CISA & FPIC publish: Transition to Advanced Encryption Standard (AES) Whitepaper

Encryption serves as the primary method to ensure confidentiality and authentication of sensitive land mobile radio (LMR) voice and data communications. In 2001, the National Institute of Standards and Technology (NIST) designated the Advanced Encryption Standard (AES) as the successor to the Data Encryption Standard (DES) for federal departments and agencies.

AES was selected due to its robust security features and resistance to cryptographic attacks compared to DES, which had become vulnerable due to advances in computing power. AES supports key sizes of 128, 192, and 256 bits, providing stronger encryption capabilities suitable for securing classified and sensitive information.

By 2005, NIST formally withdrew its approval of DES and mandated AES as the new encryption standard under the Federal Information Processing Standard (FIPS) Publication 197. This transition ensured that federal government agencies and departments upgraded their encryption practices to align with modern security standards, thereby enhancing the protection of sensitive communications against unauthorized access and interception.

Overall, AES's adoption as the standard encryption algorithm under FIPS marked a significant advancement in cryptographic technology, reflecting its reliability, efficiency, and widespread adoption across both governmental and commercial sectors worldwide.

CISA & FPIC publish: Transition to Advanced Encryption Standard (AES) Whitepaper