前段时间将本站的 SSL 证书改为 AlphaSSL 的泛域名证书，今天突然发现用 chrome 访问会报err_cert_authority_invalid错误，网上找了一下，解决办法就是，粘贴下面的证书放在crt 文件的后面。
代码语言：javascript复制-----BEGIN CERTIFICATE-----
MIIETTCCAzWgAwIBAgILBAAAAAABRE7wNjEwDQYJKoZIhvcNAQELBQAwVzELMAkG
A1UEBhMCQkUxGTAXBgNVBAoTEEdsb2JhbFNpZ24gbnYtc2ExEDAOBgNVBAsTB1Jv
b3QgQ0ExGzAZBgNVBAMTEkdsb2JhbFNpZ24gUm9vdCBDQTAeFw0xNDAyMjAxMDAw
MDBaFw0yNDAyMjAxMDAwMDBaMEwxCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9i
YWxTaWduIG52LXNhMSIwIAYDVQQDExlBbHBoYVNTTCBDQSAtIFNIQTI1NiAtIEcy
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2gHs5OxzYPt j2q3xhfj
kmQy1KwA2aIPue3ua4qGypJn2XTXXUcCPI9A1p5tFM3D2ik5pw8FCmiiZhoexLKL
dljlq10dj0CzOYvvHoN9ItDjqQAu7FPPYhmFRChMwCfLew7sEGQAEKQFzKByvkFs
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cJjI4e00X9icxw3A1iNZRfz VXqG7pRgIvGu0eZVRvaZxRsIdF ssGSEj4k4HKGn
kCFPAm694GFn1PhChw8K98kEbSqpL 9Cpd/do1PbmB6B Zpye1reTz5/olig4het
ZwIDAQABo4IBIzCCAR8wDgYDVR0PAQH/BAQDAgEGMBIGA1UdEwEB/wQIMAYBAf8C
AQAwHQYDVR0OBBYEFPXN1TwIUPlqTzq3l9pWg Zp0mj3MEUGA1UdIAQ MDwwOgYE
VR0gADAyMDAGCCsGAQUFBwIBFiRodHRwczovL3d3dy5hbHBoYXNzbC5jb20vcmVw
b3NpdG9yeS8wMwYDVR0fBCwwKjAooCagJIYiaHR0cDovL2NybC5nbG9iYWxzaWdu
Lm5ldC9yb290LmNybDA9BggrBgEFBQcBAQQxMC8wLQYIKwYBBQUHMAGGIWh0dHA6
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yolQL30EzTSo//z9SzANBgkqhkiG9w0BAQsFAAOCAQEAYEBoFkfnFo3bXKFWKsv0
XJuwHqJL9csCP/gLofKnQtS3TOvjZoDzJUN4LhsXVgdSGMvRqOzm 3M pGKMgLTS
xRJzo9P6Aji Yz2EuJnB8br3n8NA0VgYU8Fi3a8YQn80TsVD1XGwMADH45CuP1eG
l87qDBKOInDjZqdUfy4oy9RU0LMeYmcI Sfhy NmuCQbiWqJRGXy2UzSWByMTsCV
odTvZy84IOgu/5ZR8LrYPZJwR2UcnnNytGAMXOLRc3bgr07i5TelRS KIz6HxzDm
MTh89N1SyvNTBCVXVmaU6Avu5gMUTu79bZRknl7OedSyps9AsUSoPocZXun4IRZZ
Uw==
-----END CERTIFICATE-----如果后续再出现类似的情况的话，可以在https://www.alphassl.com/support/install-root-certificate.html查看最新的中间证书。
What are Intermediate CA certificates? All customers installing an AlphaSSL Certificate will need to install the Alpha CA Intermediate CA onto their web servers. The installation needs to only be conducted once. Once installed, all browsers, applications and mobiles will trust AlphaSSL Certificates transparently. The Intermediate CA certificate needs only be installed on the web server and does NOT need to be installed by visitors to your web site.
Why does AlphaSSL use an Intermediate CA certificate? AlphaSSL has always adopted a high security model when issuing digital certificates. We use a trust chain that ensures that the primary root CA used to create the Alpha CA Intermediate CA (i.e. the GlobalSign Root CA certificate that is pre-installed with all browsers, applications and mobiles) is “offline” and kept in a highly secure environment with stringently limited access. This means the root CA is not used to directly sign end entity SSL Certificates, as such AlphaSSL employs a best practices approach for it Public Key Infrastructure therefore protecting against the major effects of a “key compromise”. For example, a key compromise of the primary Root CA would render the root and all certificates issued by the root untrustworthy, and because we keep our root offline this (somewhat unlikely event) is significantly less likely to happen.
The use of Intermediate CAs is utilized by all major Certification Authorities because of the extra security level they provide.
