1. Remove "Signature:" from output. It is printing information about the certificates, not the signature.

2. When there is a warning for a certificate it would be useful to print out which Signer it applies to. For example, change:

"The certificate #3 of 3 uses the SHA1withRSA signature algorithm ..."

to:

"The certificate #3 of 3 of Signer #1 uses the SHA1withRSA signature algorithm ..."

3. In the main output, the certificate # should be printed out so you can more easily find which certificate the warning applies to, for ex:

Signer #1:
  
Certificate #1: