Attaching the keys from the picture: *7.1.2.1 P-256 Data Set 1* *Private A*: 3f49f6d4 a3c55f38 74c9b3e3 d2103f50 4aff607b eb40b799 5899b8a6 cd3c1abd *Private B*: 55188b3d 32f6bb9a 900afcfb eed4e72a 59cb9ac2 f19d7cfb 6b4fdd49 f47fc5fd *Public A(x):* 20b003d2 f297be2c 5e2c83a7 e9f9a5b9 eff49111 acf4fddb cc030148 0e359de6 *Public A(y)*: dc809c49 652aeb6d 63329abf 5a52155c 766345c2 8fed3024 741c8ed0 1589d28b *Public B(x)*: 1ea1f0f0 1faf1d96 09592284 f19e4c00 47b58afd 8615a69f 559077b2 2faaa190 *Public B(y)*: 4c55f33e 429dad37 7356703a 9ab85160 472d1130 e28e3676 5f89aff9 15b1214a *DHKey*: ec0234a3 57c8ad05 341010a6 0a397d9b 99796b13 b4f866f1 868d34f3 73bfa698

пн, 22 черв. 2020 о 16:33 mbed-tls-request@lists.trustedfirmware.org пише:

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Today's Topics:

1. ECDH set custom private key (Oleksandr Nychyporuk)

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Message: 1 Date: Mon, 22 Jun 2020 16:33:15 +0300 From: Oleksandr Nychyporuk olexandr.nychyporuk@gmail.com To: mbed-tls@lists.trustedfirmware.org Subject: [mbed-tls] ECDH set custom private key Message-ID: <CAAjyQQ4kQ8J-iVSV_yputKD83G9Aj65fYEWJ= ObPTeptXogghw@mail.gmail.com> Content-Type: text/plain; charset="utf-8"

Hi,

I wanna configure the ECDH algorithm to repeat the following keys: [image: image.png]

I was able to configure the algorithm, generate private and public keys on both: client and server sides. And it works as expected. The secret keys are equal on both sides. But I did not manage to calculate the secret key that is on the picture. I do not know how to set these private keys. Could someone help me to do that?

Thanks,