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Update nocrypto branch to current head

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--HG--
branch : insecure-nocrypto
extra : convert_revision : 9e5e6e33be005d27cd5b3270c574edc45b5c2893
This commit is contained in:
Matt Johnston 2008-11-06 13:33:06 +00:00
parent 800810a181
commit 1912439526
3 changed files with 25 additions and 32 deletions
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2
common-algo.c
View File

@ -151,7 +151,7 @@ algo_type sshciphers[] = {
{"blowfish-cbc", 0, &dropbear_blowfish, 1, &dropbear_mode_cbc},
#endif
#ifdef DROPBEAR_NONE_CIPHER
{"none", 0, (void*)&dropbear_nocipher, 1},
{"none", 0, (void*)&dropbear_nocipher, 1, &dropbear_mode_none},
#endif
{NULL, 0, NULL, 0}
};

20
common-kex.c
View File

@ -292,6 +292,7 @@ void gen_new_keys() {
hashkeys(C2S_key, C2S_keysize, &hs, 'C');
hashkeys(S2C_key, S2C_keysize, &hs, 'D');
if (ses.newkeys->recv_algo_crypt->cipherdesc != NULL) {
recv_cipher = find_cipher(ses.newkeys->recv_algo_crypt->cipherdesc->name);
if (recv_cipher < 0)
dropbear_exit("crypto error");
@ -301,7 +302,9 @@ void gen_new_keys() {
&ses.newkeys->recv_cipher_state) != CRYPT_OK) {
dropbear_exit("crypto error");
}
}
if (ses.newkeys->trans_algo_crypt->cipherdesc != NULL) {
trans_cipher = find_cipher(ses.newkeys->trans_algo_crypt->cipherdesc->name);
if (trans_cipher < 0)
dropbear_exit("crypto error");
@ -310,23 +313,6 @@ void gen_new_keys() {
ses.newkeys->trans_algo_crypt->keysize, 0,
&ses.newkeys->trans_cipher_state) != CRYPT_OK) {
dropbear_exit("crypto error");
if (ses.newkeys->recv_algo_crypt->cipherdesc != NULL) {
if (cbc_start(
find_cipher(ses.newkeys->recv_algo_crypt->cipherdesc->name),
recv_IV, recv_key,
ses.newkeys->recv_algo_crypt->keysize, 0,
&ses.newkeys->recv_symmetric_struct) != CRYPT_OK) {
dropbear_exit("crypto error");
}
}
if (ses.newkeys->trans_algo_crypt->cipherdesc != NULL) {
if (cbc_start(
find_cipher(ses.newkeys->trans_algo_crypt->cipherdesc->name),
trans_IV, trans_key,
ses.newkeys->trans_algo_crypt->keysize, 0,
&ses.newkeys->trans_symmetric_struct) != CRYPT_OK) {
dropbear_exit("crypto error");
}
}

19
options.h
View File

@ -82,17 +82,15 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */
* Protocol RFC requires 3DES and recommends AES128 for interoperability.
* Including multiple keysize variants the same cipher
* (eg AES256 as well as AES128) will result in a minimal size increase.*/
/*
#define DROPBEAR_AES128
#define DROPBEAR_3DES
#define DROPBEAR_AES256
#define DROPBEAR_BLOWFISH
#define DROPBEAR_TWOFISH256
#define DROPBEAR_TWOFISH128
*/
/* Enable "Counter Mode" for ciphers. This is more secure than normal
* CBC mode against certain attacks. This adds around 1kB to binary
* size and is recommended for most cases */
#define DROPBEAR_ENABLE_CTR_MODE
/* You can compile with no encryption if you want. In some circumstances
* this could be safe securitywise, though make sure you know what
* you're doing. Anyone can see everything that goes over the wire, so
@ -105,6 +103,11 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */
* "dbclient-insecure" client. */
#define DROPBEAR_NONE_CIPHER
/* Enable "Counter Mode" for ciphers. This is more secure than normal
* CBC mode against certain attacks. This adds around 1kB to binary
* size and is recommended for most cases */
#define DROPBEAR_ENABLE_CTR_MODE
/* Message Integrity - at least one required.
* Protocol RFC requires sha1 and recommends sha1-96.
* sha1-96 may be of use for slow links, as it has a smaller overhead.
@ -117,15 +120,19 @@ etc) slower (perhaps by 50%). Recommended for most small systems. */
* These hashes are also used for public key fingerprints in logs.
* If you disable MD5, Dropbear will fall back to SHA1 fingerprints,
* which are not the standard form. */
/*
#define DROPBEAR_SHA1_HMAC
#define DROPBEAR_SHA1_96_HMAC
#define DROPBEAR_MD5_HMAC
*/
/* You can also disable integrity. Don't bother disabling this if you're
* still using a cipher, it's relatively cheap. Don't disable this if you're
* using 'none' cipher, since it's dead simple to run arbitrary commands
* on the remote host. Beware. */
/*#define DROPBEAR_NONE_INTEGRITY*/
* on the remote host. Beware.
* Note again, for the client you will have to disable other hashes above
* to use this. */
#define DROPBEAR_NONE_INTEGRITY
/* Hostkey/public key algorithms - at least one required, these are used
* for hostkey as well as for verifying signatures with pubkey auth.