After some years of getting the package server architecture in place and working (mostly) reliably, @staticfloat and I finally had some time to work on collecting logs into a data warehouse (we’re using Snowflake ) and designing a set of queries over the logs that we can run and publish regularly. Th…

[image] ImreSamu: How can I query this info ? julia> using Base.BinaryPlatforms julia> HostPlatform() macOS aarch64 {cxxstring_abi=cxx11, julia_version=1.8.0, libgfortran_version=5.0.0} julia> triplet(HostPlatform()) "aarch64-apple-darwin-libgfortran5-cxx11-julia_version+1.8.0"

It occurs to me that it would be really handy to have all of the latest rollup tables available for download in a single sqlite database file that someone could download and start writing SQL queries against. I’m sure I could figure that out with a bit of effort, but I’m posting it here hoping that …

As much as I agree with all of these points, I think this is where the community can hopefully step in because I don’t really have time to do all of that. Here are some details of how the processing works. At the core of this is the logs table, which we upload new log data into regularly. Here is t…

One thing I did do from this list is create a Slack channel to discuss the data: #pkg-log-data on the JuliaLang Slack.

[image] StefanKarpinski: Using encryption guarantees that every hash value has multiple IPv4 and IPv6 addresses that correspond to it, which would be likely but not guaranteed if we used a hash function instead of encryption. Is this right? You must be padding the addresses up to 1024 bits to…

The Feistel cipher is not a block cipher, it is format preserving , which is why I’m using it. There is no fixed block size, it adjusts to whatever the size of the data is, up to 128 bytes (2 × 512 bits): it induces a “random” permutation of the space of all byte vectors of a given size. Of course th…

You can also tell this all of this by playing around with the code. For a given key: The encrypt! function encrypts any n-byte vector as another n-byte vector; The decrypt! function inverts that mapping, taking the n-byte cipher text vector back to the original plain text vector. Since this is th…

Ok I’ve looked at the code and believe you now. :slight_smile: Feistel is a block cipher, but what you didn’t mention is you wrap the hash round so it gives the desired block length.

I guess I would say that a Feistel network is a construction that can be used to build block ciphers, rather than being a block cipher itself. But maybe that’s just splitting hairs. In any case, it is used here to construct, for each specific size of input, a cipher whose block size is precisely the…

Thank you for this great work! I am looking at csv files and was wondering if there is a way to get the package_uuid form the Package name or viceversa.

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cvalero October 14, 2021, 7:56pm 38

Thanks!

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