- markus@cvs.openbsd.org 2001/06/26 20:14:11

[openssh.git] / sshconnect1.c

diff --git a/sshconnect1.c b/sshconnect1.c
index 09203d71496cf4428ffc6e04a5f6c122ee563048..166fdc17fe86afaaaa26bb3dafec907501182d56 100644 (file)
--- a/sshconnect1.c
+++ b/sshconnect1.c
@@ -13,7 +13,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: sshconnect1.c,v 1.37 2001/06/26 16:15:24 dugsong Exp $");
+RCSID("$OpenBSD: sshconnect1.c,v 1.38 2001/06/26 20:14:11 markus Exp $");
 
 #include <openssl/bn.h>
 #include <openssl/evp.h>
@@ -205,20 +205,17 @@ respond_to_rsa_challenge(BIGNUM * challenge, RSA * prv)
  * the user using it.
  */
 static int
-try_rsa_authentication(const char *authfile)
+try_rsa_authentication(int idx)
 {
        BIGNUM *challenge;
        Key *public, *private;
-       char buf[300], *passphrase, *comment;
+       char buf[300], *passphrase, *comment, *authfile;
        int i, type, quit, plen, clen;
 
-       /* Try to load identification for the authentication key. */
-       /* XXKEYLOAD */
-       public = key_load_public_type(KEY_RSA1, authfile, &comment);
-       if (public == NULL) {
-               /* Could not load it.  Fail. */
-               return 0;
-       }
+       public = options.identity_keys[idx];
+       authfile = options.identity_files[idx];
+       comment = xstrdup(authfile);
+
        debug("Trying RSA authentication with key '%.100s'", comment);
 
        /* Tell the server that we are willing to authenticate using this key. */
@@ -227,9 +224,6 @@ try_rsa_authentication(const char *authfile)
        packet_send();
        packet_write_wait();
 
-       /* We no longer need the public key. */
-       key_free(public);
-
        /* Wait for server's response. */
        type = packet_read(&plen);
 
@@ -255,10 +249,14 @@ try_rsa_authentication(const char *authfile)
        debug("Received RSA challenge from server.");
 
        /*
-        * Load the private key.  Try first with empty passphrase; if it
+        * If the key is not stored in external hardware, we have to
+        * load the private key.  Try first with empty passphrase; if it
         * fails, ask for a passphrase.
         */
-       private = key_load_private_type(KEY_RSA1, authfile, "", NULL);
+       if (public->flags && KEY_FLAG_EXT)
+               private = public;
+       else
+               private = key_load_private_type(KEY_RSA1, authfile, "", NULL);
        if (private == NULL && !options.batch_mode) {
                snprintf(buf, sizeof(buf),
                    "Enter passphrase for RSA key '%.100s': ", comment);
@@ -302,8 +300,9 @@ try_rsa_authentication(const char *authfile)
        /* Compute and send a response to the challenge. */
        respond_to_rsa_challenge(challenge, private->rsa);
 
-       /* Destroy the private key. */
-       key_free(private);
+       /* Destroy the private key unless it in external hardware. */
+       if (!(private->flags & KEY_FLAG_EXT))
+               key_free(private);
 
        /* We no longer need the challenge. */
        BN_clear_free(challenge);
@@ -1218,7 +1217,7 @@ ssh_userauth1(const char *local_user, const char *server_user, char *host,
                for (i = 0; i < options.num_identity_files; i++)
                        if (options.identity_keys[i] != NULL &&
                            options.identity_keys[i]->type == KEY_RSA1 &&
-                           try_rsa_authentication(options.identity_files[i]))
+                           try_rsa_authentication(i))
                                goto success;
        }
        /* Try challenge response authentication if the server supports it. */