gcm | Google Cloud Messaging ) - CCS - CCS ( XMPP Cloud Connection Server | Android library

AES-KW is a key wrap algorithm described in RFC3394. The algorithm is used to wrap i. e. encrypt a key. The input, i.e. the key to be encrypted, must be an integer multiple of 8 bytes, s. also here.

The key to be encrypted is passed in SubtleCrypto.wrapKey() in the 2nd parameter key as CryptoKey and must therefore be exported before the actual encryption. For this purpose the format in which the key is exported is specified in the 1st parameter format:

In my case, I used BitBucket via HTTPS and not via SSH. Therefore I had to change it.

1. Follow this guide to create and add a new SSH key.
2. Follow this guide to switch from HTTPS to SSH.

Unrelated and optional:

While you are at this security related task, activate 2FA in your BitBucket security settings.

Possible solution

Upgrade google analytics to firebase analaytics. Hope it'll solve your problems.Also upgrade all the library what're you using.

For me below solutions solve the problem.

Add PendingIntent.FLAG_IMMUTABLE to your pending intents.

Here is an example -

PendingIntent pendingIntent = PendingIntent.getActivity(this, alarmID, notificationIntent, PendingIntent.FLAG_IMMUTABLE);

For further information follow this link - https://developer.android.com/reference/android/app/PendingIntent#FLAG_IMMUTABLE

Imo, it's a bug in Paramiko. It does not handle correctly absence of server-sig-algs extension on the server side.

Try disabling rsa-sha2-* on Paramiko side altogether:

There is no message coming from the client to indicate a handshake failure and the TCP connection has not been closed.

The handshake, as such, does not fail. OpenSSL has no facility to require a minimum classic-DH size in keyexchange (for DHE and DH_anon which OpenSSL calls ADH), so nodejs enforces this limit after OpenSSL completes the handshake but before allowing any data to pass -- as it also does for the server cert name check, which OpenSSL originally didn't implement and now implements differently from what nodejs chose. See onSecureConnect in _tls_wrap.js .

The TCP connection is closed, and that is probably why your server is sending close_notify -- or trying to; this send will actually fail because of the TCP closure. The servers I tested (OpenSSL and Java) both show TCP closed from the (nodejs) client, although OpenSSL does so implicitly (as read count 0), and they respond differently: only older Java 8 (before the new 11 stack was backported in 8u261) tried to send close_notify in 'response'. I suspect your server just isn't logging the TCP closure; try an external tool like wireshark or similar.

To be clear, you set in the client 4096-bit DH parameters, not a key. Only the parameters are set in the server; the keys at both ends are generated per-handshake (in the subgroup defined by the parameters) which is why they are called ephemeral. And (user-chosen) DH parameters set in the client are ignored (but see next).

FYI: There is a fairly recent protocol option, RFC7919, for TLS1.2* to use standardized (not user-chosen) DHE/anon groups, now called FFDHE to distinguish from ECDHE, which the client can request with the former supported_curves extension now repurposed as supported_groups (in particular it could demand 4096), but OpenSSL and thus nodejs does not implement this option. In 1.3 supported_groups is required, but the FFDHE groups are not required or even particularly encouraged, and AFAICT OpenSSL doesn't (yet?) support them there either -- and anyway 1.3 doesn't allow 'anon' at all. (* Formally 7919 applies to 1.1 and 1.0 also, but I can't imagine any implementation includes 7919 but not 1.2, so you would never need lower protocols.)

This is a stab in the dark, as I don't understand that openssl output much, but judging by the timing and the keywords 'openssl' and 'Lets Encrypt' this has a reasonably high chance of success.

On September 30, 2021 Let's Encrypt's old Root Certificate has expired. This had a major implication that now they have started to use their own root cert which should be trusted by most devices. 'Most' part was troublesome as there are some devices alive which did not receive updates in years. So the people at Let's Encrypt found a way to still remain supported/trusted on those devices, just under one condition - its openssl version must be 1.1.0+ (which is already 4+ years old). Another important detail is that this openssl version requirement also applies to systems that would have otherwise trusted LE's new cert.

So I've seen numerous people over October scrambling to get LE issued certificates to be trusted again by their systems and the answer was always as simple as: Get your openssl / libopenssl updated to v1.1.0+

I was facing a similar issue with DevOps build agents. But I can access the DevOps server web interface without any issue.

To solve this,

• I updated my Let's Encrypt client (I'm using Certify The Web)
• I have renewed my certificate

After that, the DevOps agent is able to do a Git pull.

Your aws_iam_policy policy has no effect. You forgot to associate it with the role:

Since GCM is based on CTR, decryption with CTR is in principle also possible. However, this should generally not be done in practice, since it skips the authentication of the ciphertext, which is the added value of GCM over CTR. The correct way is to decrypt on the NodeJS side with GCM and properly consider the authentication tag.
The authentication tag is automatically appended to the ciphertext by the WebCrypto API, while the crypto module of NodeJS handles ciphertext and tag separately. Therefore, not only the nonce but also the authentication tag must be separated on the NodeJS side.

The following JavaScript/WebCrypto code demonstrates the encryption: