Job Description

We are looking for an experienced cryptography professional to review a protocol specification (two-party, three-message, signature-based, hardware-backed keys on iOS and Android). The protocol uses standard primitives only: ECDSA over P-256, SHA-256. No new cryptography; the task is to provide a competent second opinion on whether the construction is sound and to answer six specific questions in writing. This is not an open-ended audit or a penetration test. It is a single piece of contract work with a short mutual NDA. The applicant should have publication or professional protocol-review experience. Deliverables are written answers to six questions. Apply via email for scope, timing, and required input.