docs(files): document custom_download_url signature verification semantics#140
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karlrank merged 1 commit intoJul 16, 2026
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…ntics The signature now covers a canonical form of the URL (query params sorted by key), so verification is independent of query parameter order. Document that consumers should pass the request URL exactly as received, that all params must be unmodified, and the 15-minute signature TTL.
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Documents how
verifyCustomDownloadUrltreats the request URL, following the file-api change that canonicalizes the signed message (query params sorted by key):Context: the previous byte-exact verification deterministically failed for consumers behind API Gateway REST (payload v1), which alphabetizes query params — e.g. the erp-integration file proxy streaming endpoint. Companion changes:
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