How to set read only with ntag424?

[woojae05]

I want make a read only tag using EncryptedFileSunCustomKeysActivity feature
could you share some code please?

[woojae05]

I want to change default key to custom key but when i changed FACTORY_KEY I got AES failed error
please let me know how to set custom key 🙏

public static byte[] FACTORY_KEY = new byte[]{
        (byte) 0x01, (byte) 0x23, (byte) 0x45, (byte) 0x67,
        (byte) 0x89, (byte) 0xAB, (byte) 0xCD, (byte) 0xEF,
        (byte) 0x10, (byte) 0x32, (byte) 0x54, (byte) 0x76,
        (byte) 0x98, (byte) 0xBA, (byte) 0xDC, (byte) 0xFE
    };

success = AESEncryptionMode.authenticateEV2(dnaC, ACCESS_KEY0, Ntag424.FACTORY_KEY);
                    if (success) {
                        writeToUiAppend(output, "AES 인증 성공");
                    } else {
                        // if the returnCode is '919d' = permission denied the tag is in LRP mode authentication
                        if (dnaC.getLastCommandResult().status2 == PERMISSION_DENIED) {
                            // try to run the LRP authentication
                            success = LRPEncryptionMode.authenticateLRP(dnaC, ACCESS_KEY0, Ntag424.FACTORY_KEY);
                            if (success) {
                                writeToUiAppend(output, "LRP 인증 성공");
                                isLrpAuthenticationMode = true;
                            } else {
                                writeToUiAppend(output, "LRP 인증 실패");
                                writeToUiAppend(output, "리턴 코드: " + Utils.byteToHex(dnaC.getLastCommandResult().status2));
                                writeToUiAppend(output, "인증 불가, 작업 중단");
                                return;
                            }

                        } else {
                            // any other error, print the error code and return
                            writeToUiAppend(output, "AES 인증 실패");
                            writeToUiAppend(output, "리턴 코드: " + Utils.byteToHex(dnaC.getLastCommandResult().status2));
                            return;
                        }
                    }