From b70d741b03745118400e07238c68e26e4639686a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89rico=20Rolim?= <erico.erc@gmail.com>
Date: Sun, 13 Sep 2020 18:08:52 -0300
Subject: [PATCH] Enable IV randomization.

---
 encrypt.c | 5 +++--
 purr.h    | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/encrypt.c b/encrypt.c
index cddca30..2c6037b 100644
--- a/encrypt.c
+++ b/encrypt.c
@@ -38,18 +38,19 @@ struct mmap_file encrypt_mmap(struct mmap_file file, uint8_t **keyp, uint8_t **i
     }
 
     ssize_t err = getrandom(key, KEY_LEN, 0);
+    //ssize_t err = KEY_LEN;
     if (err != KEY_LEN) {
         fputs("getrandom() error!\n", stderr);
         return rv;
     }
-    #ifndef NO_RANDOMIZE_IV
+    #ifdef RANDOMIZE_IV
     err = getrandom(iv, IV_LEN, 0);
     memcpy(iv_throwaway, iv, IV_LEN);
     if (err != IV_LEN) {
         fputs("getrandom() error!\n", stderr);
         return rv;
     }
-    #endif /* NO_RANDOMIZE_IV */
+    #endif /* RANDOMIZE_IV */
 
     rv.data = mmap(NULL, rv.size, rv.prot, rv.flags, -1, 0);
     if (ERROR_MMAP(rv)) {
diff --git a/purr.h b/purr.h
index e305b67..a3ebe1a 100644
--- a/purr.h
+++ b/purr.h
@@ -18,7 +18,7 @@
 #define KEY_LEN 32
 #define IV_LEN br_aes_big_BLOCK_SIZE
 
-#define NO_RANDOMIZE_IV
+#define RANDOMIZE_IV
 #define ENCODE_BASE_64
 
 #define RESET_MMAP(file) do{(file).offset = 0; (file).cursor = 0}while(0);