private static void ComputeMd5Hash()
{
var image = File.ReadAllBytes("Files/image.jpg");
var sourceCode = File.ReadAllBytes("Files/SourceCode.cs");
var wordDoc = File.ReadAllBytes("Files/word_doc.docx");
var imageHash = HashUtil.Md5Hash(image);
var sourceHash = HashUtil.Md5Hash(sourceCode);
var wordDocHash = HashUtil.Md5Hash(wordDoc);
Console.WriteLine($"image -> {imageHash}");
Console.WriteLine($"source -> {sourceHash}");
Console.WriteLine($"doc file -> {wordDocHash}");
}
public static CollisionResult FindCollision(string hash, int bitLength)
{
for (long i = 0; i < long.MaxValue; i++)
{
var byteContent = BitConverter.GetBytes(i);
var testHash = HashUtil.GetHash(byteContent, bitLength);
if (testHash == hash)
{
var text = Convert.ToBase64String(byteContent);
return(new CollisionResult(text, i + 1));
}
}
return(new CollisionResult());
}
private static void ComputeStringHash()
{
while (true)
{
Console.WriteLine("Input text:");
var text = Console.ReadLine();
if (text.Trim() == "exit")
{
break;
}
Console.WriteLine("Input bit length (2, 4, 8):");
var bitLength = Console.ReadLine();
var hash = HashUtil.GetHash(Encoding.UTF8.GetBytes(text), int.Parse(bitLength));
Console.WriteLine($"Hash: {hash}");
}
}
