diff --git a/common/golang/cctrusted_base/api.go b/common/golang/cctrusted_base/api.go
index 4e99dea2..5f70a23d 100644
--- a/common/golang/cctrusted_base/api.go
+++ b/common/golang/cctrusted_base/api.go
@@ -29,7 +29,7 @@ func (t CC_Type) String() string {
 type CCTrustedAPI interface {
 	GetDefaultAlgorithm() (TCG_ALG, error)
 
-	GetCCReport(nonce, userData string, extraArgs any) (Report, error)
+	GetCCReport(nonce, userData string, extraArgs map[string]any) (Report, error)
 	DumpCCReport(reportBytes []byte) error
 
 	GetMeasurementCount() (int, error)
diff --git a/common/golang/cctrusted_base/model.go b/common/golang/cctrusted_base/model.go
index 184d63dd..b849dd11 100644
--- a/common/golang/cctrusted_base/model.go
+++ b/common/golang/cctrusted_base/model.go
@@ -18,3 +18,10 @@ type Report interface {
 	IMRGroup() IMRGroup
 	Dump(QuoteDumpFormat)
 }
+
+type CcReport struct {
+	Outblob    []byte
+	Auxblob    []byte
+	Provider   string
+	Generation int
+}