Stealth Address Optimization

Performance and Parsing Considerations

Identifying stealth transactions on Solana involves computationally intensive cryptographic operations, as recipients must scan the blockchain to detect funds sent to their stealth addresses. Without optimizations, this process can become resource-heavy, leading to inefficiencies in transaction parsing.

To mitigate this, KION leverages an optimization technique using View Tags, which improves performance while maintaining a high level of security.

Optimization with View Tags

Efficiency Gains

Instead of performing full decryption on every transaction, the system first computes an elliptic curve multiplication and a hash function to generate a lightweight View Tag.

• This tag acts as a quick filter, allowing the recipient to determine whether further cryptographic operations are necessary.

• If the View Tag does not match, the system can immediately discard the transaction, skipping unnecessary computations.

• This dramatically reduces the number of elliptic curve operations performed during transaction scanning.

Trade-Off: Accuracy vs. Performance

While View Tags optimize efficiency, they introduce a minor trade-off:

• The View Tag is 1 byte (8 bits), meaning there are 256 possible values.

• This results in a 1/256 chance of a false positive, where an unrelated transaction might pass the initial filter.

• However, the reduction in computational workload far outweighs the cost of handling occasional false positives.

Overall Impact

By integrating View Tags, KION enhances the scalability of stealth transaction parsing while preserving privacy and security. Users benefit from:

• Faster scanning times with minimal impact on blockchain performance.

• Lower computational requirements, making stealth transactions more practical for everyday use.

• Improved user experience by reducing delays in detecting and accessing received funds.

This approach ensures that privacy-preserving transactions remain lightweight and scalable, making KION an efficient solution for private payments on Solana.