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Security of GSM communication software

Software Model No.: OTS-GA68


Advanced Features:

SecureGSM™ SP/Pro advanced feature set.

Voice Engine

  • Completely real-time full-duplex operation – works just like a regular cell phone.
  • Voice Engine and Compression Module specifically optimised for speech and operation in noisy environments
  • Excellent audio quality – comparable to standard mobile communication.
  • Highly intelligible speech transmission.


  • Confirmation routines clearly identify sent, received and non-deliverable messages.
  • Integrity verification routines ensure that the received message is the same as the sent message.
  • At no time are you unsure of whether or not the other party has your message.
  • Convenient way to transmit passwords, numbers or any other information which may be problematic to understand by voice.
  • Where listening devices are suspected a whole conversation can be conducted using the messaging module.
  • Simultaneous secure voice and secure messaging.

Security and Encryption

  • SecureGSM™ SP and SecureGSM™ Pro feature robust, 256 bit, triple cipher, layered encryption based on AES, Twofish and Serpent ciphers. Any one of these encryption algorithms is considered unbreakable by today’s standards and the triple layer ensures that encrypted data is future proof.
  • If any one of the encryption algorithms is broken, or found flawed in the future, it is not possible to obtain data to decrypt or compromise the remaining layers or chains.
  • Robust asymmetric key generation engine, which is hardware optimised for fast key generation. Private and public keys are generated per session and subsequently destroyed (unrecoverable) upon termination of link.
  • Calling party identity verification procedures as protection form “man in the middle” attack and comprehensive procedures to ensure keys or foreign data have not been injected or substituted by a third party.
  • A 4Kbit public key ensures encrypted data is safe and secure.
  • Unique Party Authentication Module.

Party Authentication Module

  • Truly international, language independent Party Authentication Module to protect against a Man in the Middle attack.
  • Graphic style interface to help ensure, together with voice authentication, you are in fact connected to your intended party.
  • Visual secure Digest function representation: SHA-256 algorithm.

Program Status Indicator

The Program Status Indicator specifically monitors the operating system for the presence and status of the SecureGSM™ SP program process and displays the current status accordingly on the Home screen and other key areas.

SecureGSM™ SP operates on compatible handsets. Please check  the compatible phone list to see all available options for your chosen handset.


Operating System:

Windows Mobile 5.0 Smartphone Edition
OS Ver: 5.1.195 (build 14847.2.0.0) or greater (Microsoft Messaging and Security Feature Pack, MSFP)

Windows Mobile 6 Standard


ARM or compatible, 175MHz or better


Minimum 6Mb available

Screen Resolution:

176 x 220, 240 x 320, 320 x 240 pixels


Minimum 2Mb of space available

CSD Line:

9600bps or better (Note: These services may not be available via all operators, and may require separate subscription. It is the customer's responsibility to ensure that CSD services are available with their preferred GSM operator).


Microsoft ActiveSync: 4.1+

Note: If you try to install or run SecureGSM™ SP or SecureGSM™ SP Evaluation on a device which does not meet the minimum Operating System requirements as stated above, you will be presented with the following error message:

This product is designed to operate on a newer version of Windows Mobile.

If need Evaluation version, please send email to or


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  • OTP-SecureGSM In-Confidence

    Secure Phone & Security phone software  » Security of GSM communication software


    In-Confidence for iPhone and iPad is SecureGSM's next generation product designed to deliver our famous triple-layer encryption to Internet Telephony (Voice over IP - VoIP) communications.

    In-Confidence boasts an unparalleled level of security combined with state-of-the art, echo-free audio quality using superior quality audio engine components. But what sets In-Confidence apart from the competition is that it is the only dedicated multi-party conferencing product with triple layer encryption capabilities.

    These unique features combine to make In-Confidence the most user-friendly encrypted telephony application with a no-compromise security model.


  • Pages: 1