sxt: sxt_reseed()

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

include/sxt/sxt.h

@@ -31,4 +31,6 @@ int sxt_init(void);
 
 int sxt_finish(void);
 
+int sxt_reseed(void);
+
 #endif /* __SXT_SXT_H__ */

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);

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;
+}