Convert .cer certificate to .jks

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伪装坚强ぢ
伪装坚强ぢ 2021-01-31 08:43

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

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  • 2021-01-31 08:52

    Use the following will help

    keytool -import -v -trustcacerts -alias keyAlias -file server.cer -keystore cacerts.jks -keypass changeit

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  • 2021-01-31 09:05

    Export a certificate from a keystore:

    keytool -export -alias mydomain -file mydomain.crt -keystore keystore.jks
    
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  • 2021-01-31 09:14

    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).

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  • 2021-01-31 09:19

    keytool comes with the JDK installation (in the bin folder):

    keytool -importcert -file "your.cer" -keystore your.jks -alias "<anything>"
    

    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.

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