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A new token type: SeCure Rate Assuring Protocol With PrivacY (Scrappy) #292
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This is Abstracts of Scrappy
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This proposal is making Scrappy(SeCure Rate Assuring Protocol with PrivacY),
a new scheme with strong privacy for Privacy State Token.
Scrappy is a rate-limiter the same as Privacy Pass, but this restants to the timing correlation attack.
Also, Scrappy works as E2E (between users and web service) in the hot paths (i.e., sign and verify),
so that the issuer does not need to receive high access from users.
Note
we can use other unique resources, the same as the Trust Token API.
Reference
Scrappy:
https://www.ndss-symposium.org/ndss-paper/scrappy-secure-rate-assuring-protocol-with-privacy/
Privacy State Token:
https://developers.google.com/privacy-sandbox/protections/private-state-tokens?hl=en
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