Erweiterung AES/TripleDES für string <> string (Base64/UTF-8)

AMWD.Common/Utilities/CryptographyHelper.cs

@@ -72,6 +72,32 @@ namespace System.Security.Cryptography
 			return AesEncrypt(plain, password);
 		}
 
+		/// <summary>
+		/// Decrypts a Base64 string using the AES algorithm and a password to an UTF-8 string.
+		/// </summary>
+		/// <param name="cipherStr">The encrypted Base64 encoded string.</param>
+		/// <param name="password">The password to use for decryption (optional).</param>
+		/// <returns>The decrypted UTF-8 string string.</returns>
+		public string DecryptAes(string cipherStr, string password = null)
+		{
+			byte[] cipher = Convert.FromBase64String(cipherStr);
+			byte[] plain = DecryptAes(cipher, password);
+			return Encoding.UTF8.GetString(plain);
+		}
+
+		/// <summary>
+		/// Encrypts an UTF-8 string using the AES algorithm and a password to a Base64 string.
+		/// </summary>
+		/// <param name="plainStr">The UTF-8 string to encrypt.</param>
+		/// <param name="password">The password to use for encryption (optional).</param>
+		/// <returns>The encrypted Base64 encoded string.</returns>
+		public string EncryptAes(string plainStr, string password = null)
+		{
+			byte[] plain = Encoding.UTF8.GetBytes(plainStr);
+			byte[] cipher = EncryptAes(plain, password);
+			return Convert.ToBase64String(cipher);
+		}
+
 		#endregion AES
 
 		#region Triple DES
@@ -110,6 +136,38 @@ namespace System.Security.Cryptography
 			return TripleDesEncrypt(plain, password);
 		}
 
+		/// <summary>
+		/// Decrypts a Base64 encoded string using the triple DES algorithm and a password.
+		/// </summary>
+		/// <remarks>
+		/// When the <paramref name="password"/> parameter is <c>null</c>, the key from the file (set on initialize) is used instead.
+		/// </remarks>
+		/// <param name="cipherStr">The encrypted Base64 encoded string.</param>
+		/// <param name="password">The password to use for decryption (optional).</param>
+		/// <returns>The decrypted UTF-8 string.</returns>
+		public string DecryptTripleDes(string cipherStr, string password = null)
+		{
+			byte[] cipher = Convert.FromBase64String(cipherStr);
+			byte[] plain = DecryptTripleDes(cipher, password);
+			return Encoding.UTF8.GetString(plain);
+		}
+
+		/// <summary>
+		/// Encrypts an UTF-8 string using the triple DES algorithm and a password.
+		/// </summary>
+		/// <remarks>
+		/// When the <paramref name="password"/> parameter is <c>null</c>, the key from the file (set on initialize) is used instead.
+		/// </remarks>
+		/// <param name="plainStr">The UTF-8 string to encrypt.</param>
+		/// <param name="password">The password to use for encryption (optional).</param>
+		/// <returns>The encrypted Base64 encoded string.</returns>
+		public string EncryptTripleDes(string plainStr, string password = null)
+		{
+			byte[] plain = Encoding.UTF8.GetBytes(plainStr);
+			byte[] cipher = EncryptTripleDes(plain, password);
+			return Convert.ToBase64String(cipher);
+		}
+
 		#endregion Triple DES
 
 		#endregion Instance methods
@@ -176,6 +234,32 @@ namespace System.Security.Cryptography
 			return ms.ToArray();
 		}
 
+		/// <summary>
+		/// Decrypts a Base64 string using the AES algorithm and a password to an UTF-8 string.
+		/// </summary>
+		/// <param name="cipherStr">The encrypted Base64 encoded string.</param>
+		/// <param name="password">The password to use for decryption.</param>
+		/// <returns>The decrypted UTF-8 string string.</returns>
+		public static string AesDecrypt(string cipherStr, string password)
+		{
+			byte[] cipher = Convert.FromBase64String(cipherStr);
+			byte[] plain = AesDecrypt(cipher, password);
+			return Encoding.UTF8.GetString(plain);
+		}
+
+		/// <summary>
+		/// Encrypts an UTF-8 string using the AES algorithm and a password to a Base64 string.
+		/// </summary>
+		/// <param name="plainStr">The UTF-8 string to encrypt.</param>
+		/// <param name="password">The password to use for encryption.</param>
+		/// <returns>The encrypted Base64 encoded string.</returns>
+		public static string AesEncrypt(string plainStr, string password)
+		{
+			byte[] plain = Encoding.UTF8.GetBytes(plainStr);
+			byte[] cipher = AesEncrypt(plain, password);
+			return Convert.ToBase64String(cipher);
+		}
+
 		#endregion AES
 
 		#region Triple DES
@@ -236,6 +320,32 @@ namespace System.Security.Cryptography
 			return ms.ToArray();
 		}
 
+		/// <summary>
+		/// Decrypts an Base64 encoded string using the triple DES algorithm and a password.
+		/// </summary>
+		/// <param name="cipherStr">The encrypted Base64 encoded string.</param>
+		/// <param name="password">The password to use for decryption.</param>
+		/// <returns>The decrypted UTF-8 string.</returns>
+		public static string TripleDesDecrypt(string cipherStr, string password)
+		{
+			byte[] cipher = Convert.FromBase64String(cipherStr);
+			byte[] plain = TripleDesDecrypt(cipher, password);
+			return Encoding.UTF8.GetString(plain);
+		}
+
+		/// <summary>
+		/// Encrypts an UTF-8 string using the triple DES algorithm and a password.
+		/// </summary>
+		/// <param name="plainStr">The UTF-8 string to encrypt.</param>
+		/// <param name="password">The password to use for encryption.</param>
+		/// <returns>The encrypted Base64 encoded string.</returns>
+		public static string TripleDesEncrypt(string plainStr, string password)
+		{
+			byte[] plain = Encoding.UTF8.GetBytes(plainStr);
+			byte[] cipher = TripleDesEncrypt(plain, password);
+			return Convert.ToBase64String(cipher);
+		}
+
 		#endregion Triple DES
 
 		#endregion Encryption