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A Type 1 Product refers to an NSA endorsed classified or controlled cryptographic item for classified or sensitive U.S. government information, including cryptographic equipment, assembly or component classified or certified by NSA for encrypting and decrypting classified and sensitive national security information when appropriately keyed.
A cipher suite is a set of algorithms that help secure a network connection. Suites typically use Transport Layer Security (TLS) or its deprecated predecessor Secure Socket Layer (SSL). The set of algorithms that cipher suites usually contain include: a key exchange algorithm , a bulk encryption algorithm , and a message authentication code ...
Both Suite A and Suite B can be used to protect foreign releasable information, US-Only information, and Sensitive Compartmented Information (SCI)." [1] In 2018, NSA replaced Suite B with the Commercial National Security Algorithm Suite (CNSA). [2] Suite B's components were: Advanced Encryption Standard (AES) with key sizes of 128 and 256 bits.
The Commercial National Security Algorithm Suite (CNSA) is a set of cryptographic algorithms promulgated by the National Security Agency as a replacement for NSA Suite B Cryptography algorithms. It serves as the cryptographic base to protect US National Security Systems information up to the top secret level, while the NSA plans for a ...
Table compares implementations of block ciphers. Block ciphers are defined as being deterministic and operating on a set number of bits (termed a block) using a symmetric key. Each block cipher can be broken up into the possible key sizes and block cipher modes it can be run with.
A secure block cipher can be converted into a CSPRNG by running it in counter mode using, for example, a special construct that the NIST in SP 800-90A calls CTR DRBG. CTR_DBRG typically uses Advanced Encryption Standard (AES). AES-CTR_DRBG is often used as a random number generator in systems that use AES encryption. [9] [10]
Other agencies, particularly NIST, have taken on the role of supporting security for commercial and sensitive but unclassified applications. NSA's certification of the unclassified NIST-selected AES algorithm for classified use "in NSA-approved systems" suggests that, in the future, NSA may use more non-classified algorithms. The KG-245A and KG ...
A Type 4 product was an encryption algorithm that was registered with NIST but is not a Federal Information Processing Standard (FIPS), defined as: Unevaluated commercial cryptographic equipment, assemblies, or components that neither NSA nor NIST certify for any Government usage.