I am trying to import certificate to device keychain which I am getting my API. I have used these reference to save received data in certificate format. references: (SecPKCS12Import returns different results on iOS 11 than on iOS 10)
and Add Certificate to IOS Keychain in Swift
By doing some modification inorder to add the certificate to keychain I have done below code:

` func certificateFromCertificate(certP12: Data, psswd: String) {
let decodedData = certP12

    let keytmp : NSString = kSecImportExportPassphrase as NSString
    let options : NSDictionary = [keytmp : psswd]
    
    var certificateRef: SecCertificate? = nil
    
    var items : CFArray?
    
    let securityError: OSStatus = SecPKCS12Import(decodedData as CFData, options, &items)
    
    let theArray: CFArray = items!
    if securityError == noErr && CFArrayGetCount(theArray) > 0 {
        let newArray = theArray as [AnyObject] as NSArray
        let dictionary = newArray.object(at: 0)
        let secIdentity = (dictionary as AnyObject)[kSecImportItemIdentity as String] as! SecIdentity
        let securityError = SecIdentityCopyCertificate(secIdentity , &certificateRef)
        if securityError != noErr {
            certificateRef = nil
        }
    }
    
            var keychainQueryDictionary = [String : Any]()

            if let tempSecCert = certificateRef {
                keychainQueryDictionary = [kSecClass as String : kSecClassCertificate, kSecValueRef as String : tempSecCert, kSecAttrLabel as String: "My Certificate"]
            }

            let summary =  SecCertificateCopySubjectSummary(certificateRef!)!  as String
            print("Cert summary: (summary)")

            let status = SecItemAdd(keychainQueryDictionary as CFDictionary, nil)

        print(SecCopyErrorMessageString(status, nil))

}`

I am getting proper certificate summary and also this print(SecCopyErrorMessageString(status, nil))
is returning no error. Optional(No error.)

Doubt I have is whether this certificate is properly installed in the device keychain or not. How do I verify that? Please note I don’t want to forcefully trust the certificate .

I tried

`var keychainQueryDictionary = String : Any

            if let tempSecCert = certificateRef {
                keychainQueryDictionary = [kSecClass as String : kSecClassCertificate, kSecValueRef as String : tempSecCert, kSecAttrLabel as String: "My Certificate"]
            }

            let summary =  SecCertificateCopySubjectSummary(certificateRef!)!  as String
            print("Cert summary: (summary)")

            let status = SecItemAdd(keychainQueryDictionary as CFDictionary, nil)`

This to import the certificate to keychain of the device. I want to verify if it is installed successfully.