feat: add rsa usage class

Author: selfmadecode

src/SafeCrypt.Test/Usage/RsaUsage.cs

@@ -0,0 +1,54 @@
+using SafeCrypt.Helpers;
+using SafeCrypt.RsaEncryption;
+using System.Collections;
+
+namespace safecrypt_testapp.Usage;
+
+internal class RsaUsage
+{
+    internal async void Usage()
+    {
+        // Example: Generate RSA keys
+        var rsaKeyPair = KeyGenerators.GenerateRsaKeys(2048);
+
+        string rsaPublicKey = rsaKeyPair.Item1;
+        string rsaPrivateKey = rsaKeyPair.Item2;
+
+        Console.WriteLine($"pubic key {rsaPublicKey}");
+        Console.WriteLine($"private key {rsaPrivateKey}");
+
+        // Example: Encrypt and Decrypt using RSA
+        string originalData = "Hello, RSA Encryption!";
+
+        var enModel = new RsaEncryptionParameters
+        {
+            DataToEncrypt = originalData,
+            PublicKey = rsaPublicKey,
+        };
+
+        var encryptedData = await Rsa.EncryptAsync(enModel);
+
+        Console.WriteLine($"Original Data: {originalData}");
+
+        Console.WriteLine("Original byte array: " + BitConverter.ToString(encryptedData.EncryptedData));
+        string EncryptedDataconvertedString = Convert.ToBase64String(encryptedData.EncryptedData);
+
+        byte[] convertedBytes = Convert.FromBase64String(EncryptedDataconvertedString);
+
+        Console.WriteLine("Converted back to byte array: " + BitConverter.ToString(convertedBytes));
+        bool arraysAreEqual = StructuralComparisons.StructuralEqualityComparer.Equals(encryptedData.EncryptedData, convertedBytes);
+        Console.WriteLine("Original and converted byte arrays are equal: " + arraysAreEqual);
+
+        // Decrypting
+        var decryptionModel = new RsaDecryptionParameters
+        {
+            DataToDecrypt = convertedBytes,
+            PrivateKey = rsaPrivateKey
+        };
+
+        var decryptedData = await Rsa.DecryptAsync(decryptionModel);
+        Console.WriteLine($"{decryptedData.DecryptedData}");
+
+        Console.ReadLine();
+    }
+}