## OverviewStatus: OpenProject Type: Traditional: One applicant is selected to work on the task.Time Commitment: DaysExperience Level: IntermediateSize: USD 2'000 in ICP## DescriptionSince the Internet Computer allows canisters to sign Ethereum transactions, there's a need to hash those transactions. This is currently not directly possible in canisters written in Motoko. and a workaround like calling the [EVM utility canister](https://forum.dfinity.org/t/assigned-icdevs-org-bounty-28-evm-utility-canister-6-000/17880) has to be used.In this bounty, you will implement two cryptographic hashing algorithms in Motoko. Keccak-256 is the hashing algorithm used for signing Ethereum transactions. It is similar to the standardized SHA-3 but uses a different padding. Hence, it makes sense to include both variations, although the official SHA-3 is not used in Ethereum.## Acceptance Criteria- Implementation with tests- [Meaningful readme](https://github.com/dfinity/grant-rfps/blob/main/repo-checklist.md) with usage example - Open Source license (e.g. MIT)- Available in the [mops package manager](https://mops.one/)## How to apply? - Include links to previous relevant work.- Include a brief overview of how you will complete the task.- Give an estimated timeline for completing the task.- Post your application text in [this thread](https://forum.dfinity.org/t/open-dfinity-bounty-4-keccak-256-and-sha3-motoko-library-2000-in-icp/18469)## References### SHA-3 and Keccak implementations- https://github.com/ethereum/eth-hash- https://github.com/RustCrypto/hashes/tree/master/sha3### Examples of cryptographic hashing libraries in Motoko- https://github.com/timohanke/motoko-sha2- https://github.com/aviate-labs/crypto.mo- https://github.com/tgalal/motoko-bitcoin

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