NOTE: This update changes the RSA key generation.  *NEW RSA KEYS
      NEED TO BE GENERATED*  =)  Refer to to entry "2001/01/16 19:20:06"
      for more details.

20010118
 - (bal) Super Sized OpenBSD Resync
   - markus@cvs.openbsd.org 2001/01/11 22:14:20 GMT 2001 by markus
     [sshd.c]
     maxfd+1
   - markus@cvs.openbsd.org 2001/01/13 17:59:18
     [ssh-keygen.1]
     small ssh-keygen manpage cleanup; stevesk@pobox.com
   - markus@cvs.openbsd.org 2001/01/13 18:03:07
     [scp.c ssh-keygen.c sshd.c]
     getopt() returns -1 not EOF; stevesk@pobox.com
   - markus@cvs.openbsd.org 2001/01/13 18:06:54
     [ssh-keyscan.c]
     use SSH_DEFAULT_PORT; from stevesk@pobox.com
   - markus@cvs.openbsd.org 2001/01/13 18:12:47
     [ssh-keyscan.c]
     free() -> xfree(); fix memory leak; from stevesk@pobox.com
   - markus@cvs.openbsd.org 2001/01/13 18:14:13
     [ssh-add.c]
     typo, from stevesk@sweden.hp.com
   - markus@cvs.openbsd.org 2001/01/13 18:32:50
     [packet.c session.c ssh.c sshconnect.c sshd.c]
     split out keepalive from packet_interactive (from dale@accentre.com)
     set IPTOS_LOWDELAY TCP_NODELAY IPTOS_THROUGHPUT for ssh2, too.
   - markus@cvs.openbsd.org 2001/01/13 18:36:45
     [packet.c packet.h]
     reorder, typo
   - markus@cvs.openbsd.org 2001/01/13 18:38:00
     [auth-options.c]
     fix comment
   - markus@cvs.openbsd.org 2001/01/13 18:43:31
     [session.c]
     Wall
   - markus@cvs.openbsd.org 2001/01/13 19:14:08
     [clientloop.h clientloop.c ssh.c]
     move callback to headerfile
   - markus@cvs.openbsd.org 2001/01/15 21:40:10
     [ssh.c]
     use log() instead of stderr
   - markus@cvs.openbsd.org 2001/01/15 21:43:51
     [dh.c]
     use error() not stderr!
   - markus@cvs.openbsd.org 2001/01/15 21:45:29
     [sftp-server.c]
     rename must fail if newpath exists, debug off by default
   - markus@cvs.openbsd.org 2001/01/15 21:46:38
     [sftp-server.c]
     readable long listing for sftp-server, ok deraadt@
   - markus@cvs.openbsd.org 2001/01/16 19:20:06
     [key.c ssh-rsa.c]
     make "ssh-rsa" key format for ssh2 confirm to the ietf-drafts; from
     galb@vandyke.com.  note that you have to delete older ssh2-rsa keys,
     since they are in the wrong format, too. they must be removed from
     .ssh/authorized_keys2 and .ssh/known_hosts2, etc.
     (cd; grep -v ssh-rsa .ssh/authorized_keys2 > TMP && mv TMP
     .ssh/authorized_keys2) additionally, we now check that
     BN_num_bits(rsa->n) >= 768.
   - markus@cvs.openbsd.org 2001/01/16 20:54:27
     [sftp-server.c]
     remove some statics. simpler handles; idea from nisse@lysator.liu.se
   - deraadt@cvs.openbsd.org 2001/01/16 23:58:08
     [bufaux.c radix.c sshconnect.h sshconnect1.c]
     indent
 - (bal) Added bsd-strmode.[ch] since some non-OpenBSD platforms may
   be missing such feature.
diff --git a/ssh-rsa.c b/ssh-rsa.c
index aab9168..e53af9e 100644
--- a/ssh-rsa.c
+++ b/ssh-rsa.c
@@ -23,7 +23,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: ssh-rsa.c,v 1.3 2001/01/06 11:23:27 markus Exp $");
+RCSID("$OpenBSD: ssh-rsa.c,v 1.4 2001/01/16 19:20:06 markus Exp $");
 
 #include "ssh.h"
 #include "xmalloc.h"
@@ -122,6 +122,11 @@
 		error("ssh_rsa_verify: no RSA key");
 		return -1;
 	}
+	if (BN_num_bits(key->rsa->n) < 768) {
+		error("ssh_rsa_verify: n too small: %d bits",
+		    BN_num_bits(key->rsa->n));
+		return -1;
+	}
 	buffer_init(&b);
 	buffer_append(&b, (char *) signature, signaturelen);
 	ktype = buffer_get_string(&b, NULL);