More decryption functions and stub test cases for AWS

provider_test.go

@@ -8,6 +8,15 @@ import (
 	"testing"
 )
 
+type mockProvider struct {
+	out []byte
+	err error
+}
+
+func (p mockProvider) GetSecret(_ string) ([]byte, error) {
+	return p.out, p.err
+}
+
 type testProviderCase struct {
 	Name string
 	Key  string