C# Keccak256 Solidity

ErenTl answered on September 13, 2022 Popularity 1/10 Helpfulness 1/10

answer C# Keccak256 Solidity

C# Keccak256 Solidity

Comment

using System;
using System.Linq;
using Org.BouncyCastle.Crypto.Digests;

namespace myNamespace
{
    public static class TransactionTool
    {
        public static string GetTransactionHash(string rawTransaction)
        {
            var offset = rawTransaction.StartsWith("0x") ? 2 : 0;

            var txByte = Enumerable.Range(offset, rawTransaction.Length - offset)
                             .Where(x => x % 2 == 0)
                             .Select(x => Convert.ToByte(rawTransaction.Substring(x, 2), 16))
                             .ToArray();

            //Note: Not intended for intensive use so we create a new Digest.
            //if digest reuse, prevent concurrent access + call Reset before BlockUpdate
            var digest = new KeccakDigest(256);

            digest.BlockUpdate(txByte, 0, txByte.Length);
            var calculatedHash = new byte[digest.GetByteLength()];
            digest.DoFinal(calculatedHash, 0);

            var transactionHash = BitConverter.ToString(calculatedHash, 0, 32).Replace("-", "").ToLower();

            return transactionHash;
        }
    }
}

Popularity 1/10 Helpfulness 1/10 Language csharp

Source: ethereum.stackexchange.com

Tags: c# solidity

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