Added GaiaxTrustedPolicy

src/main/kotlin/id/walt/auditor/PolicyRegistry.kt

@@ -20,5 +20,6 @@ object PolicyRegistry {
         register(IssuanceDateBeforePolicy())
         register(ValidFromBeforePolicy())
         register(ExpirationDateAfterPolicy())
+        register(GaiaxTrustedPolicy())
     }
 }

src/main/kotlin/id/walt/auditor/VerificationPolicy.kt

@@ -9,6 +9,7 @@ import id.walt.services.vc.JwtCredentialService
 import id.walt.services.vc.VcUtils
 import id.walt.vclib.Helpers.encode
 import id.walt.vclib.model.VerifiableCredential
+import id.walt.vclib.vclist.GaiaxCredential
 import id.walt.vclib.vclist.VerifiablePresentation
 import kotlinx.serialization.Serializable
 import mu.KotlinLogging
@@ -161,6 +162,31 @@ class ExpirationDateAfterPolicy : VerificationPolicy {
     }
 }
 
+class GaiaxTrustedPolicy : VerificationPolicy {
+    override val description: String = "Verify Gaiax trusted fields"
+    override fun verify(vc: VerifiableCredential): Boolean {
+        // VPs are not considered
+        if (vc is VerifiablePresentation) {
+            return true
+        }
+
+        val gaiaxVc = vc as GaiaxCredential
+
+        // TODO: validate trusted fields properly
+        if (gaiaxVc.credentialSubject.DNSpublicKey.length < 0) {
+            log.debug { "DNS Public key not valid." }
+            return false
+        }
+
+        if (gaiaxVc.credentialSubject.ethereumAddress.id.length < 0) {
+            log.debug { "ETH address not valid." }
+            return false
+        }
+
+        return true
+    }
+}
+
 private fun parseDate(date: String?) = try {
     dateFormatter.parse(date)
 } catch (e: Exception) {