Key Storage

Key Storage is a dedicated, tamper-resistant hardware module integrated into a cryptographic processor. It provides secure generation, storage, and management of cryptographic keys, protecting them from unauthorized access, extraction, or modification, even under physical attack. This component is essential for operations such as encryption, decryption, and digital signing, ensuring that sensitive key material remains confidential and intact throughout the product's lifecycle.

The module typically consists of non-volatile memory (e.g., EEPROM, flash, or specialized secure memory) protected by physical security layers such as metal shielding and mesh sensors, as well as logical security mechanisms like access control and encryption of the stored keys themselves. It interfaces with the cryptographic processor's core logic, which can request keys for operations but cannot directly read the raw key material without proper authorization. Keys are often generated internally via a True Random Number Generator (TRNG) and never leave the secure boundary in plaintext.

Key Storage is used in a wide range of applications, including secure communications, data protection, digital rights management, and authentication systems. It is designed to meet stringent security requirements and is often evaluated against industry standards for tamper resistance and data retention.

For procurement and integration, it is important to verify model-specific parameters such as storage capacity, key length support, data retention, write endurance, read access time, supply voltage, operating temperature, storage temperature, ESD tolerance, package size, and weight. These values are provided as reference ranges and must be confirmed with the legal manufacturer or supplier for the specific model and application. Additionally, relevant standards such as ISO/IEC 18033, JESD22-A117, JEDEC JESD8, IEC 60068-2-2 (dry-heat test reference; it does not establish the listed storage-temperature range), IEC 61000-4-2, and JEDEC MO-229 should be referenced for verification and compliance assessment. IEC 60068-2-14 concerns specified temperature-change tests and does not establish the listed operating-temperature range.

Key Storage operates by storing cryptographic keys in non-volatile memory protected by physical and logical security measures. Physical layers include metal shielding and mesh sensors that detect tampering, while logical mechanisms include access control and encryption of stored keys. The cryptographic processor's core logic can request keys for operations but cannot directly read raw key material without proper authorization. Keys are often generated internally via a True Random Number Generator (TRNG) and never leave the secure boundary in plaintext, ensuring confidentiality and integrity.