Feature request: Provide low-entropy UACH on Real-Time Reporting postbacks #1239
Description
The new Real-Time Reporting API histogram postbacks' usability could be improved with the inclusion of low entropy UACH. Opening this issue per suggestion in the 31 July WICG discussion.
Chrome Canary DevTools, 31-July:
POST /.well-known/interest-group/real-time-report HTTP/1.1
Accept-Encoding: gzip, deflate, br, zstd
Accept-Language: en-US,en;q=0.9
Cache-Control: no-cache
Connection: keep-alive
Content-Length: 206
Content-Type: application/cbor
Host: test.dabbs.net
Origin: https://www.mojotest.com
Pragma: no-cache
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: no-cors
Sec-Fetch-Site: cross-site
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36