DS28CZ04G-4+

The DS28CZ04G-4+ is a 0.5 Kbit EEPROM with secure cryptographic memory solution. It incorporates an optional cryptographic engine that supports cryptographic key generation, cryptographic operations and secure data storage for a wide range of applications.

Application Field

The DS28CZ04G-4+ is a secure, low cost EEPROM solution for a variety of embedded applications, such as:

• Secure logging
• Logs signature
• Configurable fixed data
• Secure boot
• Secure encrypt/decrypt
• Biometric applications
• Secure access control

The DS28CZ04G-4+ provides a secure programming environment with the ability to store and recover data in a secure matter, allowing secure access to the stored data. The EPPROM can also be programmed to erase data, allowing it to be reused when necessary.

Working Principle

The DS28CZ04G-4+ works on a simple concept; it stores data in a secure cryptographic memory. When data is written or requested from the memory, the cryptographic engine is activated, performing cryptographic operations on the data to secure it. This secure data cryptographically signed with a unique key, which is used to verify the authenticity and integrity of the data.

When writing data to the memory, the engine generates a unique key and encrypts the data using the key. When receiving data, the engine authenticates the key, decrypts the data and verifies it against the key. If the key is valid, the data is accepted and stored. If the key is invalid, the data is discarded.

The engine also takes advantage of the secure boot technology, which is designed to protect the memory from manipulation by malicious software or malicious actors. Secure boot works by verifying the integrity of the boot code, preventing the code from being tampered with or corrupted.

The DS28CZ04G-4+ also supports the SHA-256 cryptographic algorithm to protect data. The SHA-256 algorithm can securely store data up to 40 MB in size, making it an ideal choice for secure data storage. Additionally, the algorithm is also capable of generating unique keys for encrypting or signing data.

Overall, the DS28CZ04G-4+ is a secure, low cost EEPROM solution for embedded applications. With its secure cryptographic memory and cryptography engine, the DS28CZ04G-4+ provides a secure environment for data storage, enabling secure access and data integrity.