CVE:CVE-2021-29415
CNNVD:CNNVD-202105-1366
elliptic curve cryptography hardware accelerator 存在安全漏洞，该漏洞允许攻击者恢复ECDSA操作期间使用的私有ECC密钥。
solution:Upgrade nordicsemi nrf52840_firmware to a higher version than 2021-03-29,and avoid the version (,2021-03-29]