Static Policies

Static verification policies are predefined for verifying credentials in standard use cases. The following lists out supported static policies by SSI-Kit along with their arguments

General policies

Name	Description	Argument
SignaturePolicy	Verifies the signature of the W3C Verifiable credential.	None
JsonSchemaPolicy	Verifies against the associated JSON schema. Note that the attribute credentialSchema must be set and the JSON schema must be accessible by the http URL.	None
ValidFromBeforePolicy	Verifies the credentials based on their valid-from date	None
ExpirationDateAfterPolicy	Verifies the credentials based on their expiration date	None
ChallengePolicy	Verifies challenge	ChallengePolicyArg, which contains specific challenges to check against.
VpTokenClaimPolicy	Verify verifiable presentation by OIDC/SIOPv2 VP token claim.	VpTokenClaim
CredentialStatusPolicy	Verifies credentials based on their status	None

EBIS/ESSIF Specific Policies

Name	Description	Argument
EbsiTrustedSchemaRegistryPolicy	Verify by EBSI Trusted Schema Registry. Checks performed: credential schema id has the correct format	None
EbsiTrustedIssuerDidPolicy	Verify by trusted issuer did. Checks performed: issuer did is resolvable against EBSI	None
EbsiTrustedIssuerRegistryPolicy	Verify by EBSI Trusted Issuer Registry record. Checks performed: issuer has any record on trusted registry having an authorization claim matching the VC schema issuer's TIR record contains a VerifiableId credential the authorized claim record (from p.1) has the type provided as argument to the policy issuer's accreditation is valid - verifies against EbsiTrustedIssuerAccreditationPolicy	EbsiTrustedIssuerRegistryPolicyArg
EbsiTrustedSubjectDidPolicy	Verify by trusted subject did. Checks performed: subject did is resolvable against EBSI	None
EbsiTrustedIssuerAccreditationPolicy	Verify by issuer's authorized claims. Checks performed: fetches the attribute specified by the termsOfUse property checks whether the credential stored as the attribute body has the required accreditation claims to match the current VC schema	None
IssuedDateBeforePolicy	Verify by issuance date.	None

GAIA-X specific policies

Name	Description	Argument
GaiaxTrustedPolicy	Verify Gaiax trusted fields.	None
GaiaxSDPolicy	Verify Gaiax SD fields.	None