# File mime/types.rb, line 302
302:         def signature?
303:             case @content_type
304:                 when "application/pgp-keys", "application/pgp",
305:                      "application/pgp-signature", "application/pkcs10",
306:                      "application/pkcs7-mime", "application/pkcs7-signature",
307:                      "text/vCard", "text/vcard"
308:                     true
309:             end
310:         end