Java – Keytool generates SHA1 fingerprint instead of MD5

androidjavakeytoolmd5sha1

I want to use Google Maps in my application, I have followed this tutorial to generate MD5 fingerprint of my eventappkey.keystore. But keytool generates SHA1 fingerprint instead of MD5, due to which I am unable to register for Google Api as google accepts MD5 fingerprint of keystore.

Command line snapshop (Window 7)

I have looked at other answers which suggest to use jdk1.6. But is there a better way so that I do not need to move to jdk1.6. Any suggestion would be greatly appreciated.

Best Answer

If you add the -v (verbose) option to your command line, like

keytool -v -list -alias alias_name -keystore my-release-key.keystore

it should show you the MD5 fingerprint

Related Solutions

Java – Getting a File’s MD5 Checksum in Java

There's an input stream decorator, java.security.DigestInputStream, so that you can compute the digest while using the input stream as you normally would, instead of having to make an extra pass over the data.

MessageDigest md = MessageDigest.getInstance("MD5");
try (InputStream is = Files.newInputStream(Paths.get("file.txt"));
     DigestInputStream dis = new DigestInputStream(is, md)) 
{
  /* Read decorated stream (dis) to EOF as normal... */
}
byte[] digest = md.digest();

Java – How to generate an MD5 hash in Java

The MessageDigest class can provide you with an instance of the MD5 digest.

When working with strings and the crypto classes be sure to always specify the encoding you want the byte representation in. If you just use string.getBytes() it will use the platform default. (Not all platforms use the same defaults)

import java.security.*;

..

byte[] bytesOfMessage = yourString.getBytes("UTF-8");

MessageDigest md = MessageDigest.getInstance("MD5");
byte[] theMD5digest = md.digest(bytesOfMessage);

If you have a lot of data take a look at the .update(xxx) methods which can be called repeatedly. Then call .digest() to obtain the resulting hash.

Best Answer

Related Solutions

Java – Getting a File’s MD5 Checksum in Java

Java – How to generate an MD5 hash in Java

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