title: Why are there so many iMessage Signing Keys in the private key section of Keychain?
body: <p><img src="https://i.stack.imgur.com/FFmIk.png" alt="this is the iMessage Signing Key"></p>
  
  <p>I tried to clean my keychain because there are many certificates in it.
  When I opened the private key section, I found there are too many of the same key.</p>
  
  <p>Can I delete them? I don't know what they are for. Help me please!</p>