From a002e355efa5c6f1d75298124fe1296454053393 Mon Sep 17 00:00:00 2001
From: Kazuki Yamaguchi <k@rhe.jp>
Date: Fri, 30 Dec 2016 00:59:56 +0900
Subject: Add missing flags for EVP_chacha20()

ChaCha20 code uses its own custom cipher_data. Add EVP_CIPH_CUSTOM_IV
and EVP_CIPH_ALWAYS_CALL_INIT so that the key and the iv can be set by
different calls of EVP_CipherInit_ex().
---
 crypto/evp/e_chacha20_poly1305.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/evp/e_chacha20_poly1305.c b/crypto/evp/e_chacha20_poly1305.c
index 952bd3fca7..befd805e35 100644
--- a/crypto/evp/e_chacha20_poly1305.c
+++ b/crypto/evp/e_chacha20_poly1305.c
@@ -127,7 +127,7 @@ static const EVP_CIPHER chacha20 = {
     1,                      /* block_size */
     CHACHA_KEY_SIZE,        /* key_len */
     CHACHA_CTR_SIZE,        /* iv_len, 128-bit counter in the context */
-    0,                      /* flags */
+    EVP_CIPH_CUSTOM_IV | EVP_CIPH_ALWAYS_CALL_INIT,
     chacha_init_key,
     chacha_cipher,
     NULL,
-- 
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