upstream: use KEM API for vanilla c25519 KEX

OpenBSD-Commit-ID: 38d937b85ff770886379dd66a8f32ab0c1c35c1f
This commit is contained in:
djm@openbsd.org 2019-01-21 10:24:09 +00:00 committed by Damien Miller
parent dfd591618c
commit 2f6a9ddbbf
12 changed files with 170 additions and 312 deletions

View File

@ -98,8 +98,6 @@ LIBSSH_OBJS=${LIBOPENSSH_OBJS} \
ssh-ed25519.o digest-openssl.o digest-libc.o hmac.o \
sc25519.o ge25519.o fe25519.o ed25519.o verify.o hash.o \
kex.o kexdh.o kexgex.o kexecdh.o kexc25519.o \
kexdhc.o kexgexc.o kexecdhc.o kexc25519c.o \
kexdhs.o kexgexs.o kexecdhs.o kexc25519s.o \
sntrup4591761.o kexsntrup4591761x25519.o kexkemc.o kexkems.o \
platform-pledge.o platform-tracing.o platform-misc.o

7
kex.h
View File

@ -1,4 +1,4 @@
/* $OpenBSD: kex.h,v 1.99 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: kex.h,v 1.100 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
@ -211,6 +211,11 @@ int kexc25519_server(struct ssh *);
int kex_kem_client(struct ssh *);
int kex_kem_server(struct ssh *);
int kex_c25519_keypair(struct kex *);
int kex_c25519_enc(struct kex *, const u_char *, size_t, struct sshbuf **,
struct sshbuf **);
int kex_c25519_dec(struct kex *, const u_char *, size_t, struct sshbuf **);
int kex_kem_sntrup4591761x25519_keypair(struct kex *);
int kex_kem_sntrup4591761x25519_enc(struct kex *, const u_char *, size_t,
struct sshbuf **, struct sshbuf **);

View File

@ -1,6 +1,6 @@
/* $OpenBSD: kexc25519.c,v 1.13 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: kexc25519.c,v 1.14 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2001, 2013 Markus Friedl. All rights reserved.
* Copyright (c) 2019 Markus Friedl. All rights reserved.
* Copyright (c) 2010 Damien Miller. All rights reserved.
* Copyright (c) 2013 Aris Adamantiadis. All rights reserved.
*
@ -29,20 +29,16 @@
#include <sys/types.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <openssl/bn.h>
#include <openssl/evp.h>
#include "sshbuf.h"
#include "ssh2.h"
#include "sshkey.h"
#include "cipher.h"
#include "kex.h"
#include "log.h"
#include "sshbuf.h"
#include "digest.h"
#include "ssherr.h"
#include "ssh2.h"
extern int crypto_scalarmult_curve25519(u_char a[CURVE25519_SIZE],
const u_char b[CURVE25519_SIZE], const u_char c[CURVE25519_SIZE])
@ -142,3 +138,109 @@ kex_c25519_hash(
#endif
return 0;
}
int
kex_c25519_keypair(struct kex *kex)
{
struct sshbuf *buf = NULL;
u_char *cp = NULL;
int r;
if ((buf = sshbuf_new()) == NULL)
return SSH_ERR_ALLOC_FAIL;
if ((r = sshbuf_reserve(buf, CURVE25519_SIZE, &cp)) != 0)
goto out;
kexc25519_keygen(kex->c25519_client_key, cp);
#ifdef DEBUG_KEXECDH
dump_digest("client public key c25519:", cp, CURVE25519_SIZE);
#endif
kex->kem_client_pub = buf;
buf = NULL;
out:
sshbuf_free(buf);
return r;
}
int
kex_c25519_enc(struct kex *kex, const u_char *pkblob,
size_t pklen, struct sshbuf **server_blobp, struct sshbuf **shared_secretp)
{
struct sshbuf *server_blob = NULL;
struct sshbuf *buf = NULL;
u_char *server_pub;
u_char server_key[CURVE25519_SIZE];
int r;
*server_blobp = NULL;
*shared_secretp = NULL;
if (pklen != CURVE25519_SIZE) {
r = SSH_ERR_SIGNATURE_INVALID;
goto out;
}
#ifdef DEBUG_KEXECDH
dump_digest("client public key 25519:", pkblob, CURVE25519_SIZE);
#endif
/* allocate space for encrypted KEM key and ECDH pub key */
if ((server_blob = sshbuf_new()) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
if ((r = sshbuf_reserve(server_blob, CURVE25519_SIZE, &server_pub)) != 0)
goto out;
kexc25519_keygen(server_key, server_pub);
/* allocate shared secret */
if ((buf = sshbuf_new()) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
if ((r = kexc25519_shared_key_ext(server_key, pkblob, buf, 0)) < 0)
goto out;
#ifdef DEBUG_KEXECDH
dump_digest("server public key 25519:", server_pub, CURVE25519_SIZE);
dump_digest("encoded shared secret:", sshbuf_ptr(buf), sshbuf_len(buf));
#endif
*server_blobp = server_blob;
*shared_secretp = buf;
server_blob = NULL;
buf = NULL;
out:
explicit_bzero(server_key, sizeof(server_key));
sshbuf_free(server_blob);
sshbuf_free(buf);
return r;
}
int
kex_c25519_dec(struct kex *kex, const u_char *pkblob,
size_t pklen, struct sshbuf **shared_secretp)
{
struct sshbuf *buf = NULL;
int r;
*shared_secretp = NULL;
if (pklen != CURVE25519_SIZE) {
r = SSH_ERR_SIGNATURE_INVALID;
goto out;
}
#ifdef DEBUG_KEXECDH
dump_digest("server public key c25519:", pkblob, CURVE25519_SIZE);
#endif
/* shared secret */
if ((buf = sshbuf_new()) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
if ((r = kexc25519_shared_key_ext(kex->c25519_client_key, pkblob,
buf, 0)) < 0)
goto out;
#ifdef DEBUG_KEXECDH
dump_digest("encoded shared secret:", sshbuf_ptr(buf), sshbuf_len(buf));
#endif
*shared_secretp = buf;
buf = NULL;
out:
sshbuf_free(buf);
return r;
}

View File

@ -1,145 +0,0 @@
/* $OpenBSD: kexc25519c.c,v 1.13 2019/01/21 10:20:12 djm Exp $ */
/*
* Copyright (c) 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2010 Damien Miller. All rights reserved.
* Copyright (c) 2013 Aris Adamantiadis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include "sshkey.h"
#include "cipher.h"
#include "kex.h"
#include "log.h"
#include "packet.h"
#include "ssh2.h"
#include "sshbuf.h"
#include "digest.h"
#include "ssherr.h"
static int
input_kex_c25519_reply(int type, u_int32_t seq, struct ssh *ssh);
int
kexc25519_client(struct ssh *ssh)
{
struct kex *kex = ssh->kex;
int r;
kexc25519_keygen(kex->c25519_client_key, kex->c25519_client_pubkey);
#ifdef DEBUG_KEXECDH
dump_digest("client private key:", kex->c25519_client_key,
sizeof(kex->c25519_client_key));
#endif
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_ECDH_INIT)) != 0 ||
(r = sshpkt_put_string(ssh, kex->c25519_client_pubkey,
sizeof(kex->c25519_client_pubkey))) != 0 ||
(r = sshpkt_send(ssh)) != 0)
return r;
debug("expecting SSH2_MSG_KEX_ECDH_REPLY");
ssh_dispatch_set(ssh, SSH2_MSG_KEX_ECDH_REPLY, &input_kex_c25519_reply);
return 0;
}
static int
input_kex_c25519_reply(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
struct sshkey *server_host_key = NULL;
struct sshbuf *shared_secret = NULL;
u_char *server_pubkey = NULL;
u_char *server_host_key_blob = NULL, *signature = NULL;
u_char hash[SSH_DIGEST_MAX_LENGTH];
size_t slen, pklen, sbloblen, hashlen;
int r;
/* hostkey */
if ((r = sshpkt_get_string(ssh, &server_host_key_blob,
&sbloblen)) != 0 ||
(r = sshkey_from_blob(server_host_key_blob, sbloblen,
&server_host_key)) != 0)
goto out;
if ((r = kex_verify_host_key(ssh, server_host_key)) != 0)
goto out;
/* Q_S, server public key */
/* signed H */
if ((r = sshpkt_get_string(ssh, &server_pubkey, &pklen)) != 0 ||
(r = sshpkt_get_string(ssh, &signature, &slen)) != 0 ||
(r = sshpkt_get_end(ssh)) != 0)
goto out;
if (pklen != CURVE25519_SIZE) {
r = SSH_ERR_SIGNATURE_INVALID;
goto out;
}
#ifdef DEBUG_KEXECDH
dump_digest("server public key:", server_pubkey, CURVE25519_SIZE);
#endif
if ((shared_secret = sshbuf_new()) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
if ((r = kexc25519_shared_key(kex->c25519_client_key, server_pubkey,
shared_secret)) != 0)
goto out;
/* calc and verify H */
hashlen = sizeof(hash);
if ((r = kex_c25519_hash(
kex->hash_alg,
kex->client_version,
kex->server_version,
sshbuf_ptr(kex->my), sshbuf_len(kex->my),
sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
server_host_key_blob, sbloblen,
kex->c25519_client_pubkey, sizeof(kex->c25519_client_pubkey),
server_pubkey, pklen,
sshbuf_ptr(shared_secret), sshbuf_len(shared_secret),
hash, &hashlen)) != 0)
goto out;
if ((r = sshkey_verify(server_host_key, signature, slen, hash, hashlen,
kex->hostkey_alg, ssh->compat)) != 0)
goto out;
if ((r = kex_derive_keys(ssh, hash, hashlen, shared_secret)) == 0)
r = kex_send_newkeys(ssh);
out:
explicit_bzero(hash, sizeof(hash));
explicit_bzero(kex->c25519_client_key, sizeof(kex->c25519_client_key));
free(server_host_key_blob);
free(server_pubkey);
free(signature);
sshkey_free(server_host_key);
sshbuf_free(shared_secret);
return r;
}

View File

@ -1,136 +0,0 @@
/* $OpenBSD: kexc25519s.c,v 1.16 2019/01/21 10:20:12 djm Exp $ */
/*
* Copyright (c) 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2010 Damien Miller. All rights reserved.
* Copyright (c) 2013 Aris Adamantiadis. All rights reserved.
*
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "includes.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include "sshkey.h"
#include "cipher.h"
#include "digest.h"
#include "kex.h"
#include "log.h"
#include "packet.h"
#include "ssh2.h"
#include "sshbuf.h"
#include "ssherr.h"
static int input_kex_c25519_init(int, u_int32_t, struct ssh *);
int
kexc25519_server(struct ssh *ssh)
{
debug("expecting SSH2_MSG_KEX_ECDH_INIT");
ssh_dispatch_set(ssh, SSH2_MSG_KEX_ECDH_INIT, &input_kex_c25519_init);
return 0;
}
static int
input_kex_c25519_init(int type, u_int32_t seq, struct ssh *ssh)
{
struct kex *kex = ssh->kex;
struct sshkey *server_host_private, *server_host_public;
struct sshbuf *shared_secret = NULL;
u_char *server_host_key_blob = NULL, *signature = NULL;
u_char server_key[CURVE25519_SIZE];
u_char *client_pubkey = NULL;
u_char server_pubkey[CURVE25519_SIZE];
u_char hash[SSH_DIGEST_MAX_LENGTH];
size_t slen, pklen, sbloblen, hashlen;
int r;
/* generate private key */
kexc25519_keygen(server_key, server_pubkey);
#ifdef DEBUG_KEXECDH
dump_digest("server private key:", server_key, sizeof(server_key));
#endif
if ((r = kex_load_hostkey(ssh, &server_host_private,
&server_host_public)) != 0)
goto out;
if ((r = sshpkt_get_string(ssh, &client_pubkey, &pklen)) != 0 ||
(r = sshpkt_get_end(ssh)) != 0)
goto out;
if (pklen != CURVE25519_SIZE) {
r = SSH_ERR_SIGNATURE_INVALID;
goto out;
}
#ifdef DEBUG_KEXECDH
dump_digest("client public key:", client_pubkey, CURVE25519_SIZE);
#endif
if ((shared_secret = sshbuf_new()) == NULL) {
r = SSH_ERR_ALLOC_FAIL;
goto out;
}
if ((r = kexc25519_shared_key(server_key, client_pubkey,
shared_secret)) < 0)
goto out;
/* calc H */
if ((r = sshkey_to_blob(server_host_public, &server_host_key_blob,
&sbloblen)) != 0)
goto out;
hashlen = sizeof(hash);
if ((r = kex_c25519_hash(
kex->hash_alg,
kex->client_version,
kex->server_version,
sshbuf_ptr(kex->peer), sshbuf_len(kex->peer),
sshbuf_ptr(kex->my), sshbuf_len(kex->my),
server_host_key_blob, sbloblen,
client_pubkey, pklen,
server_pubkey, sizeof(server_pubkey),
sshbuf_ptr(shared_secret), sshbuf_len(shared_secret),
hash, &hashlen)) != 0)
goto out;
/* sign H */
if ((r = kex->sign(ssh, server_host_private, server_host_public,
&signature, &slen, hash, hashlen, kex->hostkey_alg)) < 0)
goto out;
/* send server hostkey, ECDH pubkey 'Q_S' and signed H */
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_ECDH_REPLY)) != 0 ||
(r = sshpkt_put_string(ssh, server_host_key_blob, sbloblen)) != 0 ||
(r = sshpkt_put_string(ssh, server_pubkey, sizeof(server_pubkey))) != 0 ||
(r = sshpkt_put_string(ssh, signature, slen)) != 0 ||
(r = sshpkt_send(ssh)) != 0)
goto out;
if ((r = kex_derive_keys(ssh, hash, hashlen, shared_secret)) == 0)
r = kex_send_newkeys(ssh);
out:
explicit_bzero(hash, sizeof(hash));
explicit_bzero(server_key, sizeof(server_key));
free(server_host_key_blob);
free(signature);
free(client_pubkey);
sshbuf_free(shared_secret);
return r;
}

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@ -1,4 +1,4 @@
/* $OpenBSD: kexkemc.c,v 1.1 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: kexkemc.c,v 1.2 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2019 Markus Friedl. All rights reserved.
*
@ -47,7 +47,18 @@ kex_kem_client(struct ssh *ssh)
struct kex *kex = ssh->kex;
int r;
if ((r = kex_kem_sntrup4591761x25519_keypair(kex)) != 0)
switch (kex->kex_type) {
case KEX_C25519_SHA256:
r = kex_c25519_keypair(kex);
break;
case KEX_KEM_SNTRUP4591761X25519_SHA512:
r = kex_kem_sntrup4591761x25519_keypair(kex);
break;
default:
r = SSH_ERR_INVALID_ARGUMENT;
break;
}
if (r != 0)
return r;
if ((r = sshpkt_start(ssh, SSH2_MSG_KEX_ECDH_INIT)) != 0 ||
(r = sshpkt_put_stringb(ssh, kex->kem_client_pub)) != 0 ||
@ -87,8 +98,19 @@ input_kex_kem_reply(int type, u_int32_t seq, struct ssh *ssh)
goto out;
/* compute shared secret */
if ((r = kex_kem_sntrup4591761x25519_dec(kex, server_pubkey, pklen,
&shared_secret)) != 0)
switch (kex->kex_type) {
case KEX_C25519_SHA256:
r = kex_c25519_dec(kex, server_pubkey, pklen, &shared_secret);
break;
case KEX_KEM_SNTRUP4591761X25519_SHA512:
r = kex_kem_sntrup4591761x25519_dec(kex, server_pubkey, pklen,
&shared_secret);
break;
default:
r = SSH_ERR_INVALID_ARGUMENT;
break;
}
if (r !=0 )
goto out;
/* calc and verify H */

View File

@ -1,4 +1,4 @@
/* $OpenBSD: kexkems.c,v 1.1 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: kexkems.c,v 1.2 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2019 Markus Friedl. All rights reserved.
*
@ -68,8 +68,20 @@ input_kex_kem_init(int type, u_int32_t seq, struct ssh *ssh)
goto out;
/* compute shared secret */
if ((r = kex_kem_sntrup4591761x25519_enc(kex, client_pubkey, pklen,
&server_pubkey, &shared_secret)) != 0)
switch (kex->kex_type) {
case KEX_C25519_SHA256:
r = kex_c25519_enc(kex, client_pubkey, pklen, &server_pubkey,
&shared_secret);
break;
case KEX_KEM_SNTRUP4591761X25519_SHA512:
r = kex_kem_sntrup4591761x25519_enc(kex, client_pubkey, pklen,
&server_pubkey, &shared_secret);
break;
default:
r = SSH_ERR_INVALID_ARGUMENT;
break;
}
if (r !=0 )
goto out;
/* calc H */

View File

@ -1,4 +1,4 @@
/* $OpenBSD: monitor.c,v 1.193 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: monitor.c,v 1.194 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright 2002 Niels Provos <provos@citi.umich.edu>
* Copyright 2002 Markus Friedl <markus@openbsd.org>
@ -1688,7 +1688,7 @@ monitor_apply_keystate(struct ssh *ssh, struct monitor *pmonitor)
kex->kex[KEX_ECDH_SHA2] = kexecdh_server;
# endif
#endif /* WITH_OPENSSL */
kex->kex[KEX_C25519_SHA256] = kexc25519_server;
kex->kex[KEX_C25519_SHA256] = kex_kem_server;
kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_server;
kex->load_host_public_key=&get_hostkey_public_by_type;
kex->load_host_private_key=&get_hostkey_private_by_type;

View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh-keyscan.c,v 1.121 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: ssh-keyscan.c,v 1.122 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright 1995, 1996 by David Mazieres <dm@lcs.mit.edu>.
*
@ -271,7 +271,7 @@ keygrab_ssh2(con *c)
c->c_ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_client;
# endif
#endif
c->c_ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_client;
c->c_ssh->kex->kex[KEX_C25519_SHA256] = kex_kem_client;
c->c_ssh->kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_client;
ssh_set_verify_host_key_callback(c->c_ssh, key_print_wrapper);
/*

View File

@ -1,4 +1,4 @@
/* $OpenBSD: ssh_api.c,v 1.11 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: ssh_api.c,v 1.12 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2012 Markus Friedl. All rights reserved.
*
@ -110,7 +110,7 @@ ssh_init(struct ssh **sshp, int is_server, struct kex_params *kex_params)
ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_server;
# endif
#endif /* WITH_OPENSSL */
ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_server;
ssh->kex->kex[KEX_C25519_SHA256] = kex_kem_server;
ssh->kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_server;
ssh->kex->load_host_public_key=&_ssh_host_public_key;
ssh->kex->load_host_private_key=&_ssh_host_private_key;
@ -128,7 +128,7 @@ ssh_init(struct ssh **sshp, int is_server, struct kex_params *kex_params)
ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_client;
# endif
#endif /* WITH_OPENSSL */
ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_client;
ssh->kex->kex[KEX_C25519_SHA256] = kex_kem_client;
ssh->kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_client;
ssh->kex->verify_host_key =&_ssh_verify_host_key;
}

View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshconnect2.c,v 1.297 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: sshconnect2.c,v 1.298 2019/01/21 10:24:09 djm Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
* Copyright (c) 2008 Damien Miller. All rights reserved.
@ -212,7 +212,7 @@ ssh_kex2(struct ssh *ssh, char *host, struct sockaddr *hostaddr, u_short port)
ssh->kex->kex[KEX_ECDH_SHA2] = kexecdh_client;
# endif
#endif
ssh->kex->kex[KEX_C25519_SHA256] = kexc25519_client;
ssh->kex->kex[KEX_C25519_SHA256] = kex_kem_client;
ssh->kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_client;
ssh->kex->verify_host_key=&verify_host_key_callback;

4
sshd.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: sshd.c,v 1.528 2019/01/21 10:20:12 djm Exp $ */
/* $OpenBSD: sshd.c,v 1.529 2019/01/21 10:24:09 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -2218,7 +2218,7 @@ do_ssh2_kex(struct ssh *ssh)
kex->kex[KEX_ECDH_SHA2] = kexecdh_server;
# endif
#endif
kex->kex[KEX_C25519_SHA256] = kexc25519_server;
kex->kex[KEX_C25519_SHA256] = kex_kem_server;
kex->kex[KEX_KEM_SNTRUP4591761X25519_SHA512] = kex_kem_server;
kex->load_host_public_key=&get_hostkey_public_by_type;
kex->load_host_private_key=&get_hostkey_private_by_type;