From: Kazuki Yamaguchi <k@rhe.jp>
Date: Thu, 29 Dec 2016 15:59:56 +0000 (+0900)
Subject: Add missing flags for EVP_chacha20()
X-Git-Tag: OpenSSL_1_1_1-pre1~2627
X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff_plain;h=c83680a04aac7a15e6ac48ed732b8322c4c9d49a

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().

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2156)
---

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,