X-Git-Url: http://andersk.mit.edu/gitweb/gssapi-openssh.git/blobdiff_plain/30460aeb3d3c027b85eba1e4d45de75fb4b9d356..HEAD:/openssh/kexdhs.c

diff --git a/openssh/kexdhs.c b/openssh/kexdhs.c
index 93ec97f..a6719f6 100644
--- a/openssh/kexdhs.c
+++ b/openssh/kexdhs.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kexdhs.c,v 1.7 2006/08/03 03:34:42 deraadt Exp $ */
+/* $OpenBSD: kexdhs.c,v 1.10 2009/06/21 07:37:15 dtucker Exp $ */
 /*
  * Copyright (c) 2001 Markus Friedl.  All rights reserved.
  *
@@ -52,8 +52,8 @@ kexdh_server(Kex *kex)
 	DH *dh;
 	Key *server_host_key;
 	u_char *kbuf, *hash, *signature = NULL, *server_host_key_blob = NULL;
-	u_int sbloblen, klen, kout, hashlen;
-	u_int slen;
+	u_int sbloblen, klen, hashlen, slen;
+	int kout;
 
 	/* generate server DH public key */
 	switch (kex->kex_type) {
@@ -101,13 +101,15 @@ kexdh_server(Kex *kex)
 
 	klen = DH_size(dh);
 	kbuf = xmalloc(klen);
-	kout = DH_compute_key(kbuf, dh_client_pub, dh);
+	if ((kout = DH_compute_key(kbuf, dh_client_pub, dh)) < 0)
+		fatal("DH_compute_key: failed");
 #ifdef DEBUG_KEXDH
 	dump_digest("shared secret", kbuf, kout);
 #endif
 	if ((shared_secret = BN_new()) == NULL)
 		fatal("kexdh_server: BN_new failed");
-	BN_bin2bn(kbuf, kout, shared_secret);
+	if (BN_bin2bn(kbuf, kout, shared_secret) == NULL)
+		fatal("kexdh_server: BN_bin2bn failed");
 	memset(kbuf, 0, klen);
 	xfree(kbuf);
 
@@ -135,7 +137,9 @@ kexdh_server(Kex *kex)
 	}
 
 	/* sign H */
-	PRIVSEP(key_sign(server_host_key, &signature, &slen, hash, hashlen));
+	if (PRIVSEP(key_sign(server_host_key, &signature, &slen, hash,
+	    hashlen)) < 0)
+		fatal("kexdh_server: key_sign failed");
 
 	/* destroy_sensitive_data(); */