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RDRAND

RDRAND (for "read random") is an instruction for returning random numbers from an Intel on-chip hardware random number generator which has been seeded by an on-chip entropy source.[1] It is also known as Intel Secure Key Technology,[2] codenamed Bull Mountain.[3] Intel introduced the feature around 2012, and AMD added support for the instruction in June 2015. (RDRAND is available in Ivy Bridge processors[a] and is part of the Intel 64 and IA-32 instruction set architectures.) [5]

The random number generator is compliant with security and cryptographic standards such as NIST SP 800-90A,[6] FIPS 140-2, and ANSI X9.82.[1] Intel also requested Cryptography Research Inc. to review the random number generator in 2012, which resulted in the paper Analysis of Intel's Ivy Bridge Digital Random Number Generator.[7]

RDSEED is similar to RDRAND and provides lower-level access to the entropy-generating hardware. The RDSEED generator and processor instruction rdseed are available with Intel Broadwell CPUs[8] and AMD Zen CPUs.[9]

  1. ^ a b "Intel Digital Random Number Generator (DRNG): Software Implementation Guide, Revision 1.1" (PDF). Intel Corporation. 2012-08-07. Retrieved 2012-11-25.
  2. ^ "What is Intel® Secure Key Technology?". Intel. Retrieved 2020-09-23.
  3. ^ Hofemeier, Gael (2011-06-22). "Find out about Intel's new RDRAND Instruction". Intel Developer Zone Blogs. Retrieved 30 December 2013.
  4. ^ Desktop 3rd Generation Intel Core Processor Family, Specification Update (PDF). Intel Corporation. January 2013.
  5. ^ "AMD64 Architecture Programmer's Manual Volume 3: General-Purpose and System Instructions" (PDF). AMD Developer Guides, Manuals & ISA Documents. June 2015. Retrieved 16 October 2015.
  6. ^ Barker, Elaine; Kelsey, John (January 2012). "Recommendation for Random Number Generation Using Deterministic Random Bit Generators" (PDF). National Institute of Standards and Technology. doi:10.6028/NIST.SP.800-90A. Retrieved September 16, 2013. {{cite journal}}: Cite journal requires |journal= (help)
  7. ^ Hamburg, Mike; Kocher, Paul; Marson, Mark (2012-03-12). "Analysis of Intel's Ivy Bridge Digital Random Number Generator" (PDF). Cryptography Research, Inc. Archived from the original (PDF) on 2014-12-30. Retrieved 2015-08-21.
  8. ^ Hofemeier, Gael (2012-07-26). "Introduction to Intel AES-NI and Intel SecureKey Instructions". Intel Developer Zone. Intel. Retrieved 2015-10-24.
  9. ^ "AMD Starts Linux Enablement On Next-Gen "Zen" Architecture - Phoronix". www.phoronix.com. Retrieved 2015-10-25.


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