how to get hash of debug key for facebook auth

Type the following in the terminal, Window 7.

keytool -exportcert -alias androiddebugkey -keystore C:\Users\user
\.android\debug.keystore | C:\OpenSSL\bin\openssl sha -binary | C:\OpenSSL\bin\openssl base64 -out base64_2


Now a file has created in the default path of command(for example, C:\Users\user>). You can open the file to get hash key.