypt_reseed(void)
+{
+#ifndef WIN32
+  struct timeval tv;
+  gettimeofday(&tv, NULL);
+  RAND_add(&tv, sizeof(struct timeval), 0.0);
+#endif
+  return SXT_SUCCESS;
+}