Did this work before? Yes - it was working with Chrome 58 and 57 versions, only from 59 we see this issue happening

Does this work in other browsers? Not applicable

We did the further Analysys on this issue , The Log shows PNG veryfication is failing. we are using the Same PNG long time , we did't touched this PNG 

I have below Question : 
1. what is the reason 3 means (in the below chrome Log)
2.Why this failing only in the chrome 59


Logs:  (chrome --enable-logging=stderr  --v=1)

[8704:7888:0606/051618.321:VERBOSE1:content_verify_job.cc(227)] job failed for cjabmdjcfcfdmffimndhafhblfmpjdpe toolbar/images/hide_default.PNG reason:3
[8704:7740:0606/051618.321:VERBOSE1:content_verifier.cc(143)] VerifyFailed cjabmdjcfcfdmffimndhafhblfmpjdpe reason:3

From the below source I can see reason HASH_MISMATCH=3, I am surprise see only on the chrome 59. 


https://chromium.googlesource.com/chromium/chromium/+/refs/heads/trunk/extensions/browser/content_verify_job.h 

enum FailureReason {
    // No failure.
    NONE,
    // Failed because there were no expected hashes at all (eg they haven't
    // been fetched yet).
    MISSING_ALL_HASHES,
    // Failed because this file wasn't found in the list of expected hashes.
    NO_HASHES_FOR_FILE,
    // Some of the content read did not match the expected hash.
    HASH_MISMATCH
  };

lazyboy@, can you take a look?

Issue appears to be contained - we published a new version of the extension with two PNG file resources altered (one was the confirmed-failing one mentioned in https://bugs.chromium.org/p/chromium/issues/detail?id=729978#c3; one was replaced as a speculative change since it is visually similar and used in a similar fashion as the failing one).

After publishing the update, Chrome 59 restart picks up the update and automatically resolves the "extension corrupted" message and the extension behaves as we expect.

More details coming with references to the failed version for further investigation.

Test extension - copy of the one that had the content verification failure:

https://chrome.google.com/webstore/detail/norton-security-toolbar-t/gnafgoapchgjnjcbfjohcbakohefoido

Looks like this is the same issue as  https://crbug.com/720597  that I was working on. I'll keep that bug updated.

Summary: files that are of size equals multiple of content hash's block_size (4096 bytes) always fail content verification due to bug. The file in question: hide_default.PNG is 8192 (2 * 4096),  bug 720597  is due to a file "Ancient Assyria.cwz" which is of size 16384 bytes (4 * 4096).

Hello.

My extension will not be installed because of the "MISSING_ALL_HASHES" reason.

Any idea on how to resolve this?

Thank you.