- If you want to authenticate you need the private key – there is no other option.
- A certificate is a public key with extra properties (like company name, country,…) that is signed by some Certificate authority that guarantees that the attached properties are true.
.CERfiles are certificates and don’t have the private key. The private key is provided with a
.PFX keystorefile normally.
If you really authenticate is because you already had imported the private key.
You normally can import
.CERcertificates without any problems with
keytool -importcert -file certificate.cer -keystore keystore.jks -alias "Alias"