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Hashes in JSON output are not deterministically ordered #165
When I create an SPDX document with multiple hashes on a package, the order of the hashes in the output json varies.
The hashes should follow a deterministic ordering.
Please let us know whether we shall prepare an PR for this. Perhaps it must be generalized to other output formats as well to produce comparable outputs.
@karsten-klein - Thanks for raising the issue. I agree, it should be deterministic.
There is already a sorting in the JSON output, it must somehow miss the hash algorithms.
Since there are substantial changes to the SPDX 3 version, I would prefer to make the changes there to avoid merge conflicts unless you consider this to be a serious enough issue for a patch release.
@karsten-klein - Let me know if this is still an issue with the 2.0.0-RC2 version of the tools. If this is still an issue, can you post an example how to reproduce?
Arrays: An array structure is represented as square brackets surrounding zero or more items. Items are separated by commas.
Objects: An object structure is represented as a pair of curly brackets surrounding zero or more name/value pairs (or members). A name is a string containing only ASCII characters (0x21-0x7F). The names within an object must be unique. A single colon comes after each name, separating the name from the value. A single comma separates a value from a following name. The name/value pairs are ordered by name.
Does the current spec already covered the hash ordering?
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goneall commentedon Aug 15, 2024
@karsten-klein - Thanks for raising the issue. I agree, it should be deterministic.
There is already a sorting in the JSON output, it must somehow miss the hash algorithms.
Since there are substantial changes to the SPDX 3 version, I would prefer to make the changes there to avoid merge conflicts unless you consider this to be a serious enough issue for a patch release.
If a PR could be opened against the v3 branch of the spdx-java-jackson-store repo where the sort is done, that would be great.
goneall commentedon Feb 1, 2025
@karsten-klein - Let me know if this is still an issue with the 2.0.0-RC2 version of the tools. If this is still an issue, can you post an example how to reproduce?
bact commentedon Apr 17, 2025
@goneall @karsten-klein should we have this in the spec as well? As part of canonical serialization?
https://spdx.github.io/spdx-spec/v3.0.1/serializations/
Does the current spec already covered the hash ordering?