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  1. #1
    Registered User
    Join Date
    Dec 2007

    Where can I get a free certificate for signing my Midlet, uses JSR 75 frequently


    I am developing a Midlet Suite with just 1 midlet in it. The midlet uses data in the phone's external memory card frequently. The data is stored in a text file. I preferred to store the data in a text file as its quite huge & often changed from a PC. So I have to use JSR 75 (FileConnection API).

    The problem is each time I try to access it in a real device I am prompted to allow/disallow access. The options "Ask First Time" & "Always Allowed" is disabled. This can be quite irritating as the access is frequent

    So I assume its because the midlet is untrusted, so the only way to enable the above 2 options of asking only once is to make it trusted. Thus I must obtain a certificate from one of the certificate authorities available in my phone.
    But from Nokia's documentation it seems that most CAs will charge for obtaining a certificate. Are there programs which make it possible for developer's to obtain certificates for free ? I do not want to buy a certificate as I am an indie developer & unsure how successful my app will be. Also I guess the free certificate must come from one of the CAs in my phone.

    Test Device Details:-
    Nokia 3110 Classic
    MIDP 2.0
    CLDC 1.1
    JSR 75 supported

    Bharti Airtel, India

    List of certificate authorities:-
    Baltimore Cyber Trust Root
    Equifax Secure Certificate
    GTE Cyber Trust Global Root
    Nokia Content Signing CA
    RSA Data Security Inc.
    RSA Security 1024 V3
    Thawte Consulting Pvt Ltd.
    Unified Testing Initiative
    Certification Services Division
    Class 3 Public Primary Certification Authority
    Verisign Trust Network

    I am thinking Nokia Content Signing CA or Unified Testing Initiative may have free programs but I am not sure.

    Also from FAQ:
    The Java Verified certificate is widely available on devices from all manufacturers. Your MIDlet will be signed with this certificate after it passes the Java Verified testing.

    But how come Java Verified certificate is not there in my Nokia phone ?

    Also is there any other way to stop prompting the user each time when the memory card is accessed using FileCOnnnection API (JSR 75)

    I saw an option for User Certificates in my phone but haven't the slightest clue how to use it.

  2. #2
    Nokia Developer Champion
    Join Date
    Nov 2007
    Rome, Italy

    Re: Where can I get a free certificate for signing my Midlet, uses JSR 75 frequently

    Unfortunately, only Motorola (but I've not checked recently) allows developer certificates to be generated and used for development purposes, and for limited periods. This is a great limit of J2me development, but it is

    About Java Verified, it's part of the Unified Testing Initiative (UTI), whose certificate is in your list.

    About the FileConnection prompts, their behaviour changes from phone to phone. For example, on some SonyEricsson phones, the prompt is given only the first time this API is used, and then it's never shown again.


  3. #3
    Registered User
    Join Date
    Jul 2009

    Red face Re: Where can I get a free certificate for signing my Midlet, uses JSR 75 frequently

    Please I get a free certificate . Please pay me guide .Thank you .

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