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  1. #1
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    Need help- Secure voice Call- (Voice Call Encryption)

    Hi,
    I wanted to develop an application which secure the voice call between two device(Voice call encryption). Nokia people alreday developed a Secure Voice GSM software for all Symbian phones. Similarly Can we develop an application? If we dont mind i have one question. Have you any idea about how many man power and how many days are required to accomplish sush application? Please provide some information.

    Thanks,
    Girish_VMX

  2. #2
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Quote Originally Posted by girishvmx View Post
    Nokia people alreday developed a Secure Voice GSM software for all Symbian phones. ,
    What do you mean by that ?

  3. #3
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Hi Symbianyucca,

    Basically I wanted do Voice call encryption for Mobile phones. I am very new to this technology. So need some information about Is it really possible to do? If so what are the APIs we required Please provide some information.

    Thanks,
    Girish_VMX

  4. #4
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    haven't we already discussed this in: http://discussion.forum.nokia.com/fo...d.php?t=142716

  5. #5
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    You were interested in that a week ago already http://discussion.forum.nokia.com/fo...d.php?t=142716
    What have you tried so far?

  6. #6
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Yes you are right. We discussed about it. I downloaded that AES developer library and trying to encrpt the call I did not find anything to do Voice Call encryption. Using that library we can do message encrption and decryption. Please help me out.

    Thanks,
    Girish_VMX

  7. #7
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    You can't do regular voice call encryption/decryption using your own application developed using public SDKs. You can do a VoIP application on your own, and if the other party also has the same application, then you can send encrypted voice over a packet data connection (but that will not impact regular circuit switched voice calls).

  8. #8
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Hi,

    for this I think you need to read the packet data before sending to the network and capture the same on other device as well.

    I think you can also try some alternative way also if any in your mind.
    Use [URL="http://qt.nokia.com/products/qt-quick/"]Qt-Quick[/URL] to make your application UI more attractive.

    [URL="http://store.ovi.com/content/271896"]http://store.ovi.com/content/271896[/URL] | [URL="http://store.ovi.com/content/276199"]http://store.ovi.com/content/276199[/URL] |[URL="http://store.ovi.com/content/276202"] http://store.ovi.com/content/276202[/URL] | [URL="http://store.ovi.com/content/280827"]http://store.ovi.com/content/280827[/URL]

  9. #9
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Isn't a voice call analog data and you can't encrypt/decrypt analog data? Or am I mistaken.

    But if the call is going over IP then its digital and can be encrypted. If its going over IP then there is IPSec to authenticate and encrypt. Though you could do the encryption yourself using the Crypto libraries I guess.

    I think you have to fully understand exactly what the customer's requirements are before asking questions. Is this a regular voice call or going over IP?
    Last edited by AshramArzephucque; 2008-09-05 at 20:19.

  10. #10
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    In a GSM network, voice data is transferred in digitized form. However you can not really access and modify the binary stream of that.

  11. #11
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    Smile Re: Need help- Secure voice Call- (Voice Call Encryption)

    Quote Originally Posted by wizard_hu_ View Post
    In a GSM network, voice data is transferred in digitized form. However you can not really access and modify the binary stream of that.
    ok,
    if i make a program from it can i establish a data call by RTelserver,RPhone,RLine and RCall,
    and by RComm can i read and write to port
    Ahmed Mahfouz
    Researcher
    Handset

  12. #12
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    You can search for threads about data calls, Girishvmx also experimented with them as I remember. I am not sure if it was a success or not, but you can check.

  13. #13
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    Re: Need help- Secure voice Call- (Voice Call Encryption)

    Yes. You can write text data into port and read from it. I have tried to write a binary data into port and read it back but didn't work.
    Girish_VMX

  14. #14
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    Smile Re: Need help- Secure voice Call- (Voice Call Encryption)

    Quote Originally Posted by girishvmx View Post
    Yes. You can write text data into port and read from it. I have tried to write a binary data into port and read it back but didn't work.
    what do you do to encrypt the call?
    see:
    http://www.5pro-software.com/secure-voice.php
    where you arrive in this problem?
    Ahmed Mahfouz
    Researcher
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  15. #15
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    Question Re: Need help- Secure voice Call- (Voice Call Encryption)

    Quote Originally Posted by kkrish View Post
    Hi,

    for this I think you need to read the packet data before sending to the network and capture the same on other device as well.

    I think you can also try some alternative way also if any in your mind.
    how can read data befor sending to the network?
    Ahmed Mahfouz
    Researcher
    Handset

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