android - Find the key hash for a signed app

Question

I have signed my app and exported it to a folder on my desktop called app in this folder is my app itself and the keystore. How do i find the key hash that i can copy into the facebook developers page. i have openssl installed but cant seem to generate the key hash ive tried many other threads on stack and none have seemed to help, thanks

James

Answer 1

1. You should know where is your keystore file. For me is C:UsersSelvinDesktopselvin.kp
2. You should know your alias in keystore. For me is selvin
3. You should know path to keytool. C:Program FilesJavajdk1.6.0_22inkeytool.exe
4. You should know path to openssl. C:OpenSSL-Win32inopenssl.exe
5. You should know password to keystore. For me is ***** hehe

Then, you should call:

C:Program FilesJavajdk1.6.0_22inkeytool.exe" -exportcert -alias selvin -keystore c:usersselvindesktopselvin.kp | C:OpenSSL-Win32inopenssl sha1 -binary | C:OpenSSL-Win32inopenssl base64

Replace my path and alias with proper ones.

Then you should see:

Enter keystore password:

Enter your password and you should get something like this: NfhDlIH7XWJzUZRjL+pZySrMX1Q=

EDITED: NfgDlIG7XWJzUZRUL+bZySrMX1Q= <- is a bad hash. Or you got so lucky that your key made the same collision as

error:keytool error: java.lang.Exception: Alias does not exist

If hash not working:

First, call

C:Program FilesJavajdk1.6.0_22inkeytool.exe" -exportcert -alias selvin -keystore c:usersselvindesktopselvin.kp

Type password and read the error

If you don't remember your alias keytool error: java.lang.Exception: Alias <selvinn> does not exist I used selvinn to show error.

For a list of all your entries/aliases:

C:Program FilesJavajdk1.6.0_22inkeytool.exe -list -keystore c:usersselvindesktopselvin.kp

second edit