DS2465
DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function
Advanced Physical Security Protects System Secret, Offloads Host SHA-256 Computing
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DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.
The DeepCover Secure Authenticator (DS2465) is a SHA-256 coprocessor with built-in 1-Wire® master that provides the SHA-256 and memory functionality required by a host system to communicate with and operate a 1-Wire SHA-256 slave. In addition, it performs protocol conversion between the I2C master and any attached 1-Wire SHA-256 slaves. For 1-Wire line driving, internal user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. The 1-Wire line can be powered down under software control. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs. When not in use, the DS2465 can be put in sleep mode where power consumption is minimal.
A DS2465 evaluation board is included in each of the authenticator evaluation kits below.
Key Features
- SHA-256 Engine to Operate a Symmetric-Key-Based Bidirectional Secure Authentication Model
- Two 32-Byte Pages of User EEPROM with Multiple Programmable Protection Options
- 1-Wire Master Port with Selectable Active or Passive 1-Wire Pullup
- Strong 1-Wire Pullup Provided by an Internal Low-Impedance Signal Path
- 1-Wire Port Can Be Powered Down Under Software Control
- I²C Operating (Pullup) Voltage: 3.3V ±10%
- ±8kV ESD Protection on IO to GND (JESD22-A114 HBM, Typical)
- Operating Range: 3.3V ±10%, -40°C to +85°C
- 6-Pin TSOC Package
Applications/Uses
- Authentication of Consumables
- Secure Feature Control
