Security Key Storage Component for Secure Interface Controllers

Product Specifications

Technical details and manufacturing context for Security Key Storage

Definition

The Security Key Storage is a dedicated hardware module within the Secure Interface Controller responsible for the secure generation, storage, and management of cryptographic keys, digital certificates, and other sensitive authentication credentials. It provides tamper-resistant protection against physical and logical attacks, ensuring the integrity and confidentiality of security assets used for device authentication, data encryption, and secure communication protocols. The component typically utilizes a secure element or trusted platform module (TPM) architecture. It generates keys internally using a hardware random number generator, stores them in encrypted, non-extractable form within isolated, tamper-detecting memory. Access to stored keys is strictly controlled through cryptographic protocols, requiring authentication before any cryptographic operation (e.g., signing, encryption) is performed using the key, without exposing the raw key material to the main system processor. The component is available in various package types (SOIC-8, TSSOP-8, QFN-8) and operates over a supply voltage range of 1.8–3.6 V, with an operating temperature range of -40 to 85 °C. It offers storage capacity of 8–64 KB, data retention of 10–20 years (at 25°C, per JESD22-A103), endurance of 100k–500k program/erase cycles (per JESD22-A117), standby current of 1–10 µA, active current of 5–20 mA, clock frequency of 1–50 MHz (SPI or I2C interface dependent), ESD tolerance of 2–4 kV (HBM, per IEC 61000-4-2), and tamper resistance level L3–L4 (per FIPS 140-2). The footprint ranges from 3.0 to 5.0 mm² depending on package type. The component is RoHS compliant. All values are reference ranges and must be confirmed for the specific model and application with the legal manufacturer or supplier.

Working Principle

The Security Key Storage uses a secure element or TPM architecture. It generates cryptographic keys internally via a hardware random number generator, ensuring high entropy. Keys are stored in encrypted, non-extractable form within isolated memory that includes tamper-detection mechanisms. Access to keys is gated by cryptographic authentication protocols; the main processor can request operations (e.g., signing, encryption) but never reads raw key material. The component supports SPI or I2C interfaces for communication. It operates within specified voltage, temperature, and clock ranges, and provides ESD protection. Tamper resistance is achieved through physical and logical safeguards, meeting FIPS 140-2 level L3–L4. The component's endurance and data retention are specified under JEDEC standards, ensuring reliable long-term storage.

Common Materials

Silicon (Secure Element Chip), Epoxy Molding Compound, Gold Bonding Wires

Technical Parameters

Parameter	Typical range	Notes & selection driver
Storage Capacity	8–64 KB	Sufficient for multiple key sets and certificates
Data Retention	10–20 years	At 25°C; higher temperature reduces retentionJESD22-A103
Endurance	100k–500k cycles	Minimum program/erase cycles per sectorJESD22-A117
Supply Voltage	1.8–3.6 V	Full operation over temperature rangeJEDEC JESD8-7A
Operating Temperature	-40–85 °C	Industrial grade; extended range availableJEDEC JESD22-A104
Standby Current	1–10 µA	At 25°C, VCC=3.3V
Active Current	5–20 mA	During read/write at max frequency
Clock Frequency	1–50 MHz	SPI or I2C interface dependent
ESD Tolerance	2–4 kV	HBM modelIEC 61000-4-2
Tamper Resistance	L3–L4 level	Physical and logical protectionFIPS 140-2
Package Type	SOIC-8, TSSOP-8, QFN-8	RoHS compliantJEDEC MS-012
Footprint	3.0–5.0 mm²	Depends on package type

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 Cryptoprocessor
Executes cryptographic algorithms (encryption, decryption, signing) internally without exposing key material.

Material: Silicon
Tamper-Detection Mesh
A conductive grid surrounding the core chip that detects physical penetration attempts and triggers key erasure.

Material: Polyimide with conductive traces
Non-Volatile Memory Part
Stores encrypted keys, certificates, and security configuration in a persistent, tamper-resistant state.

Material: Flash memory cells (on-chip)
True Random Number Generator
Generates high-entropy random numbers used for secure key generation within the module.

Material: Silicon (based on thermal or phase noise)

Applied To / Applications

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

Secure Interface Controller

View system integration details

Manufacturers of Security Key Storage

Manufacturer profiles associated with Security Key Storage.

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Frequently Asked Questions

What is the typical storage capacity of this component?

The storage capacity is typically 8–64 KB, sufficient for multiple key sets and certificates. Confirm the exact capacity for your specific model.

How does the component protect against physical attacks?

It uses tamper-resistant packaging and tamper-detecting memory. The tamper resistance level is rated L3–L4 per FIPS 140-2, providing physical and logical protection. Verify the level for your application.

What communication interfaces are supported?

The component supports SPI or I2C interfaces, depending on the model. The clock frequency ranges from 1–50 MHz. Check the datasheet for interface specifics.

What is the operating temperature range?

The industrial-grade operating temperature range is -40 to 85 °C, with extended ranges available. Confirm the range for your specific part.

Data Basis

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

Preliminary Technical Classification

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humidity:	0% to 95% non-condensing
temperature:	-40°C to +85°C
data retention:	10 years minimum
shock vibration:	50g shock, 5g vibration
operating voltage:	3.3V ±10%

Security Key Storage

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards