Make dumpRSAPublicKey also accept a public key in PEM format

utility/dev_make_keypair

 #!/bin/bash -e
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 
 # Check args first.
 if [ "$#" -lt "1" ]; then
   cat <<EOF 1>&2
 
@@ skipping 35 matching lines @@
   local base=$1
   local alg=$2
   local len=$(alg_to_keylen $alg)
 
   # make the RSA keypair
   openssl genrsa -F4 -out "${base}_${len}.pem" $len
   # create a self-signed certificate
   openssl req -batch -new -x509 -key "${base}_${len}.pem" \
     -out "${base}_${len}.crt"
   # generate pre-processed RSA public key
-  dumpRSAPublicKey "${base}_${len}.crt" > "${base}_${len}.keyb"
+  dumpRSAPublicKey -cert "${base}_${len}.crt" > "${base}_${len}.keyb"
 
   # wrap the public key
   vbutil_key \
     --pack "${base}.vbpubk" \
     --key "${base}_${len}.keyb" \
     --version 1 \
     --algorithm $alg
 
   # wrap the private key
   vbutil_key \
     --pack "${base}.vbprivk" \
     --key "${base}_${len}.pem" \
     --algorithm $alg
 
   # remove intermediate files
   rm -f "${base}_${len}.pem" "${base}_${len}.crt" "${base}_${len}.keyb"
 }
 
 # First create the .vbpubk and .vbprivk pair.
 make_pair "$1" "${2:-4}"
 
 # Now create a .keyblock to hold our .vbpubk. Since it's for developer use, it
 # won't be signed, just checksummed. Developer kernels can only be run in
 # non-recovery mode with the developer switch enabled, but it won't hurt us to
 # turn on all the flags bits anyway.
 vbutil_keyblock --pack "$1.keyblock" --datapubkey "$1.vbpubk" --flags 15