Zack Brenton

@briansmith I believe you're correct; these are RSA keys, and looking at Vault's `keybase/go-crypto/rsa` dependency shows the [same issue](https://github.com/hashicorp/vault/blob/master/vendor/github.com/keybase/go-crypto/rsa/rsa.go#L209) as with the `crypto/rsa` package that has [already been called out](https://github.com/briansmith/ring/issues/220#issuecomment-313620633)...

I had similar issues after upgrading our cluster from `1.16.x` to `1.17.x` (specifically https://github.com/uswitch/kiam/issues/378). Using `host-gw` is not an option for me as our cluster runs on AWS, but I...