tree 927e60fd5ca593c1a54a8ce19540ac92fd6a46c9
parent e3e1e8bb43998868122c9747af56622921df2bd4
author QUICHE team <quiche-dev@google.com> 1679611867 -0700
committer Copybara-Service <copybara-worker@google.com> 1679611916 -0700

Updating PublicMetadataHashWithHKDF function according to the latest IETF draft before we use it in prod. Adding the latest test vectors as well.

This CL also makes sure that openssl RSA struct is not used as storage for the exponent augmented with the public metadata in blinder as well as the verifier in third_party/anonymous_tokens/cpp/crypto.

These changes will let us enable public metadata support in prod in follow-up CLs as well as accept empty public metadata as a valid value when public metadata support in enabled.

PiperOrigin-RevId: 518984326