I'm having trouble getting SHA1 certificate with keytool

java android certificate keystore keytool
Jeilson Araujo picture Jeilson Araujo · Oct 26, 2017 · Viewed 11k times · Source

I'm trying to find the SHA1 hash of my signature key store on macos sierra using the following comand:

keytool -exportcert -alias androiddebugkey -keystore $HOME/.android/debug.keystore -list -v -storepass android

The result looks like below:

Alias ​​name: androiddebugkey
Date of creation: Oct 25, 2017
Input Type: PrivateKeyEntry
Length of certificate chain: 1
Certificate [1]:
keytool error: java.util.IllegalFormatConversionException: d != java.lang.String java.util.IllegalFormatConversionException: d != java.lang.String at java.base/java.util.Formatter$FormatSpecifier.failConversion(Formatter.java:4331) at java.base/java.util.Formatter$FormatSpecifier.printInteger(Formatter.java:2846) at java.base/java.util.Formatter$FormatSpecifier.print(Formatter.java:2800) at java.base/java.util.Formatter.format(Formatter.java:2581) at java.base/java.util.Formatter.format(Formatter.java:2517) at java.base/java.lang.String.format(String.java:2747) at java.base/sun.security.tools.keytool.Main.withWeak(Main.java:3151) at java.base/sun.security.tools.keytool.Main.printX509Cert(Main.java:3182) at java.base/sun.security.tools.keytool.Main.doPrintEntry(Main.java:1995) at java.base/sun.security.tools.keytool.Main.doCommands(Main.java:1212) at java.base/sun.security.tools.keytool.Main.run(Main.java:397) at java.base/sun.security.tools.keytool.Main.main(Main.java:390)

As far as I can see the command is working, it is not a problem with the file nor with password, it seems to me an internal error in java, is it missing some java package? I am using Java SDK 9.0.1

Answer

gbaccetta picture gbaccetta · Nov 10, 2017

I found that the problem comes from latest version of Keytool in JDK8.151 and JDK9. By default keytool use system default language and that seems to do not properly work anymore on some languages (in my case French).

It was enough to force output in english by using the parameter -J-Duser.language=en

So try using this command line instead:

keytool -J-Duser.language=en -exportcert -alias androiddebugkey -keystore $HOME/.android/debug.keystore -list -v -storepass android

See also my answer here: https://stackoverflow.com/a/47181882/5292951

Related questions

Wrong version of keystore on android call

I want to make a https request. I use bouncycastle to generate the keystore like this : keytool -importcert -trustcacerts -alias ludevCA -file lu_dev_cert.crt -keypass mypass -keystore keystore.bks -storepass mypass -storetype BKS -providerclass org.bouncycastle.jce.provider.…

Read More
Certificate chain not found, but keystore contains private key

Im trying to sign my apk so I can release an update to my app with this command: jarsigner ­-verbose -sigalg SHA1withRSA -­digestalg SHA1 ­-keystore my­release-key.keystore CordovaApp­release­unsigned.apk alias_name but getting this error: …

Read More
What is the certificate enrollment process?

I am looking for a procedure of enrolling a certificate. I have searched a lot but didn't find a good answer. Till now I get that firstly I have to generate a Key store (For creating a public key and …

Read More