Using Ocrypto

Table of Contents

• Overview
• Limitations
  • Licensed Devices
  • Licensed Algorithms
• API Examples
• Additional Information

Overview

Ocrypto is a lightweight software crypto implementation by Oberon.

Limitations

Licensed Devices

The Ocrypto library is only licensed to be used with:

• RA0E1
• RA0E2
• RA0L1
• RA2E1
• RA2E2
• RA2L1

Licensed Algorithms

Below is a table that lists the Ocrypto algorithms licensed for use with RA FSP. Consider this table when referencing the below section - Additional Information

Algorithm	API Header Files
SHA (224, 256, 384, 512)	ocrypto_sha224.h ocrypto_sha256.h ocrypto_sha384.h ocrypto_sha512.h
HMAC (SHA256, SHA512)	ocrypto_hmac_sha256.h ocrypto_hmac_sha512.h
AES-CMAC	ocrypto_aes_cmac.h
AES (CTR, CBC, ECB, GCM)	ocrypto_aes_cbc.h ocrypto_aes_cbc_pkcs.h ocrypto_aes_ctr.h ocrypto_aes_ecb.h ocrypto_aes_gcm.h ocrypto_aes_key.h
ECDSA / Deterministic ECDSA (P256)	ocrypto_ecdsa_p256.h ocrypto_ecdsa_p256_det_sign.h
ECDH (P256)	ocrypto_ecdh_p256.h

API Examples

Ocrypto Library Examples

For examples of how to use Ocrypto APIs, see Ocrypto test code under ra/oberon/ocrypto/tests/. These tests are not meant to be built or run in FSP and have been compiled out by the macro OCRYPTO_REFERENCE_TEST_CODE_DOES_NOT_BUILD by default.

Additional Information

Document	Summary
Ocrypto - Side Channel Safety Statement	Side Channel Safety Statement for the Oberon Ocrypto stack
Ocrypto - Function Overview	Function Overview for the Oberon Ocrypto stack