commit 84590bc78f196d35fc8f6bb945ef4ed724a01c4d
author Marc Hoersken <info@marc-hoersken.de> Mon Mar 23 22:07:39 2015 +0100
committer Marc Hoersken <info@marc-hoersken.de> Mon Mar 23 22:07:39 2015 +0100
tree 07b8a67f487aff60c417f22bbf37d4cde55439bf
parent 864950cf16648a56dd4737da5ddd8a7126de4fac

openssl.c: fix possible segfault in case EVP_DigestInit fails

src/openssl.c

diff --git a/src/openssl.c b/src/openssl.c
index 2e31472..42cee2d 100644
--- a/src/openssl.c
+++ b/src/openssl.c
@@ -577,9 +577,10 @@
     EVP_MD_CTX ctx;
 
     EVP_MD_CTX_init(&ctx);
-    EVP_DigestInit(&ctx, EVP_get_digestbyname("sha1"));
-    EVP_DigestUpdate(&ctx, message, len);
-    EVP_DigestFinal(&ctx, out, NULL);
+    if (EVP_DigestInit(&ctx, EVP_get_digestbyname("sha1"))) {
+        EVP_DigestUpdate(&ctx, message, len);
+        EVP_DigestFinal(&ctx, out, NULL);
+    }
 }
 
 int
@@ -596,9 +597,10 @@
     EVP_MD_CTX ctx;
 
     EVP_MD_CTX_init(&ctx);
-    EVP_DigestInit(&ctx, EVP_get_digestbyname("md5"));
-    EVP_DigestUpdate(&ctx, message, len);
-    EVP_DigestFinal(&ctx, out, NULL);
+    if (EVP_DigestInit(&ctx, EVP_get_digestbyname("md5"))) {
+        EVP_DigestUpdate(&ctx, message, len);
+        EVP_DigestFinal(&ctx, out, NULL);
+    }
 }
 
 static unsigned char *