salty nonce blinding factor
Definition
For ease of sharing a secret and hiding information with this secret of Blindable State TELs we use a Salty Nonce Blinding Factor. You’d like to hide the state of certain credentials to some verifiers in the future, while keeping the state verifiable for others.
How
A way to share the key to blind/unblind the state of a TEL is
- HTOP, HMAC-Based One-Time Password
- Time-Based One-Time Password
- HDKM, Hierarchical Deterministic Key Management, based on a shared master key you could split off subkeys in a predictable manner.
The blinding is performed by the issuer, the issuee could request the blinding.
Example
I don’t want my employment states shared in the future with former possible employers.