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-rw-r--r--kexc25519s.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/kexc25519s.c b/kexc25519s.c
deleted file mode 100644
index ace4d5c7..00000000
--- a/kexc25519s.c
+++ /dev/null
@@ -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;
-}