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
AES CTR, EAX, GCM
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.
Mbed TLS integration
Starting from version 3.0.5, the nrf_oberon library contains a companion library that provides Mbed TLS integration for select features. This must be used with the Nordic Security Module.
Supported features
The supported features for the Mbed TLS companion library are:
AES (all ciphers, all key sizes)
AES CCM
CMAC
ECDSA (secp224r1 and secp256r1 only)
ECDH (secp224r1 and secp256r1 only)
ECJPAKE (secp224r1 and secp256r1 only)
SHA-1
SHA-256
PSA driver integration
Starting from version 3.0.9, the nrf_oberon library contains a companion library that provides PSA driver integration for select features. This must be used with the Nordic Security Module.
Supported features
The supported features for the PSA driver companion library are:
AES CTR/CBC/ECB/CCM/GCM (all key sizes)
ChaCha20 and Poly1305 (256 bit keys)
ECDSA (secp224r1 and secp256r1 only)
ECDH (secp224r1 and secp256r1 only)
SHA-1
SHA-224
SHA-256
SHA-512