Yivi Credential Scheme
Yivi is a privacy-friendly identity solution, that can be used to issue and verify identity materials or credentials. Yivi credentials are unique in that they consist of attributes that can be independently disclosed, allowing the rest of the identity to remain undisclosed. An attribute describes a single aspect of an identity. The cards below illustrate how the various components of the Yivi trust system are addressed throughout the Yivi ecosystem. More in depth explanation can be found in the Yivi Documentation.
A schemes is a directory containing all information about the issuers, the credentials they issue, and the attributes
these credentials carry.
Currently Yivi bears two schemes. One that is jointly managed by Privacy by Design Foundation and Yivi team at Caesar
and a demo scheme to demonstrate new credentials and test out additions to the main scheme.
Scheme is the first part in addressing a credential or attribute.
Issuers in the IRMA system are trusted parties that create and give out digital credentials to users. Issuers can issue different types of credentials,
but they must be approved by a scheme manager before they can start issuing them. and Issuer within a scheme can be addressed as:
scheme.issuer
A credential contains a group of attributes that describe a user's identity,
as verified and signed by the Identity Provider (Issuer). A credential in Yivi can be adressed as:
scheme.issuer.credential
An attribute is the smallest unit Yivi credential system. Each attribute describes a single feature of a person's identity.
such as age or address. By design, it is possible to disclose even a single attribute from list of all attributes in
the credential. The attribute is addressed as: scheme.issuer.credential.attribute