Public Report – VPN by Google One Security Assessment

During the summer of 2022, Google engaged NCC Group to conduct a security assessment of VPN by Google One. VPN by Google One is a service that increases connection security and privacy to end users. Google provides several clients covering the most widely used operating systems; these VPN clients provide both encrypted transit and IP … Continue reading Public Report – VPN by Google One Security Assessment

Public Report – Confidential Space Security Review

During the summer of 2022, Google engaged NCC Group to conduct a security assessment of the Confidential Space product. The system provides a confidential computing environment that allows cloud customers to run workloads in the cloud that can be attested to run a specific payload with high assurances that the workload was not and cannot … Continue reading Public Report – Confidential Space Security Review

Public Report – IOV Labs powHSM Security Assessment

In June 2022, IOV Labs engaged NCC Group to perform a review of powHSM. Per the project documentation: "Its main role is to safekeep and prevent the unauthorized usage of each of the powPeg's members' private keys. powHSM is implemented as a pair of applications for the Ledger Nano S, namely a UI and a Signer, … Continue reading Public Report – IOV Labs powHSM Security Assessment

Public Report – Threshold ECDSA Cryptography Review

In March 2022, DFINITY engaged NCC Group to conduct a security and cryptography review of a threshold ECDSA implementation, which follows a novel approach described in the reference paper entitled "Design and analysis of a distributed ECDSA signing service" and available on the IACR ePrint archive at https://eprint.iacr.org/2022/506. The threshold ECDSA protocol will be deployed into … Continue reading Public Report – Threshold ECDSA Cryptography Review

Public Report – Lantern and Replica Security Assessment

Editor's Note: This security assessment was conducted by a team of our consultants, one of whom, Victor Hora, tragically and unexpectedly passed away a few weeks ago. As we publish this report, we miss our dear colleague immensely and celebrate Victor's life and his wonderful influence on the world. He was a talented security consultant, … Continue reading Public Report – Lantern and Replica Security Assessment

Public Report – go-cose Security Assessment

In April and May 2022, NCC Group Cryptography Services engaged in a security and cryptography assessment reviewing Microsoft's contributions to the go-cose library, a Go library implementing signing and verification for CBOR Object Signing and Encryption (COSE), as specified in RFC 8152. This library focuses on a minimal feature set to enable the signing and verification of … Continue reading Public Report – go-cose Security Assessment

Public Report – Google Enterprise API Security Assessment

During the autumn of 2021, Google engaged NCC Group to perform a review of the Android 12 Enterprise API to evaluate its compliance with the Security Technical Implementation Guides (STIG) matrix provided by Google. This assessment was also performed with reference to the Common Criteria Protection Profile for Mobile Device Fundamentals (PPMDF), from which the … Continue reading Public Report – Google Enterprise API Security Assessment

Public Report – WhatsApp End-to-End Encrypted Backups Security Assessment

During the summer of 2021, WhatsApp engaged NCC Group's Cryptography Services team to conduct an independent security assessment of its End-to-End Encrypted Backups project. End-to-End Encrypted Backups is an hardware security module (HSM) based key vault solution that aims to primarily support encrypted backup of WhatsApp user data. This assessment was performed remotely, as a … Continue reading Public Report – WhatsApp End-to-End Encrypted Backups Security Assessment

Public Report – Protocol Labs Groth16 Proof Aggregation: Cryptography and Implementation Review

During April 2021, Protocol Labs engaged NCC Group’s Cryptography Services team to conduct a cryptography and implementation review of the Groth16 proof aggregation functionality in the bellperson and two other related GitHub repositories. This code utilizes inner product arguments to efficiently aggregate existing Groth16 proofs while re-using existing powers of tau ceremony transcripts. Full source … Continue reading Public Report – Protocol Labs Groth16 Proof Aggregation: Cryptography and Implementation Review

Public Report – Dell Secured Component Verification

During February 2021, Dell engaged NCC Group to conduct a security assessment of their supply chain security functionality and related and supportive foundational security functionality on 14th and 15th generation Dell servers. Documentation and source code was provided as well as access to a running lab server via network access, with access to both the … Continue reading Public Report – Dell Secured Component Verification