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ChaCha20 family of accelerators.

Available in 3 configurations / performance grades.

Supporting TLS1.3 IoT HomeKit.

Product description

The ChaCha-IP-13 is a family of the cryptographic library elements in Inside Secure’s HW IP library. For example, the ChaCha-IP-13 is the cipher core embedded in the Vault-IP-140 platform security engines providing support for TLS1.3 and HomeKit IoT applications (ChaCha20 is also available as SW implementation in Vault-IP-140). The accelerators include I/O registers, encryption and decryption cores, and the logic for feedback modes and key scheduling.

Sustained performance for any object sizes ranges from 2Gbps to 12.8Gbps depending on the configuration and area. Gate count is around 30K gates depending on the configuration.

Inside Secure also offers the required Poly1305 algorithm to match the ChaCha20 cipher in HomeKit.

ChaCha-IP-13 3GPP cipher accelerators scheme
Other information

Key benefits:

  • Silicon-proven implementation.
  • Fast and easy to integrate into SoCs.
  • Flexible layered design.
  • Complete range of configurations.
  • World-class technical support.


  • Wide bus interface (512 bit data, 256 bit keys) or 32 bit register interface.
  • Key sizes: 128 and 256 bits.
  • Includes key scheduling hardware.
  • Feedback mode CTR. 

  • Low speed (High Frequency), Medium Speed, High Speed versions.
  • Fully synchronous design.