RDSEED

E637100

RDSEED is an Intel CPU instruction that provides access to a hardware-based random number generator for producing high-quality random seeds.

All labels observed (2)

Label Occurrences
Intel RDSEED 1
RDSEED canonical 1

How this entity was disambiguated

Statements (46)

Predicate Object
instanceOf Intel CPU instruction ⓘ
x86 instruction ⓘ
architecture x86 ⓘ
x86-64 ⓘ
availabilityCheck CPUID instruction ⓘ
category random number generation instruction ⓘ
cpuidLeaf CPUID.(EAX=07H, ECX=0):EBX.RDSEED[bit 18] ⓘ
designedFor cryptographic applications ⓘ
seeding pseudorandom number generators ⓘ
differenceFromRDRAND RDSEED provides raw entropy for seeding PRNGs while RDRAND provides pseudorandom numbers directly ⓘ
differsFrom RDRAND ⓘ
encoding F3 0F C7 /7 ⓘ
entropySource on-chip hardware entropy source ⓘ
failureReason entropy pool not ready ⓘ
intendedConsumers applications requiring strong randomness ⓘ
cryptographic libraries ⓘ
system software ⓘ
introducedBy Intel ⓘ
linked to: Intel Corporation
introducedInMicroarchitecture Intel Broadwell ⓘ
latencyCharacteristic variable latency depending on entropy availability ⓘ
naming mnemonic for random seed generation ⓘ
operandSizes 16-bit ⓘ
32-bit ⓘ
64-bit ⓘ
outputQuality cryptographically secure random seeds ⓘ
outputType true random numbers suitable as seeds ⓘ
purpose produce high-quality random seeds ⓘ
provide access to a hardware-based random number generator ⓘ
randomnessType hardware-generated random data ⓘ
relatedTo RDRAND ⓘ
relationToDRNG front-end interface to Intel digital random number generator ⓘ
requires processor support for Intel Secure Key technology ⓘ
retryRecommendation software should retry with backoff when CF=0 ⓘ
securityProperty designed to meet NIST SP 800-90A/B/C requirements (per Intel documentation) ⓘ
setsFlagOnFailure CF=0 ⓘ
setsFlagOnSuccess CF=1 ⓘ
sideEffects may update ZF, SF, OF, AF, PF as undefined ⓘ
standardization documented in Intel 64 and IA-32 Architectures Software Developer’s Manual ⓘ
statusOnUnsupportedCPU invalid opcode exception (#UD) ⓘ
supportedBy Intel Broadwell processors and later ⓘ
some AMD processors ⓘ
useCase key generation seeding ⓘ
nonce generation seeding ⓘ
session identifier seeding ⓘ
uses digital random number generator (DRNG) ⓘ
writesTo general-purpose register operand ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Goldmont → supports → RDSEED ⓘ
Intel Secure Key → relatedTo → Intel RDSEED ⓘ
subject linked to: Intel Secure Key (RDRAND)
linked to: RDSEED