How to support group X25519 using qat_hw and qat_sw in my own SSL/TLS server application? Many thanks in advance.

[Syllinia]

I'd like to support group X25519 using qat_hw and qat_sw in my own SSL/TLS server as Google.com does. openssl s_client -cipher kEECDH -curves X25519 -tls1_3 -connect www.google.com:443 To be more precise, in Client Hello, there are 2 extensions, x25519 in supported groups and key share. In Server Hello, extension key_share uses Group x25519.

I've already succeeded to achieve it with openssl-1.1.1a and without QAT using the following code. SSL_CTX_set1_curves_list(sc->ctx, "X25519:prime256v1");

Currently, I'd like to support the similar feature with QAT and my code already contains QAT engine loading process such as ENGINE_set_default() and various ENGINE_ctrl_cmd_string(). So I have two questions: 1.Does QAT supports my above requirement? 2.If the answer to question 1 is yes, which API should I add extrally?

Thanks, Syllinia

[Yogaraj-Alamenda]

Not sure if I understand your question correctly, But please refer qat_evp.c and qat_hw_ecx.c for X25519 implementation in qat_engine. If you are looking Driver API for offloading X25519 operation its cpaCyEcMontEdwdsPointMultiply()

[Syllinia]

Not sure if I understand your question correctly, But please refer qat_evp.c and qat_hw_ecx.c for X25519 implementation in qat_engine. If you are looking Driver API for offloading X25519 operation its cpaCyEcMontEdwdsPointMultiply()

Thanks for your information.