diff --git a/js/identityWallet/identityWallet.d.ts b/js/identityWallet/identityWallet.d.ts
index 2f5c3d51..cdaae040 100644
--- a/js/identityWallet/identityWallet.d.ts
+++ b/js/identityWallet/identityWallet.d.ts
@@ -43,12 +43,14 @@ export declare class IdentityWallet {
     private createMessage;
     private makeReq;
     private makeRes;
+    private messageCannonicaliser;
     getPublicKeys: (encryptionPass: string) => PublicKeyMap;
     private initializeAndSign;
     validateJWT<T, R>(receivedJWT: JSONWebToken<T>, sentJWT?: JSONWebToken<R>, customRegistry?: IRegistry): Promise<void>;
     asymEncrypt: (data: Buffer, publicKey: Buffer) => Promise<string>;
     asymEncryptToDidKey: (data: Buffer, keyRef: string, customRegistry?: IRegistry) => Promise<string>;
     asymDecrypt: (data: string, decryptionKeyArgs: IKeyDerivationArgs) => Promise<Buffer>;
+    sign: (data: Buffer, pass: string) => Buffer;
     private sendTransaction;
     transactions: {
         sendTransaction: (request: ITransactionEncodable, pass: string) => Promise<string>;
@@ -64,17 +66,17 @@ export declare class IdentityWallet {
         }, pass: string, recieved?: JSONWebToken<R>) => Promise<JSONWebToken<T_1>>;
         interactionTokens: {
             request: {
-                auth: ({ expires, aud, ...message }: WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, pass: string) => Promise<JSONWebToken<Pick<WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, "description" | "callbackURL">>>;
-                offer: ({ expires, aud, ...message }: WithExtraOptions<CredentialOfferRequestAttrs>, pass: string) => Promise<JSONWebToken<Pick<WithExtraOptions<CredentialOfferRequestAttrs>, "callbackURL" | "offeredCredentials">>>;
-                share: ({ expires, aud, ...message }: WithExtraOptions<ICredentialRequestAttrs>, pass: string) => Promise<JSONWebToken<Pick<WithExtraOptions<ICredentialRequestAttrs>, "callbackURL" | "credentialRequirements">>>;
-                payment: ({ expires, aud, ...message }: WithExtraOptions<PaymentRequestCreationArgs>, pass: string) => Promise<JSONWebToken<Pick<WithExtraOptions<PaymentRequestCreationArgs>, "description" | "transactionOptions" | "callbackURL">>>;
+                auth: ({ expires, aud, ...message }: WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, pass: string) => Promise<JSONWebToken<any>>;
+                offer: ({ expires, aud, ...message }: WithExtraOptions<CredentialOfferRequestAttrs>, pass: string) => Promise<JSONWebToken<any>>;
+                share: ({ expires, aud, ...message }: WithExtraOptions<ICredentialRequestAttrs>, pass: string) => Promise<JSONWebToken<any>>;
+                payment: ({ expires, aud, ...message }: WithExtraOptions<PaymentRequestCreationArgs>, pass: string) => Promise<JSONWebToken<any>>;
             };
             response: {
-                auth: ({ expires, aud, ...message }: WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, pass: string, recieved?: JSONWebToken<Authentication>) => Promise<JSONWebToken<Pick<WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, "description" | "callbackURL">>>;
-                offer: ({ expires, aud, ...message }: WithExtraOptions<CredentialOfferResponseAttrs>, pass: string, recieved?: JSONWebToken<CredentialOfferRequest>) => Promise<JSONWebToken<Pick<WithExtraOptions<CredentialOfferResponseAttrs>, "callbackURL" | "selectedCredentials">>>;
-                share: ({ expires, aud, ...message }: WithExtraOptions<ICredentialResponseAttrs>, pass: string, recieved?: JSONWebToken<CredentialRequest>) => Promise<JSONWebToken<Pick<WithExtraOptions<ICredentialResponseAttrs>, "callbackURL" | "suppliedCredentials">>>;
-                issue: ({ expires, aud, ...message }: WithExtraOptions<ICredentialsReceiveAttrs>, pass: string, recieved?: JSONWebToken<CredentialOfferResponse>) => Promise<JSONWebToken<Pick<WithExtraOptions<ICredentialsReceiveAttrs>, "signedCredentials">>>;
-                payment: ({ expires, aud, ...message }: WithExtraOptions<IPaymentResponseAttrs>, pass: string, recieved?: JSONWebToken<PaymentRequest>) => Promise<JSONWebToken<Pick<WithExtraOptions<IPaymentResponseAttrs>, "txHash">>>;
+                auth: ({ expires, aud, ...message }: WithExtraOptions<ExclusivePartial<IAuthenticationAttrs, "callbackURL">>, pass: string, recieved?: JSONWebToken<Authentication>) => Promise<JSONWebToken<any>>;
+                offer: ({ expires, aud, ...message }: WithExtraOptions<CredentialOfferResponseAttrs>, pass: string, recieved?: JSONWebToken<CredentialOfferRequest>) => Promise<JSONWebToken<any>>;
+                share: ({ expires, aud, ...message }: WithExtraOptions<ICredentialResponseAttrs>, pass: string, recieved?: JSONWebToken<CredentialRequest>) => Promise<JSONWebToken<any>>;
+                issue: ({ expires, aud, ...message }: WithExtraOptions<ICredentialsReceiveAttrs>, pass: string, recieved?: JSONWebToken<CredentialOfferResponse>) => Promise<JSONWebToken<any>>;
+                payment: ({ expires, aud, ...message }: WithExtraOptions<IPaymentResponseAttrs>, pass: string, recieved?: JSONWebToken<PaymentRequest>) => Promise<JSONWebToken<any>>;
             };
         };
     };
diff --git a/ts/identityWallet/identityWallet.ts b/ts/identityWallet/identityWallet.ts
index 2259accb..da299efe 100644
--- a/ts/identityWallet/identityWallet.ts
+++ b/ts/identityWallet/identityWallet.ts
@@ -481,6 +481,20 @@ export class IdentityWallet {
     decryptionKeyArgs: IKeyDerivationArgs,
   ) => this.vaultedKeyProvider.asymDecrypt(data, decryptionKeyArgs)
 
+  /**
+   * Signs the data with the identity key
+   * @param data - The data to sign
+   * @param pass - the password
+   */
+  public sign = (data: Buffer, pass: string) =>
+    this.vaultedKeyProvider.sign(
+      {
+        derivationPath: KeyTypes.jolocomIdentityKey,
+        encryptionPass: pass,
+      },
+      data,
+    )
+
   private sendTransaction = async (
     request: ITransactionEncodable,
     pass: string,