How to import aws elb cert from one account to another? - ssl-certificate

Question

I have two different accounts of aws so the cert present on elb in one account,i want the same cert for different account because we have same dns.
How can i import same cert to different account as well.
When i try to get that cert and upload that cert with cert chain ,cert and private key it says certificate not in pem format. So that means get-server-cert api doesn't return pem format,it it?
Any help would be really appreciated.
Thankyou

Answer 1

When you export a server certificate from IAM, not enough information is returned to allow you to use the certificate elsewhere.
This is by design. It is a security feature.
You need to find the original private key. While you're at it, you can just use the original cert and chain files.
$ aws iam get-server-certificate --server-certificate-name ExampleCertificate
When the preceding command is successful, it returns the certificate, the certificate chain (if one was uploaded), and metadata about the certificate.
Note
You cannot download or retrieve a private key from IAM after you upload it.
http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_server-certs.html#get-server-certificate
Assuming you are already ahead of me, here, and that you do have the original private key, you should be able to use the results from aws get-server-certificate for the cetificate and chain, because they should already be in PEM format, which looks like this:
-----BEGIN CERTIFICATE-----
...multiple lines of base64...
-----END CERTIFICATE-----
The certificate has exactly one such block, and the chain has one or more such blocks.
Your private key, in PEM format, looks similar, but has words other than CERTIFICATE in the boundary markers, such as RSA PRIVATE KEY.
Be sure the number of dashes on the left and right of each boundary marker is exactly 5.