Security Keys

One-time Pad (OTP) requires both a sender and a receiver to share encryption keys. This is usually not feasible when communicating with multiple parties. Unlike a regular cipher, OTP keys must be the same size as the message encrypted, be truly random, used only once and then destroyed. Therefore, OTP keys must be managed to make them available at times of communication. 

Each device must store enough key material for all OTP communications since the used key is destroyed. The OTP key file must be sufficiently large to enable uninterrupted communications over a period of time. Fortunately, communication devices today have ample storage capacity and can store keys that can possibly last for several years of moderate OTP use. 

All network communications related to the OTP key management should also be protected with One-time Pad. It requires an initial OTP key to be physically installed on communication device. Transmitting OTP keys over the Internet, protected with commercial security, theoretically reduces the overall system security to the security level of this transmission. Therefore, SECROM uses a trusted carrier to physically deliver security keys to its customers on encrypted media and only within the United States.




Secure Communication Solutions

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