1 files changed, 57 insertions, 0 deletions
diff --git a/testing/web-platform/tests/subresource-integrity/tools/list_hashes.py b/testing/web-platform/tests/subresource-integrity/tools/list_hashes.py
new file mode 100644
index 000000000..5e3830ab6
--- /dev/null
+++ b/testing/web-platform/tests/subresource-integrity/tools/list_hashes.py
@@ -0,0 +1,57 @@
+from os import path, listdir
+from hashlib import sha512, sha384, sha256, md5
+from base64 import b64encode
+import re
+
+DIR = path.normpath(path.join(__file__, "..", ".."))
+
+'''
+Yield each javascript and css file in the directory
+'''
+def js_and_css_files():
+  for f in listdir(DIR):
+    if path.isfile(f) and (f.endswith(".js") or f.endswith(".css")):
+      yield f
+
+'''
+URL-safe base64 encode a binary digest and strip any padding.
+'''
+def format_digest(digest):
+  return b64encode(digest)
+
+'''
+Generate an encoded sha512 URI.
+'''
+def sha512_uri(content):
+  return "sha512-%s" % format_digest(sha512(content).digest())
+
+'''
+Generate an encoded sha384 URI.
+'''
+def sha384_uri(content):
+  return "sha384-%s" % format_digest(sha384(content).digest())
+
+'''
+Generate an encoded sha256 URI.
+'''
+def sha256_uri(content):
+  return "sha256-%s" % format_digest(sha256(content).digest())
+
+'''
+Generate an encoded md5 digest URI.
+'''
+def md5_uri(content):
+  return "md5-%s" % format_digest(md5(content).digest())
+
+def main():
+  for file in js_and_css_files():
+    print "Listing hash values for %s" % file
+    with open(file, "r") as content_file:
+      content = content_file.read()
+      print "\tSHA512 integrity: %s" % sha512_uri(content)
+      print "\tSHA384 integrity: %s" % sha384_uri(content)
+      print "\tSHA256 integrity: %s" % sha256_uri(content)
+      print "\tMD5 integrity:    %s" % md5_uri(content)
+
+if __name__ == "__main__":
+  main()