Create blackbox fuzzer for wycheproof. (#8926)

Related: https://github.com/google/oss-fuzz/issues/8034

infra/tools/wycheproof/launcher.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+"""Script for running wycheproof."""
+
+import logging
+import sys
+import subprocess
+
+
+def main():
+  if len(sys.argv) < 3:
+    logging.error('Usage: %s <test_app> <testcase>.', sys.argv[0])
+    return 1
+
+  test_app = sys.argv[1]
+  return subprocess.run([test_app], check=False).return_code
+
+
+if __name__ == '__main__':
+  sys.exit(main())

infra/tools/wycheproof/run.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+################################################################################
+"""Script for creating "testcases" to run wycheproof on."""
+
+import argparse
+import os
+import sys
+
+
+def get_args():
+  parser = argparse.ArgumentParser()
+  parser.add_argument(
+      '--input_dir',
+      help='Ignored.',
+  )
+  parser.add_argument('--output_dir',
+                      help='Directory for writing testcases.',
+                      required=True)
+  parser.add_argument('--no_of_files', type=int, help='Ignored.')
+  return parser.parse_args()
+
+
+def main():
+  args = get_args()
+  if not os.path.exists(args.output_dir):
+    os.mkdir(args.output_dir)
+  testcase = os.path.join(args.output_dir, 'testcase')
+  with open(testcase, 'w') as file_handle:
+    file_handle.write(' ')
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())