cve/2021/CVE-2021-29415.md

### [CVE-2021-29415](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29415)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The elliptic curve cryptography (ECC) hardware accelerator, part of the ARM® TrustZone® CryptoCell 310, contained in the NordicSemiconductor nRF52840 through 2021-03-29 has a non-constant time ECDSA implemenation. This allows an adversary to recover the private ECC key used during an ECDSA operation.

### POC

#### Reference
- https://eprint.iacr.org/2021/640

#### Github
No PoCs found on GitHub currently.