- djm@cvs.openbsd.org 2005/11/04 05:15:59
[kex.c kex.h kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c]
remove hardcoded hash lengths in key exchange code, allowing
implementation of KEX methods with different hashes (e.g. SHA-256);
ok markus@ dtucker@ stevesk@
diff --git a/kex.h b/kex.h
index 3024a27..bbd931e 100644
--- a/kex.h
+++ b/kex.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: kex.h,v 1.37 2005/07/25 11:59:39 markus Exp $ */
+/* $OpenBSD: kex.h,v 1.38 2005/11/04 05:15:59 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
@@ -31,9 +31,9 @@
#include "cipher.h"
#include "key.h"
-#define KEX_DH1 "diffie-hellman-group1-sha1"
-#define KEX_DH14 "diffie-hellman-group14-sha1"
-#define KEX_DHGEX "diffie-hellman-group-exchange-sha1"
+#define KEX_DH1 "diffie-hellman-group1-sha1"
+#define KEX_DH14 "diffie-hellman-group14-sha1"
+#define KEX_DHGEX_SHA1 "diffie-hellman-group-exchange-sha1"
#define COMP_NONE 0
#define COMP_ZLIB 1
@@ -114,6 +114,7 @@
Buffer peer;
int done;
int flags;
+ const EVP_MD *evp_md;
char *client_version_string;
char *server_version_string;
int (*verify_host_key)(Key *);
@@ -127,7 +128,7 @@
void kex_send_kexinit(Kex *);
void kex_input_kexinit(int, u_int32_t, void *);
-void kex_derive_keys(Kex *, u_char *, BIGNUM *);
+void kex_derive_keys(Kex *, u_char *, u_int, BIGNUM *);
Newkeys *kex_get_newkeys(int);
@@ -136,12 +137,13 @@
void kexgex_client(Kex *);
void kexgex_server(Kex *);
-u_char *
+void
kex_dh_hash(char *, char *, char *, int, char *, int, u_char *, int,
- BIGNUM *, BIGNUM *, BIGNUM *);
-u_char *
-kexgex_hash(char *, char *, char *, int, char *, int, u_char *, int,
- int, int, int, BIGNUM *, BIGNUM *, BIGNUM *, BIGNUM *, BIGNUM *);
+ BIGNUM *, BIGNUM *, BIGNUM *, u_char **, u_int *);
+void
+kexgex_hash(const EVP_MD *, char *, char *, char *, int, char *,
+ int, u_char *, int, int, int, int, BIGNUM *, BIGNUM *, BIGNUM *,
+ BIGNUM *, BIGNUM *, u_char **, u_int *);
void
derive_ssh1_session_id(BIGNUM *, BIGNUM *, u_int8_t[8], u_int8_t[16]);