如何在 ListBox 中显示字符串的散列值？

Question

我有一个项目，我必须创建自己的线性哈希、桶哈希和二次哈希算法，所以我选择对一些字符串进行哈希处理，但我运行遇到了一个小问题2 个列表框：

一个充满字符串的列表框
一个充满这些字符串的散列的列表框

我可以毫无问题地打印字符串，但是我不知道如何在单击按钮时将它们相应的散列打印到另一个 ListBox 中。

这是我的代码：

Form.cs

private void btnLinearHash_Click(object sender, EventArgs e)
{
    // Initialize Hash.cs (see below for code)
    Hash.LinearHash linearHash = new Hash.LinearHash();
    RandomArrayGen randGen = new RandomArrayGen();

    // Clear both ListBoxes
    lbHashStrings.Items.Clear();
    lbHashesOfStrings.Items.Clear();

    for (int i = 0; i < 12; i++)
    {
        // Generate 12 random upper and lowercase strings using RandomArrayGen.cs (see https://pastebin.com/jRsG5r1E)
        lbHashStrings.Items.Add(randGen.GenRandomStrings(12, true, true));
    }

    for (int i = 0; i < lbHashStrings.Items.Count; i++)
    {
    // Generate a hash of a string and store it into a Dictionary (see Hash.cs)
    linearHash.GenerateHashOfString(lbHashStrings.Items[i].ToString());
    lbHashesOfStrings.Items.Add(linearHash.FindHashCodeInDictionary(lbHashStrings.Items[i].ToString()));
    }
}

Hash.cs

    public class LinearHash
    {
        private Dictionary<byte[], string> linearHashArray = new Dictionary<byte[], string>();
        private byte[] hashCode;

        public void GenerateHashOfString(string stringToHash)
        {
            hashCode = Encoding.ASCII.GetBytes(stringToHash);

            linearHashArray.Add(hashCode, stringToHash);
        }

        public string FindHashCodeInDictionary(string StringToFind)
        {
            byte[] HashOfStringToFind = Encoding.ASCII.GetBytes(StringToFind);

            //For some reason, this keeps returning false
            foreach (var keyPairValue in linearHashArray)
            {
                if ((linearHashArray.ContainsKey(HashOfStringToFind) && linearHashArray.ContainsValue(StringToFind))
                {
                    return Encoding.UTF8.GetString(HashOfStringToFind);
                }
            }
            return "Hash not found";
        }
    }

所以，我的问题是：我做错了什么？为什么 Hash.cs 中的 foreach 返回 false？

Answer 1

我通过使用 BitConverter.ToString(hashToConvert).Replace("-", string.Empty); 转换 Byte[] 解决了我的问题。

Hash.cs

    public void GenerateHashOfString(string stringToHash)
    {
        hashCode = Encoding.ASCII.GetBytes(stringToHash);
    ==> hashCodeInStringForm = BitConverter.ToString(hashCode).Replace("-", string.Empty);

        linearHashArray.Add(hashCode, stringToHash);
    }

    public string FindHashCodeInDictionary(string StringToFind)
    {
    byte[] HashOfStringToFind = Encoding.ASCII.GetBytes(StringToFind);

    foreach (var hashCode in linearHashArray)
    {
        if (!linearHashArray.ContainsKey(HashOfStringToFind) && !linearHashArray.ContainsValue(StringToFind))
        {
        return "String and hash not found in array";
        }
    }
    return hashCodeInStringForm;
    }

如何在 ListBox 中显示字符串的散列值？

How do I show the hash of a string in a ListBox?

c#

hash

winforms

string-hashing

Form.cs

Hash.cs

Hash.cs