diff --git a/src/flow.ts b/src/flow.ts
index 1a04bfc2..50dcad3e 100644
--- a/src/flow.ts
+++ b/src/flow.ts
@@ -1,6 +1,6 @@
 import { inflateString, base64Decode } from './utility';
 import { verifyTime } from './validator';
-import libsaml from './libsaml';
+import libsaml, { SignatureVerifierOptions } from './libsaml';
 import {
   extract,
   loginRequestFields,
@@ -134,9 +134,10 @@ async function postFlow(options): Promise<FlowResult> {
 
   let samlContent = String(base64Decode(encodedRequest));
 
-  const verificationOptions = {
+  const verificationOptions: SignatureVerifierOptions = {
     cert: from.entityMeta,
     signatureAlgorithm: from.entitySetting.requestSignatureAlgorithm,
+    keyFile: from.entitySetting.keyFile
   };
 
   const decryptRequired = from.entitySetting.isAssertionEncrypted;
diff --git a/src/types.ts b/src/types.ts
index e17f8d28..0c082edc 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -59,6 +59,7 @@ export interface SAMLDocumentTemplate {
 export type ServiceProviderSettings = {
   metadata?: string | Buffer;
   entityID?: string;
+  keyFile?: string;
   authnRequestsSigned?: boolean;
   wantAssertionsSigned?: boolean;
   wantMessageSigned?: boolean;
@@ -69,8 +70,8 @@ export type ServiceProviderSettings = {
   isAssertionEncrypted?: boolean;
   encPrivateKey?: string | Buffer;
   encPrivateKeyPass?: string | Buffer;
-  assertionConsumerService?: Array<{ Binding: string, Location: string }>;
-  singleLogoutService?: Array<{ Binding: string, Location: string }>;
+  assertionConsumerService?: Array<{ isDefault?: boolean, Binding: string, Location: string }>;
+  singleLogoutService?: Array<{ isDefault?: boolean, Binding: string, Location: string }>;
   signatureConfig?: SignatureConfig;
   loginRequestTemplate?: SAMLDocumentTemplate;
   logoutRequestTemplate?: SAMLDocumentTemplate;
@@ -84,27 +85,23 @@ export type ServiceProviderSettings = {
 
 export type IdentityProviderSettings = {
   metadata?: string | Buffer;
-
   /** signature algorithm */
   requestSignatureAlgorithm?: string;
-
   /** template of login response */
   loginResponseTemplate?: LoginResponseTemplate;
-
   /** template of logout request */
   logoutRequestTemplate?: SAMLDocumentTemplate;
-
   /** customized function used for generating request ID */
   generateID?: () => string;
-
   entityID?: string;
+  keyFile?: string;
   privateKey?: string | Buffer;
   privateKeyPass?: string;
   signingCert?: string | Buffer;
   encryptCert?: string | Buffer; /** todo */
   nameIDFormat?: string[];
-  singleSignOnService?: Array<{ [key: string]: string }>;
-  singleLogoutService?: Array<{ [key: string]: string }>;
+  singleSignOnService?: Array<{ isDefault?: boolean, Binding: string, Location: string }>;
+  singleLogoutService?: Array<{ isDefault?: boolean, Binding: string, Location: string }>;
   isAssertionEncrypted?: boolean;
   encPrivateKey?: string | Buffer;
   encPrivateKeyPass?: string;