frostfs-sdk-csharp/sdk/src/FrostFS.SDK.Cryptography/ArrayHelper.cs

using System.Runtime.CompilerServices;

namespace FrostFS.SDK.Cryptography
{
    internal static class ArrayHelper
    {
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static byte[] Concat(params byte[][] buffers)
        {
            int length = 0;
            for (int i = 0; i < buffers.Length; i++)
                length += buffers[i].Length;
            byte[] dst = new byte[length];
            int p = 0;
            foreach (byte[] src in buffers)
            {
                Buffer.BlockCopy(src, 0, dst, p, src.Length);
                p += src.Length;
            }

            return dst;
        }
    }
}