code: def read_encrypted_key_file(encrypted_key_path):
      with open(encrypted_key_path, "r") as file:
          original = file.readlines()
      return original[0]
  
imports: from caller import request_primary_key_cipher_text, request_data_key_cipher_text, request_data_key_plaintext
label_desc: Use image node_id 1 for calling a global function with example usage: read_encrypted_key_file(encrypted_key_path) and returns: original