Karlovskiy Alexey

During findSignature index of SignedInfo is changed, fixed this to ensure same index for inserted canonical SignedInfo as removed one.

crypto/x509/pkix: Name.String() rfc2253 AttributeTypes

10

### What version of Go are you using (`go version`)? 1.15.2 ### Does this issue reproduce with the latest release? Yes ### What operating system and processor architecture are you...