无法将CA证书[crt]作为PrivateKeyEntry添加到JKS

Question

以下是我目前的JKS

bash-3.2$ keytool -list -keystore /web/myfolder/maincert.jks
Enter keystore password:

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 4 entries

root, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): 02:FA:F3:E2:91:43:54:68:60:78:57:69:4D:F5:E4:5B:68:85:18:68
maincert, Aug 1, 2017, PrivateKeyEntry,
Certificate fingerprint (SHA1): A0:BF:8A:61:D7:AE:82:A6:EE:4B:EB:E0:22:19:73:2E:FC:85:F8:AC
intermediate2, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): 70:60:8B:40:D0:B7:76:17:4A:4E:D8:54:16:58:27:70:B3:07:B9:05
intermediate1, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): EA:B0:40:68:9A:0D:80:5B:5D:6F:D6:54:FC:16:8C:FF:00:B7:8B:E3

然后我使用此命令删除了“maincert”

keytool -delete -alias maincert -keystore /web/myfolder/maincert.jks

然后我添加了CA签名的新证书[maincert.crt_2018]，其名称与旧的别名相同，如下所示：

keytool -import -file /web/myfolder/maincert.crt_2018 -alias maincert -keystore /web/myfolder/maincert.jks

但是，新证书现在显示为JKS中的可信条目，而不像以前那样显示为PrivateKeyEntry。请看下面：

bash-3.2$ keytool -list -keystore /web/myfolder/maincert.jks
Enter keystore password:

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 4 entries

root, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): 02:FA:F3:E2:91:43:54:68:60:78:57:69:4D:F5:E4:5B:68:85:18:68
maincert, Aug 28, 2018, trustedCertEntry,
Certificate fingerprint (SHA1): D2:7F:D0:86:79:0D:F3:06:66:C4:09:2E:29:A0:8F:8A:F3:E2:09:10
intermediate2, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): 70:60:8B:40:D0:B7:76:17:4A:4E:D8:54:16:58:27:70:B3:07:B9:05
intermediate1, Aug 1, 2017, trustedCertEntry,
Certificate fingerprint (SHA1): EA:B0:40:68:9A:0D:80:5B:5D:6F:D6:54:FC:16:8C:FF:00:B7:8B:E3

你能告诉我这里有什么问题吗？