Hi All, Relatively new to this so bear with me. Problem statement - we generally use AWS Certificate Manager to handle all certs for our Route53 registered domain however we have a requirement to add an ECDSA certificate to an AWS load balancer to support one of the following ciphers in the TLS 1.2…

The error message makes it sound like you may have tried importing the fullchain.pem file when ACM was looking for just chain.pem. The docs indicate that the leaf cert, private key, and chain are all uploaded separately. Certificate and key format for importing - AWS Certificate Manager …

And, as for openssl verify, here's the best way to do that [image] How to verify LE cert using openssl? Help I…

Thanks so much for the quick reply! I have indeed tried importing fullchain! I have attempted to use just chain.pem for ACM, however it still fails the validation. Importing the certificate via iam with chain.pem however works. aws iam upload-server-certificate Will test it out and see if I can a…

[image] grantmaura: When attempting to import the certificate into ACM (or via IAM certificates), the certificate chain validation fails. Well, it should work, you just need to make sure that you have the key, leaf cert, and rest of the chain in the right fields. For what it's worth, here's …

Creating and Importing an ECDSA certificate to AWS Certificate Manager

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MikeMcQ November 1, 2022, 3:55pm 3

And, as for openssl verify, here's the best way to do that

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Creating and Importing an ECDSA certificate to AWS Certificate Manager

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