Memory & Bus Protector IP Core

The Memory & Bus Protector IP Core module enables on-the-fly encryption/decryption and authentication to the external memory.

It supports AHB/AXI slave/master interfaces, APB port for configuration purpose, and contains a cache. It is typically placed between the processor(s) and an external memory controller (DDRx). This IP Core improves tamper resistance by avoiding any modification, spoofing or analysis of external data.


  • Protect the external memory
  • On-the-fly encryption/decryption and authentication
  • Transparent for the processor
  • Scalable data bus width (32, 64, 128 bits)
  • AMBA Master/Slave interfaces
  • Supports all key sizes (128/192/256 bits)
  • Scalable internal Cache
  • ASIC and FPGA


  • Embedded security processor
  • Secure payment


Implementation aspects

The processor can securely and transparently write/read data or code from external memory. It leverages the AES Core from Silex Insight. The unique architecture enables a high level of flexibility (cache size, performances) and allows it to be used by microcontroller and multi-core architectures. The features required by a specific application can be taken into account in order to select the most optimal configuration for any FPGA or ASIC technology.

Reference: BA432b