My command to to create android keystore

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c:\Program Files\Java\jdk1.6.0_27\bin\keytool -genkey -v -keystore android.keystore -alias android_keystore  -keyalg RSA -keysize 2048 -validity 10000

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Signature for Facebook

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keytool -exportcert -alias android_keystore -keystore android.keystore | openssl sha1 -binary | openssl base64

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