Merge pull request selfmadecode#9 from selfmadecode/dev_raphael_aes

merge raphael aes into dev
eanolue · Apr 15, 2023 · 1fab22a · 1fab22a
2 parents 78aac96 + 469aaaf
commit 1fab22a
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Showing 2 changed files with 29 additions and 4 deletions.
diff --git a/Encrypt/AesEncryption/AesEncryption.cs b/Encrypt/AesEncryption/AesEncryption.cs
@@ -9,6 +9,9 @@ public class AesEncryption : BaseAesEncryption
         public byte[] AesEncrypt(byte[] data, byte[] secretKey, byte[] iv)
             => EncryptAES(data, secretKey, iv);
 
+        public byte[] AesDecrypt(byte[] data, byte[] secretKey, byte[] iv)
+            => DecryptAES(data, secretKey, iv);
+
         public byte[] AesEncrypt(string data, string secretKey, string iv)
         {
             NullChecks(data, secretKey, iv);

diff --git a/Encrypt/AesEncryption/BaseAesEncryption.cs b/Encrypt/AesEncryption/BaseAesEncryption.cs
@@ -34,10 +34,32 @@ public virtual byte[] EncryptAES(byte[] data, byte[] key, byte[] iv)
             }
         }
 
-        // Method to generate a random byte array of given length
-        // Used to get the IV
-        // Generate a random 16-byte IV for AES in CBC mode
-        public static byte[] GenerateRandomBytes(int length)
+        // Method to decrypt data using AES algorithm
+        public static byte[] DecryptAES(byte[] encryptedData, byte[] key, byte[] iv)
+        {
+            using (Aes aes = Aes.Create())
+            {
+                aes.Key = key;
+                aes.IV = iv;
+                ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);
+                using (MemoryStream memoryStream = new MemoryStream(encryptedData))
+                {
+                    using (CryptoStream cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
+                    {
+                        using (MemoryStream decryptedStream = new MemoryStream())
+                        {
+                            cryptoStream.CopyTo(decryptedStream);
+                            return decryptedStream.ToArray();
+                        }
+                    }
+                }
+            }
+        }
+
+            // Method to generate a random byte array of given length
+            // Used to get the IV
+            // Generate a random 16-byte IV for AES in CBC mode
+            public static byte[] GenerateRandomBytes(int length)
         {
             byte[] randomBytes = new byte[length];
             using (RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider())