zkLogin: Privacy-preserving blockchain authentication with existing credentials

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You can find the slides in this link.

  • Most users access blockchains through private key-based wallets, but traditional authentication methods like mnemonics and hardware wallets can be cumbersome, making onboarding difficult.
  • zkLogin simplifies authentication by using identity tokens from platforms like Google or Facebook.
  • Instead of managing new secrets, users sign in with their existing accounts, while zero-knowledge proofs ensure their off-chain and on-chain identities remain hidden.
  • Since launching on the Sui blockchain, zkLogin has processed over 7.6 million zkLogin-signed transactions.
  • These transactions include around 2.4 million unique Zero-Knowledge Proofs (as of March 14, 2025), making zkLogin one of the most widely used zkApps.