support for endorsed values #200

Author: rajputshivam2324

coserv/quads.go

@@ -10,6 +10,13 @@ type RefValQuad struct {
 	RVTriple    *comid.ValueTriple `cbor:"2,keyasint"`
 }
 
+// EndorsedValQuad represents an endorsed-values result quad as per CoSERV
+// It mirrors RefValQuad but carries endorsed values instead of reference values
+type EndorsedValQuad struct {
+	Authorities *[]comid.CryptoKey `cbor:"1,keyasint"`
+	EVTriple    *comid.ValueTriple `cbor:"2,keyasint"`
+}
+
 type AKQuad struct {
 	Authorities *[]comid.CryptoKey `cbor:"1,keyasint"`
 	AKTriple    *comid.KeyTriple   `cbor:"2,keyasint"`

coserv/resultset.go

@@ -11,9 +11,9 @@ import (
 )
 
 type ResultSet struct {
-	RVQ *[]RefValQuad `cbor:"0,keyasint,omitempty"`
-	AKQ *[]AKQuad     `cbor:"3,keyasint,omitempty"`
-	// TODO(tho) add endorsed values
+	RVQ *[]RefValQuad      `cbor:"0,keyasint,omitempty"`
+	EVQ *[]EndorsedValQuad `cbor:"1,keyasint,omitempty"`
+	AKQ *[]AKQuad          `cbor:"3,keyasint,omitempty"`
 	// TODO(tho) add CoTS
 	Expiry          *time.Time `cbor:"10,keyasint"`
 	SourceArtifacts *[]cmw.CMW `cbor:"11,keyasint,omitempty"`
@@ -35,6 +35,17 @@ func (o *ResultSet) AddReferenceValues(v RefValQuad) *ResultSet {
 	return o
 }
 
+// AddEndorsedValues adds the supplied endorsed-values quad to the target ResultSet
+func (o *ResultSet) AddEndorsedValues(v EndorsedValQuad) *ResultSet {
+	if o.EVQ == nil {
+		o.EVQ = new([]EndorsedValQuad)
+	}
+
+	*o.EVQ = append(*o.EVQ, v)
+
+	return o
+}
+
 // AddAttestationKeys adds the supplied ak quad to the target ResultSet
 func (o *ResultSet) AddAttestationKeys(v AKQuad) *ResultSet {
 	if o.AKQ == nil {
@@ -68,6 +79,7 @@ func (o ResultSet) Valid() error {
 	if o.Expiry == nil {
 		return errors.New("missing mandatory expiry")
 	}
+	// Nothing else to validate structurally here; combinations are checked at Coserv level
 	// The coherency between query and results must be checked by the Coserv's
 	// Valid()
 	return nil