Secure Key Storage: Key Storage Capacity Up to 256 keys

Q: What makes secure key storage different from regular memory?

Secure key storage incorporates physical tamper resistance, active monitoring, and immediate key destruction capabilities that regular memory lacks. It uses specialized hardware with security certifications and isolated execution environments.

Q: How are keys protected during power loss?

Keys are stored in non-volatile memory with battery-backed security or in encrypted form with cryptographic wrapping. Tamper detection circuits maintain protection even during power-off states.

Q: Can secure key storage be integrated with existing systems?

Yes, through standard interfaces like SPI or I2C with secure channel protocols. Most units provide API libraries for common embedded platforms and industrial controllers.

Component Specifications

Definition

A tamper-resistant hardware component designed to securely generate, store, and manage cryptographic keys within encryption/decryption units. It provides physical protection against unauthorized access, extraction, or manipulation of sensitive key material through specialized security mechanisms including anti-tamper coatings, active shielding, and zeroization capabilities.

Working Principle

Utilizes dedicated secure microcontrollers with hardware-based cryptographic accelerators and isolated memory partitions. Implements key generation through true random number generators, stores keys in encrypted form with hardware-enforced access controls, and employs continuous monitoring for physical tamper detection that triggers immediate key erasure (zeroization) upon security breach detection.

Materials

Multi-layer PCB with FR-4 substrate, tamper-resistant epoxy encapsulation, copper shielding layers, and security mesh coatings. Components include secure microcontroller (Common Criteria EAL5+ certified), discrete cryptographic accelerators, temperature-compensated crystal oscillators, and tamper detection sensors.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Interface	SPI/I2C with secure channel
Data Retention	10+ years
Power Consumption	< 50mA @ 3.3V
Key Types Supported	AES-256, RSA-4096, ECC-384
Physical Dimensions	25mm x 25mm x 4mm
Key Storage Capacity	Up to 256 keys
Tamper Response Time	< 100μs
Operating Temperature	-40°C to +85°C

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

Standards

ISO/IEC 19790, FIPS 140-3, Common Criteria, IEC 62443

Parent Products

This component is used in the following industrial products

Encryption/Decryption Unit

A hardware component within an Access Control Unit that performs cryptographic operations to secure data transmission and authentication.

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Engineering Analysis

Risks & Mitigation

Physical tampering attempts
Side-channel attacks
Supply chain compromise
Environmental stress failure
Firmware vulnerabilities

FMEA Triads

Trigger: Physical tampering or probing
Failure: Unauthorized key extraction or manipulation
Mitigation: Multi-layer tamper detection mesh, immediate zeroization circuitry, epoxy encapsulation with security particles

Trigger: Power supply fluctuations
Failure: Corrupted key storage or false tamper triggers
Mitigation: Dual power monitoring circuits, brown-out detection, redundant voltage regulators with filtering

Trigger: Temperature extremes
Failure: Temperature-compensated oscillators, thermal sensors with shutdown protocols, extended temperature range components
Mitigation:

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Infineon OPTIGA, NXP A71CH, Microchip ATECC608A, STMicroelectronics STSAFE

Compliance & Inspection

Tolerance

±0.1% for cryptographic timing, ±2% for voltage monitoring, tamper detection sensitivity: < 5μm penetration

Test Method

Environmental stress testing (MIL-STD-883), side-channel analysis (DPA/SPA), fault injection testing, penetration testing with microprobing

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Secure Key Storage

Manufacturer profiles associated with Secure Key Storage.

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Frequently Asked Questions

What makes secure key storage different from regular memory?