From: Martin Willi <martin@revosec.ch>
Date: Tue, 10 Jul 2012 07:03:38 +0000 (+0200)
Subject: Make sure HMAC_Init is called before HMAC_Update, fixes crash
X-Git-Tag: 5.0.1~308
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9138f49e;p=thirdparty%2Fstrongswan.git

Make sure HMAC_Init is called before HMAC_Update, fixes crash
---

diff --git a/src/libstrongswan/plugins/openssl/openssl_hmac.c b/src/libstrongswan/plugins/openssl/openssl_hmac.c
index feeecf539d..b027e0fc3b 100644
--- a/src/libstrongswan/plugins/openssl/openssl_hmac.c
+++ b/src/libstrongswan/plugins/openssl/openssl_hmac.c
@@ -159,6 +159,11 @@ static mac_t *hmac_create(hash_algorithm_t algo)
 	}
 
 	HMAC_CTX_init(&this->hmac);
+	if (!HMAC_Init_ex(&this->hmac, NULL, 0, this->hasher, NULL))
+	{
+		destroy(this);
+		return NULL;
+	}
 
 	return &this->public;
 }