Nope. If it was just the key, I would probably be able to recreate it after identifying which character has been bit shifted or importing a clean copy of the key from my virtual machine.
In your case, the whole "branch" is missing. In fact, multiple branches. Because CBS is the main key, and then there are multiple subkeys each of which contain more than a 1000 keys.
If it was a key or 10-20-50-100 I'd go for it, because we deal with those due to the fact that we know what is missing (usually reported by SURT), and if you look closely, you'll see that it reports PackageDetect and Packages errors.
The two keys in question contain data about which Packages are present (installed) on the system and report their state for each of the packages of an update individually.
I'm sorry to be the bearer of bad news,