Which encryption method is used for Dedicated SATCOM?

• A. KY-58
• B. KG-40A
• C. KG-175 with CIK
• D. AES encryption

Answer: (A)

Secure SATCOM channels rely on a hardware encryption device that provides Type 1 protection for the voice path. The KY-58 is built specifically as a voice encryption unit that plugs into satellite-voice links to encrypt audio before it leaves the terminal. That direct role—protecting the actual SATCOM voice channel with a dedicated crypto device—makes it the best fit for Dedicated SATCOM in this context.

The other devices and the AES option represent different kinds of encryption: KG-40A and KG-175 with CIK are different crypto products used for other link types or data scenarios, not the standard voice protection for dedicated SATCOM, and AES is an encryption algorithm rather than a standalone secure-voice hardware unit.