ChaCha20-Poly1305 Crypto Engine

The ChaCha20-Poly1305 Crypto Engine is RFC7539 compliant to provide Authenticated Encryption with Associated Data (AEAD) using the ChaCha20 stream cipher combined with the Poly1305 message-authentication code.



The ChaCha20-Poly1305 Crypto Engine is available for ASIC and FPGA, with simple interfaces and easy to integrate. It supports a wide range of applications on various technologies. The IP Core can be combined with scatter/gather DMA and AMBA interfaces (AHB/AXI) enabling multi-Gbps throughput in SoC solutions.

This Crypto Engine is also available in the eSecure IP solution (BA470).


  • ASIC and FPGA
  • Fully compliant with RFC7539
  • Supports authentication and encryption mode (AEAD)
  • Supports stand-alone encryption/decryption (ChaCha20)
  • Supports stand-alone authentication (Poly1305)
  • Context switching
  • AMBA AHB/AXI bridges (with optional scatter/gather DMA)
  • Low power features
  • Key generation for Poly1305
    • ChaCha20
    • Dedicated input
  • Full synchronous design


    • TLS/DTLS
    • OpenSSH
    • IPsec

For Crypto Engine targeting high-performance applications, where a high throughput is required (up to several hundred of Gbps), see our ChaCha20-Poly1305 Multi-Booster (BA420)

Reference: BA417