Convert cer certificate to jks

Question

I need to convert a  cer file to a  jks file  I saw a few questions about it  but haven t seen a solution to what I need   I don t need it in order to add it to my local certificates  but as a file to upload to a server  I also need to do it only once  and not programmatically  There s this thread Converting  cer to  jks using java and the author says he had done it successfully  but I couldn t comment to his last reply as I don t have enough reputation  nor could I send him a personal message and ask him   So if anyone knows of a simple way to do so  I ll be glad to hear

User · Answer

Use the following will help  keytool -import -v -trustcacerts -alias keyAlias  -file server cer -keystore cacerts jks  -keypass changeit

User · Answer

Export a certificate from a keystore   keytool -export -alias mydomain -file mydomain crt -keystore keystore jks

User · Answer

keytool comes with the JDK installation  in the bin folder    keytool -importcert -file  your cer  -keystore your jks -alias   lt anything gt     This will create a new keystore and add just your certificate to it   So  you can t convert a certificate to a keystore  you add a certificate to a keystore

User · Answer

Just to be sure that this is really the  conversion  you need  please note that jks files are keystores  a file format used to store more than one  certificate and allows you to retrieve them programmatically using the Java security API  it s not a one-to-one conversion between equivalent formats   So  if you just want to import that certificate in a new ad-hoc keystore you can do it with Keystore Explorer  a graphical tool  You ll be able to modify the keystore and the certificates contained therein like you would have done with the java terminal utilities like keytool  but in a more accessible way

[java] Convert .cer certificate to .jks

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