package libpam-ssh tags 334916 +patch thanks the attached patch seems to fix the problem (probably due to transition to openssl 0.9.8)
diff -urN libpam-ssh-1.91.0-orig/cipher.c libpam-ssh-1.91.0/cipher.c --- libpam-ssh-1.91.0-orig/cipher.c 2004-02-19 19:58:20.000000000 +0100 +++ libpam-ssh-1.91.0/cipher.c 2005-10-28 21:55:50.000000000 +0200 @@ -39,6 +39,7 @@ #include <string.h> #include <openssl/evp.h> +#include <openssl/md5.h> #include <config.h> #include "cipher.h"