How to import a .cer certificate into a java keystore? -


during development of java webservice client ran problem. authentication webservice using client certificate, username , password. client certificate received company behind webservice in .cer format. when inspect file using text editor, has following contents:

-----begin certificate----- [some base64 encoded data] -----end certificate-----

i can import file certificate in internet explorer (without having enter password!) , use authenticate webservice.

i able import certificate keystore first stripping first , last line, converting unix newlines , running base64-decode. resulting file can imported keystore (using keytool command). when list entries in keystore, entry of type trustedcertentry. because of entry type (?) cannot use certificate authenticate webservice. i'm beginning think provided certificate public certificate being used authentication...

a workaround have found import certificate in ie , export .pfx file. file can loaded keystore , can used authenticate webservice. cannot expect clients perform these steps every time receive new certificate. load .cer file directly java. thoughts?

additional info: company behind webservice told me certificate should requested (using ie & website) pc , user import certificate later. maybe helps...

thanks in advance,

jan-pieter

  • if want authenticate need private key. there's no other option.
  • a certificate public key properties (like company name, country,...) signed certificate authority guarantees attached properties true.
  • .cer files certificates , don't have private key. private key provided .pfx keystore file normally. if authenticate because had imported private key.

  • you can import .cer certificates without problems 

    keytool -importcert -file certificate.cer -keystore keystore.jks -alias "alias"

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