One way to massive patch.  <sigh>  It compiles and works under Linux..
And I think I have all the bits right from the OpenBSD tree.
20001222
 - Updated RCSID for pty.c
 - (bal) OpenBSD CVS Updates:
  - markus@cvs.openbsd.org 2000/12/21 15:10:16
    [auth-rh-rsa.c hostfile.c hostfile.h sshconnect.c]
    print keyfile:line for changed hostkeys, for deraadt@, ok deraadt@
  - markus@cvs.openbsd.org 2000/12/20 19:26:56
    [authfile.c]
    allow ssh -i userkey for root
  - markus@cvs.openbsd.org 2000/12/20 19:37:21
    [authfd.c authfd.h kex.c sshconnect2.c sshd.c uidswap.c uidswap.h]
    fix prototypes; from stevesk@pobox.com
  - markus@cvs.openbsd.org 2000/12/20 19:32:08
    [sshd.c]
    init pointer to NULL; report from Jan.Ivan@cern.ch
  - markus@cvs.openbsd.org 2000/12/19 23:17:54
    [auth-krb4.c auth-options.c auth-options.h auth-rhosts.c auth-rsa.c
     auth1.c auth2-skey.c auth2.c authfd.c authfd.h authfile.c bufaux.c
     bufaux.h buffer.c canohost.c channels.c clientloop.c compress.c
     crc32.c deattack.c getput.h hmac.c hmac.h hostfile.c kex.c kex.h
     key.c key.h log.c login.c match.c match.h mpaux.c mpaux.h packet.c
     packet.h radix.c readconf.c rsa.c scp.c servconf.c servconf.h
     serverloop.c session.c sftp-server.c ssh-agent.c ssh-dss.c ssh-dss.h
     ssh-keygen.c ssh-keyscan.c ssh-rsa.c ssh-rsa.h ssh.c ssh.h  uuencode.c
     uuencode.h sshconnect1.c sshconnect2.c sshd.c tildexpand.c]
    replace 'unsigned bla' with 'u_bla' everywhere. also replace 'char
    unsigned' with u_char.
diff --git a/kex.h b/kex.h
index b445cee..143769a 100644
--- a/kex.h
+++ b/kex.h
@@ -62,15 +62,15 @@
 	char		*name;
 	Cipher		*cipher;
 	int		enabled;
-	unsigned char	*key;
-	unsigned char	*iv;
+	u_char	*key;
+	u_char	*iv;
 };
 struct Mac {
 	char		*name;
 	int		enabled;
 	EVP_MD		*md;
 	int		mac_len;
-	unsigned char	*key;
+	u_char	*key;
 	int		key_len;
 };
 struct Comp {
@@ -97,15 +97,15 @@
 Kex *
 kex_choose_conf(char *cprop[PROPOSAL_MAX],
     char *sprop[PROPOSAL_MAX], int server);
-int	kex_derive_keys(Kex *k, unsigned char *hash, BIGNUM *shared_secret);
+int	kex_derive_keys(Kex *k, u_char *hash, BIGNUM *shared_secret);
 void	packet_set_kex(Kex *k);
 int	dh_pub_is_valid(DH *dh, BIGNUM *dh_pub);
 DH	*dh_new_group_asc(const char *, const char *);
 DH	*dh_new_group(BIGNUM *, BIGNUM *);
-void	dh_gen_key();
-DH	*dh_new_group1();
+void	dh_gen_key(DH *);
+DH	*dh_new_group1(void);
 
-unsigned char *
+u_char *
 kex_hash(
     char *client_version_string,
     char *server_version_string,
@@ -116,7 +116,7 @@
     BIGNUM *server_dh_pub,
     BIGNUM *shared_secret);
 
-unsigned char *
+u_char *
 kex_hash_gex(
     char *client_version_string,
     char *server_version_string,