hi, 

    suppose one application certificate is issued by one fabric org's ca and the certificate needs being verified in  an application chaincode. 

    One way is to get the org's root ca certificate. But I do not know how to obtain the root certificate.

     Another way:  similar to forming a proposal, the application certificate is passed in chaincde as a creator,  and  use identity.Validate() to validate.  To do that, the chaincode including the following code:

      channelID := stub.GetChannelID()

     creatorByte, _ := stub.GetCreator()

     mspObj := mspmgmt.GetIdentityDeserializer(channelID)

     creator, err := mspObj.DeserializeIdentity(creatorByte)

     err = creator.Validate()

    return shim.Error("[error] return:" + err.Error())

after the successful import mgmt package and instantiation, the chaincode runs timeout.

  How to solve this problem? Thank you.

  Best regards,

qs meng