Crate ockam_credential

Attribute based, privacy preserving, anonymous credentials.

This crate provides the ability to issue and verify attribute based, privacy preserving, anonymous credentials.

The issuer of a credential signs a collection of statements that attest to attributes of the subject of that credential. The subject (or a holder on their behalf) can then selectively disclose these signed statements to a verifier by presenting a cryptographic proof of knowledge of the issuer's signature without revealing the actual signature or any of the other statements that they didn't wish to disclose to this verifier.

Applications can decide if a subject is authorized to take an action based on the attributes of the subject that were proven to be signed by trusted issuers. Since only limited and necessary information is revealed about subjects this improves efficiency, security and privacy of applications.

The main Ockam crate re-exports types defined in this crate.

Structs

BlindCredential	A blind credential that will be unblinded by the holder
Credential	A credential that can be presented
CredentialAttributeSchema	An attribute describes a statement that the issuer of a credential is signing about the subject of the credential.
CredentialBlinding	The information needed to convert a BlindCredential to a Credential
CredentialOffer	A credential offer is how an issuer informs a potential holder that a credential is available to them
CredentialPresentation	Indicates how to present a credential
CredentialRequest	A request for a credential generated from a credential offer
CredentialSchema	A schema describes the data format of a credential.
Holder	Represents a holder of a credential
Issuer	Represents an issuer of a credential
PresentationManifest	A list of the accepted schemas, public keys, and required to be revealed attributes from a verifier
Verifier	Methods for verifying presentations

Enums

CredentialAttribute	The attribute data that is signed by
CredentialAttributeType	The data type of an attribute's value.

Constants

SECRET_ID

The label to indicate the secretid attribute in a schema/credential