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� Y Distribution of key material to subscribers will be conducted via manual re-keying using <br /> the KVL 3000 Plus key loacler. , <br /> Secure (Encrypted) Voice Communications II <br /> Motorola provides systems with the capability to protect their Land Mobile Radio(LMR)voice <br /> communications with sophisticated, digital encryption. The encryption used in our digital <br /> systems offers a great improvement in terms of audio quality over encryption used in ]2 Kbps j <br /> systems. The digital encryption does not impact audio quafity. Encryption allows users the <br /> ability to sen�d and receive sensitive information over the air with the confidence that only those <br /> whom it was intended will receive it. I <br /> Supported Algorithms <br /> Motorola offers the following encryption algorithms on the STARCOM21 System: DES-OFB <br /> and AES. ' <br /> Project 25 defines the DES-OFB encryption algorithm as the standard encryption algorithm that <br /> allows encrypted interoperability between Project 25 compliant radios from other manufacturers. <br /> OFB stands for Output Feedback, the encryption synchronization method adopted by Project 25. <br /> The National Institute of Standard and Technology (NIST)defines AES encryption as the : <br /> standard encryption algorithm defined under the Advanced Encryption Standard (AES)for use by <br /> U.S. Federal and Canadian National Government agencies and, on a voluntary basis, by <br /> organizations, institutions, and individuals domestically and internationally. <br /> Single Algorithm <br /> Single algorithm means that one encryption algorithm can be used in a two-way radio system. <br /> This allows users the ability to send and receive sensitive information ovei•the air with the <br /> confidence that only those whom it was intended will receive it. <br /> Multiple Algorithms <br /> Multiple algorithm capability means that up to two or more different encryption algorithms can <br /> be used in a two-way radio system. Multiple algorithms provide additional flexibility for larger <br /> organizations requiring completely separate operations or for two or more completely <br /> autonomous groups, who only have to occasionally work and communicate together through an <br /> interoperable mode of operation. Multiple algorithms also provide backward compatibility to <br /> subscribers. Subscribers with multiple a(gorithms can be shared with different infrastructures, <br /> which happen to use different encryption algorithms. <br /> Distribution of Key Material <br /> Delivering and updating encryption keys to a secure device will be done manually using the KVL <br /> 3000 Plus key loader. A key loader is a hand held portable device, which connects via a cable to <br /> a secure device. The key loader supplies the "encryption keys" needed to perform encrypt and <br /> decrypt operations properly. <br /> Key Loader— KVL 3000 Plus <br /> CSA.NoESS.FI NAL.4-8-08 8 <br /> Motorola Contract No.08-17033/LF <br />