Autheticate with .crt and .key File to a REST endpoint (Groovy/Scriptrunner)

[siteadmin]

Hello,

im trying to create a custom Field that uses Data it receives from a REST endpoint. For authentication there is .crt and .key File. How can use Files to authenticate to Rest endpoint via groovy? I have a working python code that looks like that:

def get_attributes(gid, crt_file, key_file, scd_url):
    headers = {"accept": "application/json"}
    response = requests.get(
        f"https://{url}", cert=(crt_file, key_file), headers=headers
    )
    if response.status_code != 200:
        return (False, response.status_code)
    else:
        return (True, response.json())

 I also have a Java code to access the rest endpoint via Truststore and Keystroke: 

System.setProperty("javax.net.ssl.trustStore", "C:\\{cert path}"); 
  
System.setProperty("javax.net.ssl.keyStore", "C:\\{filename}.jks"); 
System.setProperty("javax.net.ssl.keyStorePassword", 
"<your secret password for the jks certificate>"); 
try { 
URL obj = new URL("{Url}"); 
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection(); 
if (con == null) { 
System.out.println("connection cannot be established!"); 
} 

Is there a way to access these files via ScripRunner to create a custom Field?

Thanks for any help.