Initial

MareSynchronos/Utils/Crypto.cs

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+using System.Security.Cryptography;
+using System.Text;
+
+namespace MareSynchronos.Utils;
+
+public static class Crypto
+{
+#pragma warning disable SYSLIB0021 // Type or member is obsolete
+
+    private static readonly SHA256CryptoServiceProvider _sha256CryptoProvider = new();
+
+    public static string GetFileHash(this string filePath)
+    {
+        using SHA1CryptoServiceProvider cryptoProvider = new();
+        return BitConverter.ToString(cryptoProvider.ComputeHash(File.ReadAllBytes(filePath))).Replace("-", "", StringComparison.Ordinal);
+    }
+
+    public static string GetHash256(this string stringToHash)
+    {
+        return GetOrComputeHashSHA256(stringToHash);
+    }
+
+    private static string GetOrComputeHashSHA256(string stringToCompute)
+    {
+        return BitConverter.ToString(_sha256CryptoProvider.ComputeHash(Encoding.UTF8.GetBytes(stringToCompute))).Replace("-", "", StringComparison.Ordinal);
+    }
+#pragma warning restore SYSLIB0021 // Type or member is obsolete
+}