https://github.com/zemse/poseidon2-evm

Poseidon2 hash function implemented in Solidity
https://github.com/zemse/poseidon2-evm

evm huff poseidon2 solidity yul

Last synced: 12 days ago
JSON representation

Poseidon2 hash function implemented in Solidity

• Host: GitHub
• URL: https://github.com/zemse/poseidon2-evm
• Owner: zemse
• License: mit
• Created: 2024-04-06T09:04:22.000Z (10 months ago)
• Default Branch: main
• Last Pushed: 2024-05-10T05:27:50.000Z (9 months ago)
• Last Synced: 2024-11-11T07:02:57.575Z (2 months ago)
• Topics: evm, huff, poseidon2, solidity, yul
• Language: Solidity
• Homepage:
• Size: 68.4 KB
• Stars: 3
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# poseidon2 for evm

implementations of poseidon2 hash function (https://eprint.iacr.org/2023/323.pdf) in solidity, yul and huff.

## usage

the `Poseidon2` contract needs to be deployed on the network and then you can make calls to it. here is an example to hash two field elements:

```solidity

contract MyContract {

    function myFunction() external returns (uint256) {

        uint256 result = 0xPoseidon2ContractAddress.call(

            abi.encode(

                0x1762d324c2db6a912e607fd09664aaa02dfe45b90711c0dae9627d62a4207788,

                0x1047bd52da536f6bdd26dfe642d25d9092c458e64a78211298648e81414cbf35

            )

        );

        return result;

    }

}

```

## benchmarks

### huff

gas cost for hashing one, two or three elements: 16949 

### yul benchmarks

gas cost for hasing one, two or three elements: 27517

### solidity benchmarks

| num elements | est gas   |

|--------------|-----------|

| hash_1       | 219544    |

| hash_2       | 220018    |

| hash_3       | 220641    |

| hash 4       | 416486    |

| hash 5       | 417197    |

| hash 6       | 417952    |

| hash 7       | 604599    |

| hash 8       | 605311    |

| hash 9       | 606064    |

| hash 10      | 792604    |