diff --git a/extensions/idp/pkg/backends/cs3/identifier/cs3.go b/extensions/idp/pkg/backends/cs3/identifier/cs3.go
index 9b0bfa823..2370a0734 100644
--- a/extensions/idp/pkg/backends/cs3/identifier/cs3.go
+++ b/extensions/idp/pkg/backends/cs3/identifier/cs3.go
@@ -29,6 +29,7 @@ var cs3SpportedScopes = []string{
 	lico.ScopeRawSubject,
 }
 
+// CS3 Backend holds the data for the CS3 identifier backend
 type CS3Backend struct {
 	supportedScopes []string
 
diff --git a/extensions/idp/pkg/backends/cs3/identifier/session.go b/extensions/idp/pkg/backends/cs3/identifier/session.go
index aab650c2a..12ec61812 100644
--- a/extensions/idp/pkg/backends/cs3/identifier/session.go
+++ b/extensions/idp/pkg/backends/cs3/identifier/session.go
@@ -34,6 +34,7 @@ type cs3Session struct {
 	when      time.Time
 }
 
+// User returns the cs3 user of the session
 func (s *cs3Session) User() *cs3user.User {
 	return s.u
 }
diff --git a/extensions/idp/pkg/backends/cs3/identifier/user.go b/extensions/idp/pkg/backends/cs3/identifier/user.go
index a3fcbc44b..135bb3740 100644
--- a/extensions/idp/pkg/backends/cs3/identifier/user.go
+++ b/extensions/idp/pkg/backends/cs3/identifier/user.go
@@ -15,38 +15,47 @@ func newCS3User(u *cs3user.User) (*cs3User, error) {
 	}, nil
 }
 
+// Subject returns the cs3 users opaque id as sub
 func (u *cs3User) Subject() string {
 	return u.u.GetId().GetOpaqueId()
 }
 
+// Email returns the cs3 users email
 func (u *cs3User) Email() string {
 	return u.u.GetMail()
 }
 
+// EmailVerified returns the cs3 users email verified flag
 func (u *cs3User) EmailVerified() bool {
 	return u.u.GetMailVerified()
 }
 
+// Name returns the cs3 users displayname
 func (u *cs3User) Name() string {
 	return u.u.GetDisplayName()
 }
 
+// FamilyName always returns "" to fulfill the UserWithProfile interface
 func (u *cs3User) FamilyName() string {
 	return ""
 }
 
+// GivenName always returns "" to fulfill the UserWithProfile interface
 func (u *cs3User) GivenName() string {
 	return ""
 }
 
+// Username returns the cs3 users username
 func (u *cs3User) Username() string {
 	return u.u.GetUsername()
 }
 
+// UniqueID returns the cs3 users opaque id
 func (u *cs3User) UniqueID() string {
 	return u.u.GetId().GetOpaqueId()
 }
 
+// BackendClaims returns additional claims the cs3 users provides
 func (u *cs3User) BackendClaims() map[string]interface{} {
 	claims := make(map[string]interface{})
 	claims[konnect.IdentifiedUserIDClaim] = u.u.GetId().GetOpaqueId()
@@ -54,10 +63,12 @@ func (u *cs3User) BackendClaims() map[string]interface{} {
 	return claims
 }
 
+// BackendScopes returns nil to fulfill the UserFromBackend interface
 func (u *cs3User) BackendScopes() []string {
 	return nil
 }
 
+// RequiredScopes returns nil to fulfill the UserFromBackend interface
 func (u *cs3User) RequiredScopes() []string {
 	return nil
 }