package lv.odylab.evemanage.security;
import com.google.inject.Provider;
import lv.odylab.appengine.repackaged.Base64;
import lv.odylab.evemanage.application.exception.EveManageSecurityException;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
public class PrivateKeyProvider implements Provider<PrivateKey> {
private final PrivateKey privateKey;
public PrivateKeyProvider() {
try {
privateKey = readPrivateKeyFromFile("/private.key");
} catch (IOException e) {
throw new EveManageSecurityException(e);
}
}
@Override
public PrivateKey get() {
return privateKey;
}
private PrivateKey readPrivateKeyFromFile(String fileName) throws IOException {
InputStream base64InputStream = new Base64.InputStream(getClass().getResourceAsStream(fileName));
byte[] data = new byte[base64InputStream.available()];
base64InputStream.read(data);
PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(data);
try {
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
return keyFactory.generatePrivate(privateKeySpec);
} catch (NoSuchAlgorithmException e) {
throw new EveManageSecurityException(e);
} catch (InvalidKeySpecException e) {
throw new EveManageSecurityException(e);
}
}
}