keytool import certificate java.util.IllegalFormatConversionException in linux

Question

I am tring to create a keystore to be used in tomcat but I get the error "java.util.IllegalFormatConversionException: d != java.lang.String" using keytool. This happens only in linux (centos7) but not in windows. I created the keystore with

keytool -genkey -keyalg RSA -alias client -keystore testkeystore -storepass mypassword  -validity 3650

and tried to import the certificate with

keytool -import -alias  arubaauth  -trustcacerts -keystore testkeystore -file root_autenticazione_ATe.cer

The same commands and the same certificate do not show any error in windows.

What is wrong?

Thanks in advance

Check my updated answer. That solved the problem in my case. — gbaccetta
– gbaccetta, Commented Nov 10, 2017 at 17:57

gbaccetta · Accepted Answer · 2017-11-10 17:52:01Z

66

I think the problem comes from the Keytool version included in Java 8.151 and Java 9. Older versions are working correctly for me. Try downgrading your JDK environement

EDIT: further investigation make me realize the problem on last java versions occurs only for some languages. Hence it is enough to force the output language of keytool in english to solve the problem by adding the parameter -J-Duser.language=en.

Probably the tomcat default language is different than english. try running this command:

keytool -J-Duser.language=en -import -alias  arubaauth  -trustcacerts -keystore testkeystore -file root_autenticazione_ATe.cer

edited Nov 10, 2017 at 17:52

answered Nov 8, 2017 at 14:10

gbaccetta

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2 Comments

Dimas Mendes Over a year ago

You saved my day! my problem was with the language, I'm using Java 8 and when I forced english the SHA1 key was printed out normally.

lgeorget Over a year ago

Indeed, I think the problem is the presence of non-ASCII character in the output.

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