#Policies

For verification of verifiable credentials, the walt.id verifier SDKs offer a range of predefined static and parameterized verification policies, which are ready-to-use and are designed for common use cases.

#Static Verification Policies For Verifiable Credentials

Predefined and covering a variety of common use cases, enabling developers to verify credentials easily.

#JWT Signature

Used as JwtSignaturePolicy(), it verifies the signature of the W3C JWT-VC.

#Expiration Date

Used as ExpirationDatePolicy(), it verifies that the credentials expiration date (exp for JWTs) has not been exceeded.

#Not Before Date

Used as NotBeforeDatePolicy(), it verifies that the credentials not-before date (for JWT: nbf, if unavailable: iat - 1 min) is correctly exceeded.

#JSON Schema

Used as JsonSchemaPolicy(), it verifies a credentials data against a JSON Schema (Draft 7 - see here).

#Static Verification Policies For Verifiable Presentations

#Holder Binding

Used as HolderBindingPolicy(), it verifies that issuer of the Verifiable Presentation (presenter) is also the subject of all Verifiable Credentials contained within.