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package jp.kogane.dev.prv.securitytester;
import android.content.Context;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.GeneralSecurityException;
package jp.kogane.dev.prv.keystoretester;
import android.content.Context;
import android.security.KeyPairGeneratorSpec;
import android.support.annotation.NonNull;
import java.io.IOException;
import java.math.BigInteger;
import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;