From: Loup Vaillant <loup@loup-vaillant.fr>
Date: Sun, 24 Nov 2019 21:39:22 +0000 (+0100)
Subject: Fixed XChacha20 bug (wrong key)
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=1130e115006eb7a4ec71140e1a429bc845a4d9cc;p=Monocypher.git

Fixed XChacha20 bug (wrong key)
---

diff --git a/src/monocypher.c b/src/monocypher.c
index 6b2f50a..a1fc4a0 100644
--- a/src/monocypher.c
+++ b/src/monocypher.c
@@ -255,7 +255,9 @@ void crypto_xchacha20_ctr(u8 *cipher_text, const u8 *plain_text,
 {
     u8 sub_key[32];
     crypto_hchacha20(sub_key, key, nonce);
-    crypto_chacha20_ctr(cipher_text, plain_text, text_size, key, nonce+16, ctr);
+    crypto_chacha20_ctr(cipher_text, plain_text, text_size,
+                        sub_key, nonce+16, ctr);
+    WIPE_BUFFER(sub_key);
 }
 
 void crypto_chacha20(u8 *cipher_text, const u8 *plain_text, size_t text_size,