update readme and test

Author: myloveCc

README.md

@@ -53,11 +53,24 @@ Install-Package NETCore.Encrypt -Version 2.0.0
     ```
 
   ## RSA
+
+  - #### Enum RsaSzie
+
+    ```csharp
+     public enum RsaSize
+    {
+        R2048=2048,
+        R3072=3072,
+        R4096=4096
+    }
+    ```
 
-  - #### Create RSA Key
+  - #### Create RSA Key with RsaSize(update at version 2.0.1)
 
     ```csharp
-    var rsaKey = EncryptProvider.CreateRsaKey();
+    var rsaKey = EncryptProvider.CreateRsaKey();    //default is 2048
+
+	// var rsaKey = EncryptProvider.CreateRsaKey(RsaSize.R3072);
 
     var publicKey = rsaKey.PublicKey;
     var privateKey = rsaKey.PrivateKey;
@@ -81,6 +94,13 @@ Install-Package NETCore.Encrypt -Version 2.0.0
 
     var decrypted = EncryptProvider.RSADecrypt(privateKey, encryptedStr);
     ```
+
+  - #### RSA from string (add at version 2.0.1)
+
+    ```csharp
+    var privateKey = rsaKey.PrivateKey;
+    RSA rsa = EncryptProvider.RSAFromString(privateKey);
+    ```
 
   ## MD5
 

src/NETCore.Encrypt/Internal/RsaSize.cs

@@ -6,7 +6,6 @@ namespace NETCore.Encrypt
 {
     public enum RsaSize
     {
-        R1024=1024,
         R2048=2048,
         R3072=3072,
         R4096=4096

test/NETCore.Encrypt.Tests/RSA_Tests.cs

@@ -9,11 +9,14 @@ namespace NETCore.Encrypt.Tests
     public class RSA_Tests
     {
 
-        [Fact(DisplayName = "Create rsa key test")]
-        public void Create_RSAKey_Test()
+        [Theory]
+        [InlineData(RsaSize.R2048)]
+        [InlineData(RsaSize.R3072)]
+        [InlineData(RsaSize.R4096)]
+        public void Create_RSAKey_Test(RsaSize size)
         {
             //Act
-            var rsaKey = EncryptProvider.CreateRsaKey();
+            var rsaKey = EncryptProvider.CreateRsaKey(size);
 
             //Assert
             Assert.NotNull(rsaKey);
@@ -23,10 +26,14 @@ public void Create_RSAKey_Test()
             Assert.NotEmpty(rsaKey.Modulus);
         }
 
-        [Fact(DisplayName = "Rsa encrypt success")]
-        public void Rsa_Encrypt_Success_Test()
+        [Theory]
+ 
+        [InlineData(RsaSize.R2048)]
+        [InlineData(RsaSize.R3072)]
+        [InlineData(RsaSize.R4096)]
+        public void Rsa_Encrypt_Success_Test(RsaSize size)
         {
-            var rsaKey = EncryptProvider.CreateRsaKey();
+            var rsaKey = EncryptProvider.CreateRsaKey(size);
             var srcString = "rsa encrypt";
 
             //Act
@@ -56,10 +63,13 @@ public void Rsa_Encrypt_EmptyData_Test()
             Assert.Throws<ArgumentException>(() => EncryptProvider.RSAEncrypt(rsaKey.PublicKey, srcString));
         }
 
-        [Fact(DisplayName = "Rsa decrypt success")]
-        public void Rsa_Decrypt_Success_Test()
+        [Theory]
+        [InlineData(RsaSize.R2048)]
+        [InlineData(RsaSize.R3072)]
+        [InlineData(RsaSize.R4096)]
+        public void Rsa_Decrypt_Success_Test(RsaSize size)
         {
-            var rsaKey = EncryptProvider.CreateRsaKey();
+            var rsaKey = EncryptProvider.CreateRsaKey(size);
             var srcString = "rsa decrypt";
 
             //Act