title: What is the meaning of the keystore validity in Android?
body: <p>Can be a sign to the expiration keystore, install are also available.</p>
  
  <p>ex) 1 day keystore generate.</p>
  
  <pre><code>$ keytool -genkey -v -keystore my-release-key.keystore
  -alias alias_name -keyalg RSA -keysize 2048 -validity 1
  </code></pre>
  
  <p>ex) my-release-key.keystore already is expired.</p>
  
  <pre><code>$ jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1
  -keystore my-release-key.keystore my_application.apk alias_name
  </code></pre>
  
  <p>App launch is also available. So, What is the meaning of the keystore validity in Android?</p>