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SecureGSM™ Pro User Guide

SecureGSM™ Pro User Guide

 Welcome
 About SecureGSM™ Pro
 About SecureGSM™ Pro Evaluation
Functional Requirements
 System Requirements
 Known Device Compatibility Issues
 Carrier Requirements
 Notes on carriers and providers
 Reducing Echo
Program Activation
 Program Activation
Configuration
 Settings
 Advanced Audio Control
Program Operation
 The Program Status Indicator
 Tools Menu
 SecureGSM™ Pro Status Bar
 SecureGSM™ Pro Dial Screen
 Initiating a SecureGSM™ Pro Call
 Party Verification
 SecureGSM™ Pro Messaging Screen
 Accessing Contacts from SecureGSM™ Pro
 Dialing from Contacts
Program Messages
 Error Messages
 Status Messages
Security precautions and Best Practices
 Security precautions and Best Practices


Welcome

 
 
SecureGSM™ Pro
 
Thank you for your your purchase of SecureGSM™ Pro.
 
We are confident that you will appreciate the unique features and security offered by this product to protect your confidential communications.
 
For more information about SecureGSM and available products, please visit http://www.securegsm.com

Contents  Index
About SecureGSM™ Pro
 
SecureGSM™ Pro is a no-compromise secure voice and messaging application which ensures complete protection against eavesdropping and interception of your conversation and messaging. When using SecureGSM™ Pro, your voice and messaging is encrypted to Military Grade Standards.
 
SecureGSM™ Pro uses your carriers CSD (Circuit Switched Data) facility. You should check with your provider that the service is enabled on your phone plan. More information is in the carrier requirements section.
 
For more information please visit http://www.securegsm.com

Contents  Index
About SecureGSM™ Pro Evaluation
 
The SecureGSM™ Pro Evaluation application is fully functional software with no time limits, however, there are some differences between the SecureGSM™ Pro Evaluation and SecureGSM™ Pro applications which are as follows:
 
Low encryption 
The encryption offered in SecureGSM™ Pro Evaluation will be a single cipher with substantially lower strength and easy to decrypt.
 
Absence of Diffie-Hellman public key infrastructure. 
Private keys will be hard-coded into SecureGSM™ Pro Evaluation, thus the public key infrastructure will not be present. 
 
Private Keys will be published to provide an easy way to decipher a pre-recorded stream of SecureGSM™ Pro Evaluation.
 
Apart from the limited security, SecureGSM™ Pro Evaluation is a fully functioning software with exactly the same core engines as SecureGSM™ Pro. Upon purchase of SecureGSM™ Pro, you will not notice any difference in functionality or audio quality.
 
Please note, that SecureGSM™ Pro Evaluation and SecureGSM™ Pro are not compatible to each other, due to the differences in security implementations.
 
Using SecureGSM™ Pro Evaluation, we encourage you to test, among other things:
  • Compatibility with your device.
  • Compatibility with your device settings.
  • Compatibility with your service provider's network
  • Ensure you are satisfied with the voice quality
  • Ensure you are satisfied with the functionality of the SecureGSM™ application
 
Please note that you are free to use SecureGSM™ Pro Evaluation for as long as you like*, however be aware that SecureGSM™ Pro Evaluation does not provide any substantial level of protection.

*Subject to the End User Licence Agreement (EULA), which is published on the SecureGSM™ Website.

Contents  Index
System Requirements

Please visit the SecureGSM Web site for a list of compatible devices.

The following are minimum systems requirements which should be met for correct operation.

Operating System:
Windows Mobile Phone Edition 2003, Windows Mobile Phone Edition 2003SE, Windows Mobile Phone Edition 5.0
 
Processor:
ARM or compatible, 200MHz or better
 
Memory
Minimum 6Mb of RAM available
 
Storage
Minimum 2Mb of space available
 
CSD Line: 
9600bps or better 
 
Microsoft ActiveSync: 3.7+

Contents  Index
Known Device Compatibility Issues
 
Some devices are known to be incompatible with our software due to incorrect implementation of some TAPI commands in device ROM.
 
eg. O2 XDAII with ROM revision prior to 1.72
  
Please visit the SecureGSM Web site for a list of compatible devices.

Contents  Index
Carrier Requirements
 
SecureGSM™ Pro uses your carriers DATA CALL (CSD) line functionality. To use this service you will need to ask your service provider to enable it for you. Your provider will also give you a DATA TERMINATING NUMBER to make and receive DATA CALLS.
 
Note: The DATA CALL service must be enabled on both ends for SecureGSM™ Pro to function.
 
CSD Line Type settings:
Several CSD Line Type settings will be available to you, depending on the device you are using.
 
SecureGSM™ Pro can operate using either the v.110 or v.32 CSD Line Type Data rate setting.
 
We recommend using the v.110 setting when calling to other mobile handsets. Using the v.110 setting ensures that the connection time between handsets is established as quickly as possible, as well as providing a better successful call connection ratio.
 
When calling to SecureGSM™ DT* landline client, a v.32 setting must be used, as the PSTN network does not support the v.110 connection type.
 
On first launch, SecureGSM™ Pro will set the Line Type Data rate setting on your device to v.110.
 
You can change from v.110 to v.32 in the CSD tab of the SecureGSM™ Pro Settings.
 
Note: Some carrier's internal settings prevent the correct operation of v.110. If you experience difficulties with connection, you should switch to v.32. When using v.32 you should expect an increase in the time your device takes to connect (modem handshake) which can be up to 20 seconds before the key exchange procedure begins.
 
You will also need to ensure your connection element is set to Non-transparent. On first launch, SecureGSM™ Pro will enable this setting for you.
 
Note: A device Power Cycle is required when changing from v.110 to v.32 for the new settings to become effective on your device.
 
*Currently in development.

Contents  Index
Notes on carriers and providers
 
Because it is not possible for us to test absolutely all carrier connections and combinations on a global scale, we recommend that you test your intended environment with SecureGSM™ Pro Evaluation prior to purchase.

Contents  Index

Reducing Echo
 
Under some conditions users may experience echo while using SecureGSM™ Pro, which are related to the incorrect level settings of microphone sensitivity and speaker volume during a SecureGSM call.
 
It is important to understand that any echo you hear will be primarily the result of the settings of your called/calling party’s device. Therefore, it is important that all users of SecureGSM™ Pro optimise settings for their device in particular.
 
When the microphone sensitivity and/or the speaker volume are at excessively high levels (and/or combination of the two) the SecureGSM™ Pro application may experience difficulties providing effective echo suppression due to being outside its operating range.
 
Below are some recommendations for particular devices which we have found to need such adjustments. If your device is not on the list, or you still find unacceptable echo, please follow the General instructions on how to optimise settings for your device below.
 
The following default settings will be assigned on a per-device basis upon installation:
 
HTC Himalaya:
I-mate Pocket PC, O2 XDA II, Qtek 2020, MDA I, Dopod 696, etc.
 
In call microphone sensitivity: +10
In call speaker volume: +4

 
HTC Alpine, HTC Blue Angel, HTC Magician:
I-mate PDA2K, I-mate JAM, O2 XDA IIs, O2 XDA IIi, MDA III, O2 XDA II MINI, MDA COMPACT, QTEK S100, etc.
 
In call microphone sensitivity: 0
In call speaker volume: +4
 
Note: These settings are only used during a SecureGSM™ call and are restored to default system levels when SecureGSM™ Pro is in idle (Ready…) or off.
 
The default installation settings apply if you have not modified them manually or if the “Restore Default” button is applied.  
 
Please note: If the “Use System Setting” option is enabled, then the echo suppression mechanism will be deactivated and may lead to unacceptable levels of echo.
 
We suggest keeping the “In call microphone sensitivity” setting un-modified unless you have an important reason to do so.
 
We have found that the default settings which are applied upon installation to be optimal for the majority of users. Please do not increase microphone sensitivity settings above the recommended default level, as this may cause drastically increased echo for your called/calling party. Generally speaking, it is much better for the other party to increase the “In call speaker volume” setting, rather than increasing the microphone sensitivity on your device.
 
The “In call microphone sensitivity” and “In call speaker volume” settings can be adjusted in real time during a SecureGSM™ call, if you find that an adjustment is needed, using the Advanced Audio Control.
 
Device Volume control slider
 
The Volume control slider on your device is always active during a SecureGSM™ call. Use this volume control at any time during a call to temporarily increase or decrease the speaker volume.
   
Unlike the Advanced Audio Control, this works as a temporary volume setting and is not memorised for future SecureGSM™ communications.
   
Essentially, the Advanced Audio Control “In call speaker volume” sets an optimal starting point for all SecureGSM™ communications, and any temporary volume adjustments you need to do during a call can be made using the device Volume control.
 
Note: If you find that you need to adjust the speaker volume for the majority of your SecureGSM™ calls, then you should adjust the “In call speaker volume” setting either using the Advanced Audio Control screen, or by using the SecureGSM™ Pro Settings so as to memorise your optimal “In call speaker volume” for all SecureGSM™ calls, as per the General instructions on how to optimise settings for your device.
 
The Advanced Audio Control “In call speaker volume” is capable of making much finer adjustments to your “in call” speaker volume and should be used to set your optimum operating level.
 
General instructions on how to optimise settings for your device.
(Usually required upon first use only)
 
If you are experiencing excessive levels of echo, then the device of the other party (your called/calling party) requires adjustment.
 
You should ask the other party to:
 
     1. Open the Advanced Audio Control screen and decrease the “In call microphone sensitivity” (mic) by five (5) increments.
 
If this does not solve the issue,
 
     2. Adjust their “In call speaker volume” (vol) to the minimum level of comfort.
 
This should eliminate any problems with echo. If you are still experiencing echo then,
 
     3. Ask the other party to further decrease the “In call microphone sensitivity” a further three (3) to five (5) increments.
 
     4. Ask the other party if they are experiencing echo, if they are, then you should repeat steps 1 -3 above on your device. That is, you should now open the Advanced Audio Control on your device and decrease the “In call microphone sensitivity” (mic) and then adjust “In call speaker volume” (vol) to a comfortable minimum level.
 
Once these procedures have been followed, press “ok” to close the Advanced Audio Control screen.
 
Note: The changes which you make in the Advanced Audio Control are memorised for all future “in call” communications. It is recommended to keep these settings from that point on. If you find you need to further fine tune the settings, please follow the above instructions, and adjust the settings in smaller increments.
 
In the majority of cases decreasing “In call microphone sensitivity” 5-10 units down will improve and likely completely eliminate any echo effects. Please remember that keeping your microphone sensitivity level down at any time is a good idea to make conversations pleasurable for both yourself and other parties while in a SecureGSM™ call.
 
Also, please note that Advanced Audio Control is enabled for the majority of HTC manufactured devices and some others. Some non-HTC manufactured devices may be found incompatible with SecureGSM™ Advanced Audio Control and therefore microphone sensitivity controls will be automatically disabled. SecureGSM will be looking at providing broader compatibility for devices currently unsupported by Advanced Audio Control in upcoming versions of SecureGSM™ software.
 
Contents  Index

Program Activation
 
SecureGSM™ Pro must be activated (licensed) per unique device. Instructions on how to activate SecureGSM™ Pro for your device are contained in the "HOW _TO_ACTIVATE.TXT" file supplied with your SecureGSM™ Pro application.

Please follow the instructions in this file to activate your software.
 

Settings
 
To access SecureGSM™ Pro application settings, tap the Tools menu and choose "Settings"
 
The Settings dialog has five tabs which enable you to set your preferences. Tap the associated tab to access each section of the Settings dialog.
 
Ring
 
The ring settings allow you to choose a distinctive tone alert for your SecureGSM™ incoming calls. Tap on the drop down list to choose an alert tone. Tap the Play icon to preview your chosen ring tone. Tap the Stop Icon to stop the preview.
 
The Volume slider allows you to set the volume of the tone alert. To adjust the volume, tap-and-drag the volume slider.

SecureGSM™ Pro reads .wma and .wav files from the Windows folder on your device.
 
Microphone
 
The microphone tab allows you to optimize and fine tune the microphone settings on your device for optimal operation with SecureGSM™ Pro.
 
In call microphone sensitivity
 
The sensitivity slider allows manual control over your microphone. This is the preferred method for optimizing your microphone setting. The settings made here are reflected in the Advanced Audio Control and vise-versa.
 
Upon intstallation, the default settings are applied depending on your device.
 
Note: Having the Sensitivity too high may cause degradation in voice quality and introduce artifacts such as spurious echo due to speaker/microphone feedback. The Sensitivity setting within SecureGSM™ Pro is specifically designed to minimize such issues.
 
Restore Default
 
Tap the “Restore Default” button to reset your changes to SecureGSM™ Pro defaults.
 
Volume
 
The volume tab allows you to optimize and fine tune the volume settings on your device for optimal operation with SecureGSM™ Pro.
 
In call speaker volume
 
The "In call speaker volume" setting allows you to set the optimal level of the speaker volume during a SecureGSM™ call with much higher precision than the standard volume control slider. This setting is applied during a SecureGSM™ call only and does not affect other applications while SecureGSM™ Pro is in idle (Ready.. ) state.
 
The settings made here are reflected in the Advanced Audio Control and vise-versa.
 
Upon intstallation, the default settings are applied depending on your device.
 
Restore Default
 
Tap the “Restore Default” button to reset your changes to SecureGSM™ Pro defaults.
 
Contacts
 
This setting allows you to enable dialing from your Contacts manager. This setting is off by default. Tap the check box to enable. To learn how to use this feature, please see the Dialing from Contacts item under the Program Operation Heading.
 

Note: Using this feature may allow records of your calls to be stored in the operating system's logs. For optimum security, we recommend leaving this feature off. 

Startup

This setting allows you to enable automatic startup of the SecureGSM™ Pro application. This will ensure that you do not miss any SecureGSM™ calls after a Soft Reset of your device.

This setting is disabled by default. Tap the checkbox to enable.

CSD

This tab allows you to set the Line Type Data rate setting on your device.

When you have adjusted all settings, tap “ok” to return to the SecureGSM™ Pro application.

Contents  Index

Advanced Audio Control
 
 
 
The Advanced Audio Control screen provides easy access to the Audio settings for SecureGSM™ Pro in one convenient screen and allows you to optimise your "in call" settings for SecureGSM™ Pro.
 
Advanced Audio Control can be accessed in two distinct ways.
  1. Tap on the “Advanced Audio Control” icon in the taskbar.
  2. Press-and-hold the grey “backspace” key in the SecureGSM™ Pro Dial screen.

All changes you make using Advanced Audio Control are live and effective immediately and correspond to values in the “Microphone” and “Volume” tabs in SecureGSM™ Pro Settings.
 
Use the up/down buttons for the “In call microphone sensitivity” (mic) and “In call speaker volume” (vol) to make adjustments as per the recommendations for Reducing Echo.
 
Note: If the “Use System Setting” option is enabled under Microphone settings, the microphone sensitivity controls will be disabled (greyed out).

At the bottom left of your screen, a readout for the current settings are shown.
 
Please note that Advanced Audio Control is enabled for the majority of HTC manufactured devices and some others. Some non-HTC manufactured devices may be found incompatible with SecureGSM™ Advanced Audio Control and therefore microphone sensitivity controls will be automatically disabled. SecureGSM will be looking at providing broader compatibility for devices currently unsupported by Advanced Audio Control in upcoming versions of SecureGSM™ software.

Contents  Index
The Program Status Indicator
 
 
 
The Program Status Indicator is displayed on the Today screen taskbar. Tap the Status Indicator to restore the application at any time.
 
To temporarily prevent SecureGSM™ Pro from answering incoming calls, tap-and-hold the Program Status Indicator to display the options menu and choose "Disable". The Program Status Indicator will change to display a red cross to indicate that the SecureGSM™ Pro application is disabled.
 
This feature is included in cases where you may want to receive fax or data calls unrelated to SecureGSM™ Pro.
 
To enable the SecureGSM™ Pro application, tap-and-hold the Program Status Indicator to display the options menu and choose "Enable".
 
You can also enable or disable the SecureGSM™ Pro application in the Tools Menu.
 
Note: This feature does not in any way affect the standard phone application which your device uses to make standard calls.

Contents  Index
Tools Menu
 
Tap the Tools Menu to display the following:
 
Enable/Disable
 
Tap to enable or disable the SecureGSM™ Pro application. An indicator appears next to the currently selected mode.
 
This feature is included in cases where you may want to receive fax or data calls unrelated to SecureGSM™ Pro.
 
You can also enable or disable the SecureGSM™ Pro application from the Program Status Indicator.
 
Note: This feature does not in any way affect the standard phone application which your device uses to make standard calls.
 
Settings
 
Tap the Settings menu item to configure SecureGSM™ Pro Settings.
 
About
 
Tap to display information about the SecureGSM™ Pro application.
 
Exit
 
Tap to gracefully shut down the SecureGSM™ Pro application.

Contents  Index

SecureGSM™ Pro Status Bar
 
 
The SecureGSM™ Pro Status Bar displays all relevant information regarding your call connection, status of encryption, and status of the SecureGSM™ Pro application.
 
For a list of displayed Status Messages see the section Status Messages.

Contents  Index

SecureGSM™ Pro Dial Screen
 
 To access the Dial Screen at any time, tap the phone icon at the bottom of the SecureGSM™ Pro application screen.
 
The dial screen is presented with large, easy to press buttons for entry of your outgoing phone number, dial and cancel keys. 
 
This screen works just like your regular mobile phone. To initiate an outgoing call, dial the intended number and press the Dial button.
 
To terminate an active call, press the Cancel button.

Contents  Index
Initiating a SecureGSM™ Pro Call
 
To initiate an outgoing call, dial the intended number and press the Dial button.
Upon connection, you will be presented with the Party Verification screen.
 
If the line is busy or SecureGSM™ Pro cannot connect, you will be notified and SecureGSM™ Pro will escape to the Ready state.

Contents  Index
Party Verification
 
The SecureGSM™ Pro Party Verification screen is a unique, language independent module which is implemented to ensure that there is no doubt about the security of the encrypted communication channel.
 
Before communications can be considered secure, it is important to follow the procedures outlined below.
 
Upon connection of an outgoing or incoming phone call, you will be presented with the Party Verification Screen. The purpose of this stage is for both parties to verify each other, to ensure that both of you are in fact talking to the intended person and that there is no threat of eavesdropping on your conversation. 
 
There is a two step procedure for verification.
 
STEP 1 - Voice recognition.
 
You should be sure that you recognize the other party by voice, if you do not recognize their voice, then you don't know who you are actually talking to. 
 
Note: The human voice is considered extremely difficult to synthesize and/or impersonate. 
 
STEP 2 – Hash function representation confirmation.
 
To ensure that public key exchange is performed between authorised parties only, namely yourself and the other party with whom you wish to talk securely, a visual hash function (SHA-256) representation is displayed on the Party Verification screen which must be identical on both devices. This ensures that encryption can only happen between your two devices and that no “man in the middle” is present. 
 
The Hash function representation is a combination of one shape and four numbers. 
 
If the combination of shape and numbers is not identical on both devices, then your connection cannot be secure. This can happen only in instances where an “eavesdropper” or “man in the middle” is attempting to intercept your conversation, and is supplying a different set of encryption keys to each device or there is a network error and communication between devices has somehow been corrupted.
 
At this stage, it is a good idea to terminate communications and assume that the line cannot be secure.
 
As long as the verification screen is identical on both devices, pressing OK will instruct SecureGSM™ Pro to continue communications, and you can be rest assured that the line is truly secure*.

*Note: For users of SecureGSM™ Pro Evaluation, please refer to the "About SecureGSM™ Pro Evaluation" section for an explanation of the differences in security level.
 
The Status Bar will display information that the line is secure, and you are free to conduct your conversation and/or secure messaging.

Contents  Index
SecureGSM™ Pro Messaging Screen
 
 To switch to the Messaging screen, press the Notepad icon at the bottom of the SecureGSM™ Pro application screen.
 
Entering text
 
To enter text, tap in the Text Entry area and use your keyboard to enter short text messages. 
 
Note: Text entry is limited to 99 characters. If you need to send larger messages, just send the message in several parts.
 
Sending Text
 
 Once you have finished entering your message, press the Send Message icon to send the message.
 
Audible notification on receipt
 
When a message is received, an audible alert sounds in the speaker to notify you of a received message if you cannot see the screen at the time.
 
Resizing the Text Entry area/Message Monitor area
 
You can increase or decrease the size of the Text Entry area relative to the Message Monitor area to suit your individual preference. To change the display ratio between the Text Entry area and the Message Monitor area, tap-and-drag the divider line up or down according to your preference.
 
All messaging communications in SecureGSM™ Pro are verified and are displayed in the Message Monitor area. They are colour coded as follows.
 
Sent Message (waiting for delivery confirmation): Gray Text 
Sent Message (delivery confirmed and message verified): Black Text
Received Message: Blue, Bold
Undelivered Message: Red, with warning “Message could not be delivered:” 
 
Note: The messaging engine works simultaneously with the voice engine. You are free to conduct a conversation and exchange messages simultaneously at any time (when using a headset for example).

Contents  Index

Accessing Contacts from SecureGSM™ Pro
 
 To access your default Contacts Manager tap the Contacts Manager Icon from within the SecureGSM™ Pro application. If you have the Dialing from Contacts feature enabled, you can also use this feature to establish a SecureGSM™ call directly from your Contacts Manager.

Contents  Index

Dialing from Contacts
 
SecureGSM™ Pro supports dialing directly from your Contacts Application. When enabled in the Settings, a context menu item appears in your Contacts Application. In general, to access this feature, tap-and-hold the Contacts entry and choose the "SecureGSM Call" item to open the SecureGSM™ Pro Dial from Contacts screen.
 
The SecureGSM™ Pro Dial from Contacts screen presents all available numbers for the selected Contact's entry and allows you to choose the number to dial.
 
Choose the relevant number and tap the Dial button.
 
Notes on third party Contact Managers and PIM's
 
In some Contacts Manager applications, the context menus differ to the standard operating system functionality. You may have to choose this functionality from a nested menu (see below for examples).
 

WebIS Pocket Informant™

Tap and hold on the contact entry you would like to make a SecureGSM™ call to while in the Pocket Informant™ Contacts list screen. From the context menu choose "Extra" and then  choose "SecureGSM call".

Developer One Agenda Fusion™ 

Tap and hold on the contact entry you would like to make a SecureGSM™ call to while in the Agenda Fusion™ Contacts list screen, from the context menu choose "Add-ins" and then  choose "SecureGSM call". 

Contents  Index
Error Messages
 
The following is a list of error messages you may receive which are concerned primarily with network conditions and activities. Most are self explanatory, however, we have added some notes to those which may be ambiguous. Please note that these messages are supplied by the operating system, and in some cases an adequate explanation is not given or available.
  1. Your call could not be connected. The remote user has rejected the call. 
  1. The call was picked up from elsewhere. 
  1. Your call could not be connected. The call was forwarded by the switch. 
  1. Your call could not be connected. Line is busy or client declined your SecureGSM call. 
  1. Your call could not be connected. The remote user's station does not answer, switched off or out of coverage area. 
  1. The destination address is invalid.
    This error would generally mean that the number dialed does not exist or is incorrect
  1. Your call could not be connected for one of the following reasons: 
    CSD (DATACALL) service is not enabled on your mobile phone number or on the number you have dialed, SecureGSM is not running on the remote device or remote device could not be reached. 
  1. Your call could not be connected. The network is congested. 
  1. Your Call could not be connected. The remote user's station equipment is incompatible with the type of call requested. Permanent Error. Contact your service provider for details.
    This error would generally mean that the dialed party is in an area where the network cannot support CSD(DATACALL) functionality. 
  1. The reason for the disconnect is unavailable and will not become known later. 
  1. Your call could not be connected. A dial tone was not detected. 
  1. Your call could not be connected because the destination number has been changed, but automatic redirection to the new number is not provided. 
  1. Your call could not be connected or was disconnected because the destination device is out of order. 
  1. Your call could not be connected or was disconnected because of a temporary failure in the network; please try again later. 
  1. Your call could not be connected or was disconnected because the minimum quality of service could not be obtained or sustained. Try again later. 
  1. The call could not be connected because calls from the origination address are not being accepted at the destination address. "Black listed" 
  1. Your call could not be connected because the destination has invoked the Do Not Disturb feature. 
  1. The call was canceled. 
  1. Your call could not be connected. Software compatibility error. 
  1. Invalid line ID
    This error is associated with the phone functionality of your device and will come up on application start up when there is no phone functionality on the device (ie. the device is not a "phone enabled device"). 
  1. Error in 
    line_open_incoming_DATAMODEM()
    This error is associated with the phone functionality of your device and will come up on application start up when there is no phone functionality on the device (ie. the device is not a "phone enabled device").
Contents  Index

Status Messages
 
The following messages will appear in the Status Bar during SecureGSM™ Pro program operation.
 
"Ready"
The SecureGSM™ Pro application is ready to make and receive secure communications
 
"Calling"
The SecureGSM™ Pro application is calling (dialing) an outgoing call.
 
"Line connected. Negotiating"
The call has been successfully dialed and the SecureGSM™ Pro application is negotiating with the called device to establish a valid communication condition.
 
"Exchanging keys"
The SecureGSM™ Pro application is exchanging public keys upon receiving successful user input from the Party Verification module.
 
*Note: SecureGSM™ Pro Evaluation will display  "Emulating Key Exchange"
 
"Line secure. Strong encryption"
This message appears throughout a secure communication session and indicates that communications are secure.
 
*Note: SecureGSM™ Pro Evaluation will display  "Line secure. WARNING: Low encryption"
 
"Disconnecting"
The SecureGSM™ Pro application is disconnecting as a result from a user request or an application error.
 
"Warning! SecureGSM is disabled!"
The SecureGSM™ Pro application has been disabled. Information on how to enable/disable the SecureGSM™ Pro application is in the "Tools Menu" and "The Program Status Indicator" topics under the Program Operation heading.
 
"Error" 
The SecureGSM™ Pro application is installed on a device with no phone functionality (ie. the device is not a "phone enabled device").

Contents  Index

Security precautions and Best Practices
 
Depending on your requirements and the level of security required by you, below are some recommendations for ensuring a maximum security environment.
 
1. Bluetooth
In general, Bluetooth is known to be insecure. For the highest possible security, Bluetooth functionality should be switched off.
 
2. WiFI 
In general, WiFI is known to be insecure. For the highest possible security, WiFI functionality should be switched off.
 
3. Verification screen is important
Do not disregard this stage of your communication procedure. By ignoring the verification screen, you could make your SecureGSM™ call subject to a "Man-in-the-middle" attack.
 
4. Disable dialing from contacts functionality
Using this feature is convenient, however its use allows for the operating system to store rudimentary information in its log files (eg. Time and date of call, contact name, telephone number etc.). For maximum security, this feature should be disabled in SecureGSM™ Pro program settings.
 
5. Don't leave your device unattended at any time
Leaving your device unattended could enable a malicious party to modify your device and compromise security. This not only extends to SecureGSM™ Pro, but to other programs and data. Although it would be much easier to attach a bugging device than to modify the SecureGSM™ Pro application, this should not be discounted.
 
6. Password protect your device
Any steps you can take to protect your device are in your favour, and make any modification more difficult.
 
7. Use the SecureGSM™ Signature Verification Tool (SVT) regularly
To make sure that your SecureGSM™ Pro application has not been modified in any way, please run the Signature Verification Tool (SVT) regularly*.

*Not available with SecureGSM™ Pro Evaluation.
 
8. Do not pass sensitive information until line is secure
Wait until you have completed the Party Verification procedure before passing sensitive information.
 
9. Use  third party utilities to encrypt the file system of your device if security is of paramount importance.
Some vendors we know of that supply file system encryption software are (but not limited to):

Pointsec Mobile Technologies, Inc.
www.pointsec.com

JP Mobile PDA Defense
www.pdadefense.com


Contents  Index
 About SecureGSM™ Pro Evaluation
 About SecureGSM™ Pro
 Accessing Contacts from SecureGSM™ Pro
 Advanced Audio Control
 Carrier Requirements
 Dialing from Contacts
 Initiating a SecureGSM™ Pro Call
 Known Device Compatibility Issues
 Notes on carriers and providers.
 Party Verification
 Program Activation
 Reducing Echo
 SecureGSM™ Pro Dial Screen
 SecureGSM™ Pro Messaging Screen
 SecureGSM™ Pro Status Bar
 Security precautions and Best Practices
 Settings
 Status Messages
 The Program Status Indicator
 Tools Menu
 Welcome


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