libcamera: ipa: Move key generation to utils

Move the GPLv2 utilities used for generating public and private keys to
the utilities subtree.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>

src/libcamera/gen-ipa-pub-key.py

@@ -1,48 +0,0 @@
-#!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0-or-later
-# Copyright (C) 2020, Google Inc.
-#
-# Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
-#
-# ipa-gen-key.py - Generate the IPA module signing public key
-
-import string
-import subprocess
-import sys
-
-
-def main(argv):
-    if len(argv) != 4:
-        print('Usage: %s priv-key template output' % argv[0])
-        return 1
-
-    priv_key = argv[1]
-    template = argv[2]
-    output = argv[3]
-
-    try:
-        ret = subprocess.run(['openssl', 'rsa', '-pubout', '-in', priv_key,
-                              '-outform', 'DER'],
-                             stdout=subprocess.PIPE)
-    except FileNotFoundError:
-        print('Please install openssl to sign IPA modules')
-        return 1
-
-    ipa_key = ['0x%02x' % c for c in ret.stdout]
-    ipa_key = [', '.join(ipa_key[bound:bound + 8]) for bound in range(0, len(ipa_key), 8)]
-    ipa_key = ',\n\t'.join(ipa_key)
-    data = {'ipa_key': ipa_key}
-
-    template = open(template, 'rb').read()
-    template = template.decode('utf-8')
-    template = string.Template(template)
-
-    f = open(output, 'wb')
-    f.write(template.substitute(data).encode('utf-8'))
-    f.close()
-
-    return 0
-
-
-if __name__ == '__main__':
-    sys.exit(main(sys.argv))

src/libcamera/meson.build

@@ -100,7 +100,6 @@ version_cpp = vcs_tag(command : [gen_version, meson.build_root()],
 libcamera_sources += version_cpp
 
 if ipa_sign_module
-    gen_ipa_pub_key = files('gen-ipa-pub-key.py')
     ipa_pub_key_cpp = custom_target('ipa_pub_key_cpp',
                                     input : [ ipa_priv_key, 'ipa_pub_key.cpp.in' ],
                                     output : 'ipa_pub_key.cpp',