Attested TLS Token Binding

Document Type Expired Internet-Draft (individual)
Authors Giridhar Mandyam  , Laurence Lundblade  , Jon Azen 
Last updated 2019-07-28 (latest revision 2019-01-24)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Token binding allows HTTP servers to bind bearer tokens to TLS connections. In order to do this, clients or user agents must prove possession of a private key. However, proof-of-possession of a private key becomes truly meaningful to a server when accompanied by an attestation statement. This specification describes extensions to the existing token binding protocol to allow for attestation statements to be sent along with the related token binding messages.


Giridhar Mandyam (
Laurence Lundblade (
Jon Azen (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)