Editorial Technical Reference

Random Number Generator

This page explains how Random Number Generator is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A hardware component within a cryptographic processor that generates unpredictable numerical sequences for security applications.

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Product Specifications

Technical details and manufacturing context for Random Number Generator

Definition
A specialized electronic component integrated into cryptographic processors that produces statistically random or pseudorandom numbers through physical processes or deterministic algorithms. It serves as the foundation for cryptographic key generation, initialization vectors, nonces, and other security-critical functions by providing entropy essential for encryption, authentication, and secure communication protocols. The component is manufactured using semiconductor silicon, metal interconnects, and dielectric materials, and is typically packaged in QFN-32 to QFN-48 formats for compact PCB integration. Key parameters include an output bit length of 128–256 bits (per NIST SP 800-90A), an output data rate of 10–100 Mbps, and one to four entropy sources (per NIST SP 800-90B). It operates at a supply voltage of 1.8–3.3 V, consumes 10–50 mW, and is rated for industrial temperature ranges: -40 to 85 °C operating and -55 to 125 °C storage (per IEC 60068-2-1/2). It withstands relative humidity of 5–95% non-condensing (per IEC 60068-2-78) and offers ingress protection from IP40 to IP65 (per IEC 60529). The component weighs 1–5 g and may carry Common Criteria certification at EAL4+ (per ISO/IEC 15408). These specifications are reference ranges; verify model-specific values with the manufacturer.
Working Principle
The component generates random numbers by exploiting physical entropy sources such as thermal noise, quantum effects, or oscillator jitter, or by using deterministic algorithms like cryptographic hash functions or block ciphers in counter mode. Hardware-based implementations amplify and digitize analog noise, while software-based methods use mathematical algorithms seeded with entropy from system events. The resulting sequences exhibit high unpredictability, essential for cryptographic applications.
Common Materials
Semiconductor silicon, Metal interconnects, Dielectric materials
Technical Parameters
ParameterTypical rangeNotes & selection driver
Output Bit Length128–256 bitDetermines cryptographic strengthNIST SP 800-90A
Output Data Rate10–100 MbpsThroughput for key generation
Entropy Source1–4 channelsMultiple sources improve unpredictabilityNIST SP 800-90B
Supply Voltage1.8–3.3 VCompatible with standard logic levels
Power Consumption10–50 mWCritical for battery-powered devices
Operating Temperature-40–85 °CIndustrial grade rangeIEC 60068-2-1/2
Storage Temperature-55–125 °CSurvives harsh environmentsIEC 60068-2-1/2
Relative Humidity5–95 %Non-condensingIEC 60068-2-78
Ingress ProtectionIP40–IP65Higher rating for harsh environmentsIEC 60529
Package TypeQFN-32–QFN-48Compact footprint for PCB integrationJEDEC MS-026
Weight1–5 gAffects handling and assembly
CertificationCC EAL4+Common Criteria for securityISO/IEC 15408

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Entropy Source
    Generates raw unpredictable physical signals (e.g., thermal noise, oscillator jitter)
    Material: Semiconductor materials
  • Amplifier Circuit
    Amplifies weak entropy signals to measurable levels
    Material: Silicon with metal interconnects
  • Analog-to-Digital Converter
    Converts amplified analog entropy signals to digital bits
    Material: Semiconductor silicon
  • Post-Processing Logic
    Applies cryptographic functions to improve randomness quality and remove bias
    Material: Silicon with logic gates
  • Output Buffer
    Stores generated random numbers for retrieval by the cryptographic processor
    Material: Semiconductor memory cells

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric (non-pressurized)
other spec: Operating Voltage: 1.8V to 3.3V, Clock Frequency: 1-100MHz
temperature: -40°C to +85°C
Media Compatibility
✓ Secure enclosures ✓ Clean room environments ✓ EMI-shielded cabinets
Unsuitable: High-vibration industrial machinery
Sizing Data Required
  • Required entropy bits per second
  • Security certification level (FIPS 140-3, Common Criteria)
  • Physical footprint constraints

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading from random vibration patterns exceeding design limits, leading to subsurface crack initiation and propagation
Electronic component thermal degradation
Cause: Continuous high-frequency operation generating excessive heat, causing solder joint fatigue and semiconductor material breakdown
Maintenance Indicators
  • Unusual high-pitched whining or grinding noises during operation
  • Erratic output patterns or complete signal loss indicating component failure
Engineering Tips
  • Implement predictive maintenance using vibration analysis to detect early bearing wear before catastrophic failure
  • Install active cooling systems with temperature monitoring to maintain electronic components within optimal operating ranges

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO/IEC 19790:2012 - Security requirements for cryptographic modules ANSI X9.82-1:2006 - Random number generation DIN 66291:1992 - Random number generators for cryptographic applications

Quoted from the published standard.

Manufacturing Precision
  • Output uniformity: +/-0.1% deviation from ideal distribution
  • Bit independence: Correlation coefficient < 0.001 between adjacent bits
Quality Inspection
  • Statistical randomness test suite (NIST SP 800-22)
  • Entropy measurement and validation
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
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Manufacturers of Random Number Generator

Manufacturer profiles associated with Random Number Generator.

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Frequently Asked Questions

What is the output bit length of this RNG component?

The output bit length is 128–256 bits, as per NIST SP 800-90A. This range determines the cryptographic strength of the generated numbers. Always confirm the exact bit length for your specific model with the manufacturer.

How many entropy sources does it support?

It supports 1 to 4 entropy sources, as per NIST SP 800-90B. Multiple sources can improve unpredictability. Verify the number of sources for your application with the supplier.

What are the operating temperature limits?

The operating temperature range is -40 to 85 °C, and the storage temperature range is -55 to 125 °C, per IEC 60068-2-1/2. These are industrial-grade ranges. Check the datasheet for your specific model.

Is this component certified to Common Criteria?

The component may be certified to Common Criteria EAL4+ per ISO/IEC 15408. Certification is not guaranteed for all models; verify with the manufacturer or supplier.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Cryptographic Processor
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Security Processor
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Crypto Core
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Security Chip
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Key Management Module
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Encryption/Decryption Unit
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Secure Cryptoprocessor
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Security Module
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Encryption Chip
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Industrial Ecosystem & Supply Chain Structure

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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