1 files changed, 6 insertions, 7 deletions
diff --git a/src/add_threshold/tweakey.c b/src/add_threshold/tweakey.c
index f80ea86..097a79a 100644
--- a/src/add_threshold/tweakey.c
+++ b/src/add_threshold/tweakey.c
@@ -24,6 +24,7 @@ tweakey schedule, where the tweak and the key are split into two shares.
 #include <string.h>
 
 #include "constants.h"
+#include "random.h"
 #include "tweakey.h"
 
 
@@ -39,16 +40,14 @@ void tweakey_state_init(
     const uint8_t tweak[TWEAK_BYTES]
 )
 {
-    // To be replaced by real random numbers!!!
-    uint8_t SHARES_0[KEY_BYTES] = {
-        0x0f, 0x1e, 0x2d, 0x3c, 0x4b, 0x5a, 0x69, 0x78, 0x87, 0x96, 0xa5, 0xb4, 0xc3, 0xd2, 0xe1, 0xf0
-    };
+    uint8_t SHARES_0[KEY_BYTES];
+    randombytes(sizeof(SHARES_0), SHARES_0);
 
-    memcpy(TK_Y,             SHARES_0, KEY_BYTES);
-    memcpy(TK_X,             tweak, TWEAK_BYTES);
+    memcpy(TK_Y, SHARES_0, KEY_BYTES);
+    memcpy(TK_X, tweak, TWEAK_BYTES);
 
     for (size_t i=0; i<KEY_BYTES; i++){
-        TK_X[i+TWEAK_BYTES] = key[i] ^ SHARES_0[i] ;
+        TK_X[i+TWEAK_BYTES] = key[i] ^ SHARES_0[i];
     }
 }