Key Storage Module for Security Controllers

Product Specifications

Technical details and manufacturing context for Key Storage Module

Definition

The Key Storage Module is a critical sub-component of a Security Controller responsible for the secure generation, storage, and management of cryptographic keys. It provides a tamper-resistant environment to prevent unauthorized access, extraction, or modification of sensitive key material, ensuring the integrity of encryption, decryption, and authentication processes within the larger security system. The module is designed for integration into electronic products, particularly in the computer, electronic, and optical product manufacturing sector. It is a component-level part, typically mounted on a printed circuit board (PCB) and communicating with the host controller via standard interfaces such as I2C, SPI, or UART. The module's storage capacity ranges from 64 to 256 KB, sufficient for multiple key sets and certificates. It can generate keys at a rate of 100 to 1000 keys per second, with a key access latency of 1 to 10 milliseconds, critical for real-time authentication. The tamper resistance level is rated according to FIPS 140-2, with levels 4 to 6, where level 6 is intended for military applications. The module operates over a temperature range of -40 to 85 °C (IEC 60068-2-1) and can be stored at -55 to 125 °C (IEC 60068-2-2). It withstands humidity from 5% to 95% RH (non-condensing) per IEC 60068-2-78. Supply voltage is 3.3 to 5.0 V DC, with power consumption between 0.5 and 2.0 W, suitable for battery-operated devices. Data retention is 10 to 20 years at 85 °C (JESD22-A103), and write endurance is 100,000 to 1,000,000 cycles (JESD22-A117). The module measures 10×10 to 20×20 mm and weighs 2 to 10 g. Materials include silicon for integrated circuits and epoxy molding compound for encapsulation. All values are reference ranges; verify model-specific specifications with the manufacturer.

Working Principle

The module operates by isolating cryptographic keys within a dedicated, hardened hardware boundary. It uses physical security measures such as tamper detection and secure memory, along with logical controls like access policies and key usage counters. When the Security Controller requires a cryptographic operation, it sends a command to the module, which performs the operation internally without exposing the raw key, returning only the result (e.g., a signature or encrypted block). This ensures that keys never leave the secure environment, protecting against extraction or modification. The module's tamper-resistant design triggers responses to physical attacks, such as zeroizing keys upon tamper attempts. It also enforces usage policies, limiting the number of operations per key. The module's interface allows the host to request key generation, storage, and cryptographic functions, while maintaining strict access control. The working principle relies on the module's ability to securely execute algorithms and manage key lifecycles, ensuring the integrity of the overall security system.

Common Materials

Silicon (for integrated circuits), Epoxy molding compound (for encapsulation)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Storage Capacity	64–256 KB	Sufficient for multiple key sets and certificates.
Key Generation Rate	100–1000 keys/s	Higher rate for high-volume provisioning.
Key Access Latency	1–10 ms	Critical for real-time authentication.
Tamper Resistance Level	4–6	Level 4 is highest; Level 6 for military.FIPS 140-2
Operating Temperature	-40–85 °C	Extended range for industrial environments.IEC 60068-2-1
Storage Temperature	-55–125 °C	Survives harsh shipping conditions.IEC 60068-2-2
Humidity Range	5–95 % RH	Non-condensing; condensation may cause corrosion.IEC 60068-2-78
Supply Voltage	3.3–5.0 V DC	Typical for embedded systems.
Power Consumption	0.5–2.0 W	Low power for battery-operated devices.
Interface Protocol	I2C, SPI, UART	Select based on host controller compatibility.
Data Retention	10–20 years	At 85°C; longer at lower temps.JESD22-A103
Write Endurance	100000–1000000 cycles	For frequent key updates.JESD22-A117
Dimensions	10×10–20×20 mm	Compact for PCB integration.
Weight	2–10 g	Lightweight for portable devices.

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

Secure Memory
Stores cryptographic keys in a non-volatile, tamper-resistant memory cell.

Material: Silicon-based non-volatile memory (e.g., EEPROM, Flash)
Cryptographic Processor
Performs encryption, decryption, and key generation operations internally without exposing keys.

Material: Silicon (cryptographic co-processor core)
Tamper Detection Mesh
A conductive grid that detects physical intrusion attempts (drilling, probing) and triggers key zeroization.

Material: Conductive polymer or metal traces
Key Usage Counters
Cap how many times each key may be used before it must be rotated.

Applied To / Applications

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

Security Controller

View system integration details

Cryptographic Coprocessor

View system integration details

Manufacturers of Key Storage Module

Manufacturer profiles associated with Key Storage Module.

Sourcing Key Storage Module from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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.

Frequently Asked Questions

What is the typical storage capacity of a Key Storage Module?

The storage capacity is typically in the range of 64 to 256 KB, which is sufficient for multiple key sets and certificates. The exact capacity depends on the specific module model and configuration.

What tamper resistance levels are available?

The module is designed to meet FIPS 140-2 tamper resistance levels 4 to 6, with level 6 being the highest, intended for military applications. The actual level achieved depends on the specific implementation and should be verified with the manufacturer.

Which interface protocols does the module support?

The module supports standard interface protocols such as I2C, SPI, and UART. The choice of interface depends on the host controller compatibility and should be selected accordingly.

What are the operating temperature limits?

The operating temperature range is -40 to 85 °C, as per IEC 60068-2-1. For storage, the range is -55 to 125 °C per IEC 60068-2-2. These are reference ranges; verify the specific model's ratings.

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.

Buyer enquiry

Request manufacturing insight for Key Storage Module

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

humidity:	5% to 95% non-condensing
temperature:	-40°C to +85°C
write cycles:	100,000 cycles minimum
operating voltage:	1.8V to 3.6V
storage endurance:	10 years data retention

Key Storage Module

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards