nrf_oberon crypto library

The nrf_oberon library contains a collection of cryptographic algorithms created by Oberon Microsystems, licensed to Nordic Semiconductor ASA for redistribution. The library provides highly optimized software for Nordic Semiconductor SoCs based on Cortex-M0, Cortex-M4, and Cortex-M33 architectures.

Supported cryptographic algorithms


  • ChaCha20-Poly1035

  • ECDH using curve NIST secp256r1

  • ECDSA sign and verify using curve NIST secp256r1

  • Ed25519

  • HKDF using SHA-256 and SHA-512

  • HMAC using SHA-256 and SHA-512

  • RSA PKCS#1 v1.5 and v2.1 (1024, 2048 bits)

  • SHA-256

  • SHA-512

  • SRP

  • SRTP

Initializing the library

The library does not require any initialization before the APIs can be used, although some APIs require calling specific initialization functions before use.

nrf_oberon crypto library

nrf_oberon crypto library