Ethereum post-quantum upgrade via signature aggregation
The guest argued that Ethereum can transition to post-quantum cryptography without a performance hit by using hash-based SNARKs to aggregate individual signatures into a single master proof.
The argument
The guest explained that standard NIST post-quantum signatures are too large for blockchain batch transactions. By using hash-based SNARKs to prove knowledge of multiple signatures, the execution layer can compress transaction data, potentially increasing scalability relative to the current ECDSA standard.
The thesis, stress-tested
✓ What validates it
- ✓Successful deployment of the Poseidon hash function on Ethereum testnets
- ✓Formal mathematical verification of the cryptographic code by AI tools
▸ Risks discussed
- ▸Complexity of implementing new cryptographic objects
- ▸Potential vulnerabilities in the newer Poseidon hash function compared to legacy standards
Hear it yourself
"The smallest NIST standardized post quantum signature is Falcon, which is six sixty six bytes, more than 10 times larger. And so if you were to naively swap out ECDSA for something that is post quantum secure without increasing the block size, your throughput is gonna go down roughly 10 x."
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