A parsed WWW-Authenticate: Payment … challenge.
WWW-Authenticate: Payment …
requestEncoded and opaque are kept as the exact base64url strings the server sent: the challenge id is an HMAC over them, so re-encoding either one would invalidate the credential built from this challenge.
requestEncoded
opaque
Optional
A parsed
WWW-Authenticate: Payment …challenge.requestEncodedandopaqueare kept as the exact base64url strings the server sent: the challenge id is an HMAC over them, so re-encoding either one would invalidate the credential built from this challenge.