---
id: 1327
title: "The cryptography behind electronic passports"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2025/10/31/the-cryptography-behind-electronic-passports/"
published_at: "2025-10-31 11:00"
tags: ["cryptography", "privacy", "threat-modeling", "zero-knowledge", "e-passport", "emrtd"]
phying_url: "https://phying.com/item/1327"
lang: en
---

# The cryptography behind electronic passports

## Summary

How electronic passports use cryptography to block forgery, eavesdropping, and cloning, where legacy protocols like BAC fall short, and what this means for zero-knowledge identity proofs.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2025-10-31 11:00
- **Original:** https://blog.trailofbits.com/2025/10/31/the-cryptography-behind-electronic-passports/
- **Phying News:** https://phying.com/item/1327