ECDSA and ECDH

[Manoj Ramachandran <Manoj.Ramachandran@xxxxxxxxxxxxxxxx>]

Hi,

 

We are planning to designing an embedded device integrating ATECC508A module for PKI support. The embedded device is planned to communicate with a host device which will be ported with FIPS compliant OpenSSL library.  Our embedded device will be using ECDSA (FIPS 186-3)  and ECDH (FIPS SP800-56A) by calling APIs of ATECC508A SDK.  Is there any compatibility issue?  

 

1.       Whether a digest signed using openssl library can be verified in our embedded module and vice-versa .

2.       We understand that, OpenSSL doesn’t have FIPS 140-2 certification for ECDH. If we use ECDH, whether we can claim our system to be FIPS 140-2 compliant?

 

Regards,

Manoj

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