java - How to get distinguished names from certificate using private key? -

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my android app receive (by aidl) user certificate , private key. how can distinguished name certificate?

the app sends certificate , private key can have these names keystore initialized form *.pfx file , using password this:

keystore keystore = keystore.getinstance("pkcs12"); keystore.load(in, getpassword().tochararray());

and using alias: 

enumeration enumeration = clientkeystore.aliases(); while (enumeration.hasmoreelements()) {      string currentalias = (string) enumeration.nextelement();      ..      .. }

i can distinguished names

 x509certificate c = (x509certificate) keystore.getcertificate(currentalias);  principal subject = c.getsubjectdn();  string subjectarray[] = subject.tostring().split(",");  (string s : subjectarray) {      string[] str = s.trim().split("=");      string key = str[0];      string value = str[1];      log.d(tag, key + " - " + value);  }

i cannot pass more information app certificate , private key. how can reach same in app without password using cert , private key?


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