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Created March 18, 2016 13:57
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Nissan Connect API encryption using Java
import android.util.Base64;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
public class NissanConnectEncryption {
public static String doEncrypt(String paramString)
String basePRM = "uyI5Dj9g8VCOFDnBRUbr3g";
return cipherEncrypt(paramString.getBytes(), basePRM);
private static String cipherEncrypt(byte[] paramArrayOfByte, String paramString)
Key key = new SecretKeySpec(paramString.getBytes(), "Blowfish");
Cipher localCipher = Cipher.getInstance("Blowfish/ECB/PKCS5Padding");
localCipher.init(1, key);
paramArrayOfByte = localCipher.doFinal(paramArrayOfByte);
return Base64.encodeToString(paramArrayOfByte, 0);
catch (Exception ex)
return null;
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francos commented Aug 30, 2018

Thanks for the code @gboudreau, it saved me a lot of time of try and error 👍

I used it to encrypt the user's password to call the Nissan login API. For anyone who is trying to use the same, paramString should be the password value when calling doEncrypt().

Also, a couple of clarifications of the ints in the code:

localCipher.init(1, key);

// You can use this call instead:
localCipher.init(ENCRYPT_MODE, key);
// 0 is DEFAULT
return Base64.encodeToString(paramArrayOfByte, 0);

// You can use this call instead:
return Base64.encodeToString(paramArrayOfByte, DEFAULT);

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