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authordcashman <dcashman@google.com>2014-07-07 16:20:40 -0700
committerdcashman <dcashman@google.com>2014-07-07 16:20:40 -0700
commit6dd962236c57f327b92b0c8f09f649279980023c (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /ssh-dss.c
parent30b9ff3dd1a2663d017fea74adfbcd3da4aa2635 (diff)
Remove sshd.
This may require changes to other code, such as fastbootd, which relies on this service. sshd is not currently, used, however, so this change will force any such code to be changed. Bug: 11594902 Change-Id: I07e52008290dab5825be2ad062cbe730fa7dff71
Diffstat (limited to 'ssh-dss.c')
-rw-r--r--ssh-dss.c187
1 files changed, 0 insertions, 187 deletions
diff --git a/ssh-dss.c b/ssh-dss.c
deleted file mode 100644
index ede5e21e..00000000
--- a/ssh-dss.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/* $OpenBSD: ssh-dss.c,v 1.27 2010/08/31 09:58:37 djm Exp $ */
-/*
- * Copyright (c) 2000 Markus Friedl. 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 <openssl/bn.h>
-#include <openssl/evp.h>
-
-#include <stdarg.h>
-#include <string.h>
-
-#include "xmalloc.h"
-#include "buffer.h"
-#include "compat.h"
-#include "log.h"
-#include "key.h"
-
-#define INTBLOB_LEN 20
-#define SIGBLOB_LEN (2*INTBLOB_LEN)
-
-int
-ssh_dss_sign(const Key *key, u_char **sigp, u_int *lenp,
- const u_char *data, u_int datalen)
-{
- DSA_SIG *sig;
- const EVP_MD *evp_md = EVP_sha1();
- EVP_MD_CTX md;
- u_char digest[EVP_MAX_MD_SIZE], sigblob[SIGBLOB_LEN];
- u_int rlen, slen, len, dlen;
- Buffer b;
-
- if (key == NULL || key->dsa == NULL || (key->type != KEY_DSA &&
- key->type != KEY_DSA_CERT && key->type != KEY_DSA_CERT_V00)) {
- error("ssh_dss_sign: no DSA key");
- return -1;
- }
- EVP_DigestInit(&md, evp_md);
- EVP_DigestUpdate(&md, data, datalen);
- EVP_DigestFinal(&md, digest, &dlen);
-
- sig = DSA_do_sign(digest, dlen, key->dsa);
- memset(digest, 'd', sizeof(digest));
-
- if (sig == NULL) {
- error("ssh_dss_sign: sign failed");
- return -1;
- }
-
- rlen = BN_num_bytes(sig->r);
- slen = BN_num_bytes(sig->s);
- if (rlen > INTBLOB_LEN || slen > INTBLOB_LEN) {
- error("bad sig size %u %u", rlen, slen);
- DSA_SIG_free(sig);
- return -1;
- }
- memset(sigblob, 0, SIGBLOB_LEN);
- BN_bn2bin(sig->r, sigblob+ SIGBLOB_LEN - INTBLOB_LEN - rlen);
- BN_bn2bin(sig->s, sigblob+ SIGBLOB_LEN - slen);
- DSA_SIG_free(sig);
-
- if (datafellows & SSH_BUG_SIGBLOB) {
- if (lenp != NULL)
- *lenp = SIGBLOB_LEN;
- if (sigp != NULL) {
- *sigp = xmalloc(SIGBLOB_LEN);
- memcpy(*sigp, sigblob, SIGBLOB_LEN);
- }
- } else {
- /* ietf-drafts */
- buffer_init(&b);
- buffer_put_cstring(&b, "ssh-dss");
- buffer_put_string(&b, sigblob, SIGBLOB_LEN);
- len = buffer_len(&b);
- if (lenp != NULL)
- *lenp = len;
- if (sigp != NULL) {
- *sigp = xmalloc(len);
- memcpy(*sigp, buffer_ptr(&b), len);
- }
- buffer_free(&b);
- }
- return 0;
-}
-int
-ssh_dss_verify(const Key *key, const u_char *signature, u_int signaturelen,
- const u_char *data, u_int datalen)
-{
- DSA_SIG *sig;
- const EVP_MD *evp_md = EVP_sha1();
- EVP_MD_CTX md;
- u_char digest[EVP_MAX_MD_SIZE], *sigblob;
- u_int len, dlen;
- int rlen, ret;
- Buffer b;
-
- if (key == NULL || key->dsa == NULL || (key->type != KEY_DSA &&
- key->type != KEY_DSA_CERT && key->type != KEY_DSA_CERT_V00)) {
- error("ssh_dss_verify: no DSA key");
- return -1;
- }
-
- /* fetch signature */
- if (datafellows & SSH_BUG_SIGBLOB) {
- sigblob = xmalloc(signaturelen);
- memcpy(sigblob, signature, signaturelen);
- len = signaturelen;
- } else {
- /* ietf-drafts */
- char *ktype;
- buffer_init(&b);
- buffer_append(&b, signature, signaturelen);
- ktype = buffer_get_cstring(&b, NULL);
- if (strcmp("ssh-dss", ktype) != 0) {
- error("ssh_dss_verify: cannot handle type %s", ktype);
- buffer_free(&b);
- xfree(ktype);
- return -1;
- }
- xfree(ktype);
- sigblob = buffer_get_string(&b, &len);
- rlen = buffer_len(&b);
- buffer_free(&b);
- if (rlen != 0) {
- error("ssh_dss_verify: "
- "remaining bytes in signature %d", rlen);
- xfree(sigblob);
- return -1;
- }
- }
-
- if (len != SIGBLOB_LEN) {
- fatal("bad sigbloblen %u != SIGBLOB_LEN", len);
- }
-
- /* parse signature */
- if ((sig = DSA_SIG_new()) == NULL)
- fatal("ssh_dss_verify: DSA_SIG_new failed");
- if ((sig->r = BN_new()) == NULL)
- fatal("ssh_dss_verify: BN_new failed");
- if ((sig->s = BN_new()) == NULL)
- fatal("ssh_dss_verify: BN_new failed");
- if ((BN_bin2bn(sigblob, INTBLOB_LEN, sig->r) == NULL) ||
- (BN_bin2bn(sigblob+ INTBLOB_LEN, INTBLOB_LEN, sig->s) == NULL))
- fatal("ssh_dss_verify: BN_bin2bn failed");
-
- /* clean up */
- memset(sigblob, 0, len);
- xfree(sigblob);
-
- /* sha1 the data */
- EVP_DigestInit(&md, evp_md);
- EVP_DigestUpdate(&md, data, datalen);
- EVP_DigestFinal(&md, digest, &dlen);
-
- ret = DSA_do_verify(digest, dlen, sig, key->dsa);
- memset(digest, 'd', sizeof(digest));
-
- DSA_SIG_free(sig);
-
- debug("ssh_dss_verify: signature %s",
- ret == 1 ? "correct" : ret == 0 ? "incorrect" : "error");
- return ret;
-}