Download certification:
openssl s_client -showcerts -connect example.com:443 </dev/null 2>/dev/null|openssl x509 -outform PEM >certfile.pem
Convert PEM to DER:
openssl x509 -outform der -in certfile.pem -out certificate.der
import android.content.ContentResolver; | |
import android.content.ContentValues; | |
import android.os.Bundle; | |
import android.provider.CallLog; | |
import android.support.v7.app.AppCompatActivity; | |
import java.sql.Timestamp; | |
import java.util.Date; | |
import java.util.Random; |