我有一个包含这4个文件的证书，我想将这个证书导入到aws，首先我使用以下命令转换密钥
openssl rsa -in FILENAME.key -out FILENAME.key.rsa
然后我将cer文件的内容和密钥复制到aws但它显示了这个错误
Provided certificate is not a valid self signed. Please provide either a valid self-signed certificate or certificate chain.
通过添加这个(p7b文件)解决
-----BEGIN CERTIFICATE-----
[certificate chain data]
-----END CERTIFICATE----
和
openssl pkcs7 -in cert.p7b -print_certs -out out.certs