How Trail of Bits helps verify the integrity of Signal chats
Signal has introduced Automatic Key Verification to ensure the integrity of encrypted chats, with Trail of Bits serving as an independent auditor. This system helps prevent man-in-the-middle attacks by ensuring a globally consistent view of public keys.
Why it matters
It enhances the security and trustworthiness of private messaging platforms by automating complex cryptographic verification processes.
cryptography , audits , open-source Page content How key verification works What our auditor does How to use Automatic Key Verification Why we’re doing this Every Signal chat starts the same way: the client asks the Signal server for the public key associated with your contact’s phone number. But how do you know the server gave you the right key? A compromised server could provide a false public key, allowing the client to encrypt messages to an attacker rather than the intended recipient.
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