if ((enc->cipher = cipher_by_name(name)) == NULL)
fatal("matching cipher is not supported: %s", name);
enc->name = name;
if ((enc->cipher = cipher_by_name(name)) == NULL)
fatal("matching cipher is not supported: %s", name);
enc->name = name;
static void
choose_mac(Mac *mac, char *client, char *server)
{
char *name = match_list(client, server, NULL);
if (name == NULL)
static void
choose_mac(Mac *mac, char *client, char *server)
{
char *name = match_list(client, server, NULL);
if (name == NULL)
- fatal("no matching mac found: client %s server %s", client, server);
- if (mac_init(mac, name) < 0)
+ fatal("no matching mac found: client %s server %s",
+ client, server);
+ if (mac_setup(mac, name) < 0)
fatal("unsupported mac %s", name);
/* truncate the key */
if (datafellows & SSH_BUG_HMAC)
fatal("unsupported mac %s", name);
/* truncate the key */
if (datafellows & SSH_BUG_HMAC)
static void
choose_kex(Kex *k, char *client, char *server)
{
k->name = match_list(client, server, NULL);
if (k->name == NULL)
static void
choose_kex(Kex *k, char *client, char *server)
{
k->name = match_list(client, server, NULL);
if (k->name == NULL)
if (strcmp(k->name, KEX_DH1) == 0) {
k->kex_type = KEX_DH_GRP1_SHA1;
if (strcmp(k->name, KEX_DH1) == 0) {
k->kex_type = KEX_DH_GRP1_SHA1;
} else if (strcmp(k->name, KEX_DH14) == 0) {
k->kex_type = KEX_DH_GRP14_SHA1;
} else if (strcmp(k->name, KEX_DH14) == 0) {
k->kex_type = KEX_DH_GRP14_SHA1;
+ k->evp_md = EVP_sha1();
+#if OPENSSL_VERSION_NUMBER >= 0x00907000L
+ } else if (strcmp(k->name, KEX_DHGEX_SHA256) == 0) {
+ k->kex_type = KEX_DH_GEX_SHA256;
+ k->evp_md = evp_ssh_sha256();
+#endif
- newkeys = xmalloc(sizeof(*newkeys));
- memset(newkeys, 0, sizeof(*newkeys));
+ newkeys = xcalloc(1, sizeof(*newkeys));
nenc = ctos ? PROPOSAL_ENC_ALGS_CTOS : PROPOSAL_ENC_ALGS_STOC;
nmac = ctos ? PROPOSAL_MAC_ALGS_CTOS : PROPOSAL_MAC_ALGS_STOC;
ncomp = ctos ? PROPOSAL_COMP_ALGS_CTOS : PROPOSAL_COMP_ALGS_STOC;
nenc = ctos ? PROPOSAL_ENC_ALGS_CTOS : PROPOSAL_ENC_ALGS_STOC;
nmac = ctos ? PROPOSAL_MAC_ALGS_CTOS : PROPOSAL_MAC_ALGS_STOC;
ncomp = ctos ? PROPOSAL_COMP_ALGS_CTOS : PROPOSAL_COMP_ALGS_STOC;
-derive_key(Kex *kex, int id, u_int need, u_char *hash, BIGNUM *shared_secret)
+derive_key(Kex *kex, int id, u_int need, u_char *hash, u_int hashlen,
+ BIGNUM *shared_secret)
digest = xmalloc(roundup(need, mdsz));
buffer_init(&b);
buffer_put_bignum2(&b, shared_secret);
/* K1 = HASH(K || H || "A" || session_id) */
digest = xmalloc(roundup(need, mdsz));
buffer_init(&b);
buffer_put_bignum2(&b, shared_secret);
/* K1 = HASH(K || H || "A" || session_id) */
if (!(datafellows & SSH_BUG_DERIVEKEY))
EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
if (!(datafellows & SSH_BUG_DERIVEKEY))
EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
EVP_DigestUpdate(&md, &c, 1);
EVP_DigestUpdate(&md, kex->session_id, kex->session_id_len);
EVP_DigestFinal(&md, digest, NULL);
EVP_DigestUpdate(&md, &c, 1);
EVP_DigestUpdate(&md, kex->session_id, kex->session_id_len);
EVP_DigestFinal(&md, digest, NULL);
if (!(datafellows & SSH_BUG_DERIVEKEY))
EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
if (!(datafellows & SSH_BUG_DERIVEKEY))
EVP_DigestUpdate(&md, buffer_ptr(&b), buffer_len(&b));
EVP_DigestUpdate(&md, digest, have);
EVP_DigestFinal(&md, digest + have, NULL);
}
EVP_DigestUpdate(&md, digest, have);
EVP_DigestFinal(&md, digest + have, NULL);
}
-kex_derive_keys(Kex *kex, u_char *hash, BIGNUM *shared_secret)
+kex_derive_keys(Kex *kex, u_char *hash, u_int hashlen, BIGNUM *shared_secret)
- for (i = 0; i < NKEYS; i++)
- keys[i] = derive_key(kex, 'A'+i, kex->we_need, hash, shared_secret);
+ for (i = 0; i < NKEYS; i++) {
+ keys[i] = derive_key(kex, 'A'+i, kex->we_need, hash, hashlen,
+ shared_secret);
+ }
debug2("kex_derive_keys");
for (mode = 0; mode < MODE_MAX; mode++) {
current_keys[mode] = kex->newkeys[mode];
kex->newkeys[mode] = NULL;
debug2("kex_derive_keys");
for (mode = 0; mode < MODE_MAX; mode++) {
current_keys[mode] = kex->newkeys[mode];
kex->newkeys[mode] = NULL;
current_keys[mode]->enc.iv = keys[ctos ? 0 : 1];
current_keys[mode]->enc.key = keys[ctos ? 2 : 3];
current_keys[mode]->mac.key = keys[ctos ? 4 : 5];
current_keys[mode]->enc.iv = keys[ctos ? 0 : 1];
current_keys[mode]->enc.key = keys[ctos ? 2 : 3];
current_keys[mode]->mac.key = keys[ctos ? 4 : 5];