About SecureGSM™ SP Evaluation
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There are some differences between the SecureGSM™ SP Evaluation and SecureGSM™ SP which are as follows:

Low encryption

•The encryption offered in SecureGSM™ SP Evaluation is a single cipher with substantially lower strength and easy to decrypt.
•Absence of Diffie-Hellman public key infrastructure.
•Private keys hard-coded into the application, thus the public key infrastructure not be present.

 

SecureGSM™ SP Evaluation fixed (hard coded) session key:

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unsigned char fixedKey[] = {

       0xDF, 0x3D, 0x13, 0x4D, 0xD7, 0x18, 0x14, 0x9E, 0x6D, 0xA6, 0xCF, 0xE1, 0xB2, 0x27, 0x01, 0xA7,

       0x52, 0xAC, 0x0C, 0x8A, 0xBD, 0xE3, 0x31, 0x9E, 0x6F, 0xEB, 0x99, 0x8D, 0xCF, 0x67, 0x0D, 0x74 };

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The following are parts of the stream cipher used in SecureGSM™ SP Evaluation responsible for encryption and decryption.

Note: This cipher is based on an extremely weak algorithm and therefore intended to be used for evaluation purposes only.

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unsigned char C_SGSM_FakeCipher::encryptByte(unsigned char plaintext) {

       plaintext ^= fixedKey[blockPointer];

       blockPointer++;

       if (blockPointer >= sizeof(fixedKey))

       {

               globalCounter += sizeof(fixedKey);

               blockPointer = 0;

       }

       return plaintext;

}

 

////////////////////////////////////////////////////////////////

unsigned char C_SGSM_FakeCipher::decryptByte(unsigned char ciphertext) {

       return encryptByte(ciphertext);

}

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Apart from the limited security, SecureGSM™ SP Evaluation is a fully functioning software product with exactly the same core engines as SecureGSM™ SP. Upon purchase of SecureGSM™ SP, you will not notice any difference in functionality or audio quality.

Please note, that SecureGSM™ SP Evaluation and SecureGSM™ SP are not compatible to each other, due to the differences in security implementations.

Both SecureGSM™ SP Evaluation (for Windows Mobile Smartphone) and SecureGSM™ Evaluation (For Windows Mobile Phone Edition) are interoperable with each other.

We encourage you to download the SecureGSM™ SP Evaluation 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 this SecureGSM™ product.

Please note that you are free to use SecureGSM™ SP Evaluation for as long as you like, however be aware that this version does not provide any substantial level of protection.

 
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