Aggregators

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💡 Aggregators play a crucial role in handling diverse signature schemes used by different smart contract wallets.

Why Aggregators are Important

1. Signature Scheme Diversity: Different smart contract wallets use various signature schemes.
2. Efficient Validation: Aggregating UserOperations with the same scheme allows for separate, more efficient validations.
3. Gas Optimization: On-chain cryptographic arithmetic can be gas-intensive. Signature schemes supporting aggregation can significantly reduce gas costs during on-chain validation.

Key Functions of Aggregators

Aggregators primarily use two essential functions:

1. aggregateSignatures

• Input: An array of UserOperations
• Output: An aggregated signature using a specific scheme
• Purpose: Combines multiple signatures into a single, compact representation

2. validateSignatures

• Input:
  • An array of UserOperations
  • The aggregated signatures
• Purpose: Verifies the validity of the aggregated signatures against the provided UserOperations

Benefits of Aggregation

1. Gas Efficiency: Reduces the overall gas cost for validating multiple transactions
2. Scalability: Enables processing of more transactions within the same gas limits
3. Flexibility: Accommodates different signature schemes used by various smart contract wallets