- OpenBSD CVS update
   - [auth-krb4.c]
     -Wall
   - [auth-rh-rsa.c auth-rsa.c hostfile.c hostfile.h key.c key.h match.c]
     [match.h ssh.c ssh.h sshconnect.c sshd.c]
     initial support for DSA keys. ok deraadt@, niels@
   - [cipher.c cipher.h]
     remove unused cipher_attack_detected code
   - [scp.1 ssh-add.1 ssh-agent.1 ssh-keygen.1 ssh.1 sshd.8]
     Fix some formatting problems I missed before.
   - [ssh.1 sshd.8]
     fix spelling errors, From: FreeBSD
   - [ssh.c]
     switch to raw mode only if he _get_ a pty (not if we _want_ a pty).
diff --git a/hostfile.h b/hostfile.h
new file mode 100644
index 0000000..64fe185
--- /dev/null
+++ b/hostfile.h
@@ -0,0 +1,22 @@
+#ifndef HOSTFILE_H
+#define HOSTFILE_H
+
+/*
+ * Checks whether the given host is already in the list of our known hosts.
+ * Returns HOST_OK if the host is known and has the specified key, HOST_NEW
+ * if the host is not known, and HOST_CHANGED if the host is known but used
+ * to have a different host key.  The host must be in all lowercase.
+ */
+typedef enum {
+	HOST_OK, HOST_NEW, HOST_CHANGED
+}       HostStatus;
+HostStatus 
+check_host_in_hostfile(const char *filename, const char *host, Key *key, Key *found);
+
+/*
+ * Appends an entry to the host file.  Returns false if the entry could not
+ * be appended.
+ */
+int	add_host_to_hostfile(const char *filename, const char *host, Key *key);
+
+#endif