Ethereum Foundation to Enforce 128-Bit Encryption Standard in 2026

Ethereum Foundation shifts focus to cryptographic security after clearing proof performance bottlenecks, setting non-negotiable Layer 1 standards and a structured tool release roadmap.

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Summary

On December 18, the Ethereum Foundation announced that it has resolved proof performance bottlenecks and will concentrate on security enhancements. Due to breaches in certain mathematical conjectures, the foundation set 128-bit proof security as a mandatory standard for Ethereum’s Layer 1. The roadmap includes the release of the 'soundcalc' tool by February 2026 to aid cryptographic safety, along with staged size and security targets planned by the end of 2026.

Terms & Concepts
  • 128-bit encryption: A cryptographic security standard using 128-bit keys, offering strong protection against brute-force attacks.
  • zkEVM (zero-knowledge Ethereum Virtual Machine): A blockchain technology enabling Ethereum-compatible smart contracts with privacy-preserving zero-knowledge proofs.
  • Formal verification: A mathematical process used to prove the correctness of cryptographic protocols or smart contracts.