Purge use of RNGCryptoServiceProvider in examples (#10476)

Author: vcsjones

snippets/cpp/VS_Snippets_CLR/Cryptography.PasswordDerivedbytes/cpp/sample.cpp

@@ -18,12 +18,12 @@ array<Byte>^ CreateRandomSalt(int length)
         randomBytes = gcnew array <Byte>(1);
     }
 
-    // Create a new RNGCryptoServiceProvider.
-    RNGCryptoServiceProvider^ cryptoRNGProvider =
-        gcnew RNGCryptoServiceProvider();
+    // Create a new RandomNumberGenerator.
+    RandomNumberGenerator^ randomNumberGenerator =
+        RandomNumberGenerator::Create();
 
     // Fill the buffer with random bytes.
-    cryptoRNGProvider->GetBytes(randomBytes);
+    randomNumberGenerator->GetBytes(randomBytes);
 
     // return the bytes.
     return randomBytes;

snippets/cpp/VS_Snippets_CLR/HMACRIPEMD160/CPP/hmacripemd160.cpp

@@ -111,8 +111,7 @@ int main()
          //  secret key shared by sender and receiver.
          array<Byte>^secretkey = gcnew array<Byte>(64);
 
-         //RNGCryptoServiceProvider is an implementation of a random number generator.
-         RNGCryptoServiceProvider^ rng = gcnew RNGCryptoServiceProvider;
+         RandomNumberGenerator^ rng = RandomNumberGenerator::Create();
 
          // The array is now filled with cryptographically strong random bytes.
          rng->GetBytes( secretkey );

snippets/cpp/VS_Snippets_CLR/HMACRIPEMD160/CPP/makefile

@@ -0,0 +1,2 @@
+System.Security.Cryptography.HMACRIPEMD160.exe: hmacripemd160.cpp
+    cl /FeSystem.Security.Cryptography.HMACRIPEMD160.exe /clr:pure hmacripemd160.cpp

snippets/cpp/VS_Snippets_CLR/HMACSHA256/CPP/hmacsha256.cpp

@@ -111,8 +111,7 @@ int main()
          //  secret key shared by sender and receiver.
          array<Byte>^secretkey = gcnew array<Byte>(64);
 
-         //RNGCryptoServiceProvider is an implementation of a random number generator.
-         RNGCryptoServiceProvider^ rng = gcnew RNGCryptoServiceProvider;
+         RandomNumberGenerator^ rng = RandomNumberGenerator::Create();
 
          // The array is now filled with cryptographically strong random bytes.
          rng->GetBytes( secretkey );

snippets/cpp/VS_Snippets_CLR/HMACSHA256/CPP/makefile

@@ -0,0 +1,2 @@
+System.Security.Cryptography.HMACSHA256.exe: hmacsha256.cpp 
+    cl /FeSystem.Security.Cryptography.HMACSHA256.exe /clr:pure hmacsha256.cpp

snippets/cpp/VS_Snippets_CLR/HMACSHA384/CPP/hmacsha384.cpp

@@ -111,8 +111,7 @@ int main()
          //  secret key shared by sender and receiver.
          array<Byte>^secretkey = gcnew array<Byte>(64);
 
-         //RNGCryptoServiceProvider is an implementation of a random number generator.
-         RNGCryptoServiceProvider^ rng = gcnew RNGCryptoServiceProvider;
+         RandomNumberGenerator^ rng = RandomNumberGenerator::Create();
 
          // The array is now filled with cryptographically strong random bytes.
          rng->GetBytes( secretkey );

snippets/cpp/VS_Snippets_CLR/HMACSHA384/CPP/makefile

@@ -0,0 +1,2 @@
+System.Security.Cryptography.HMACSHA384.exe: hmacsha384.cpp 
+    cl /FeSystem.Security.Cryptography.HMACSHA384.exe /clr:pure hmacsha384.cpp

snippets/cpp/VS_Snippets_CLR/HMACSHA512/CPP/hmacsha512.cpp

@@ -110,9 +110,8 @@ int main()
          // Create a random key using a random number generator. This would be the
          //  secret key shared by sender and receiver.
          array<Byte>^secretkey = gcnew array<Byte>(64);
-         
-         //RNGCryptoServiceProvider is an implementation of a random number generator.
-         RNGCryptoServiceProvider^ rng = gcnew RNGCryptoServiceProvider;
+
+         RandomNumberGenerator^ rng = RandomNumberGenerator::Create();
 
          // The array is now filled with cryptographically strong random bytes.
          rng->GetBytes( secretkey );

snippets/cpp/VS_Snippets_CLR/HMACSHA512/CPP/makefile

@@ -0,0 +1,2 @@
+System.Security.Cryptography.HMACSHA512.exe: hmacsha512.cpp 
+    cl /FeSystem.Security.Cryptography.HMACSHA512.exe /clr:pure hmacsha512.cpp

snippets/cpp/VS_Snippets_CLR/rfc28981/CPP/rfc28981.cpp

@@ -27,8 +27,8 @@ int main()
       String^ pwd1 = passwordargs[ 1 ];
 
       array<Byte>^salt1 = gcnew array<Byte>(8);
-	  RNGCryptoServiceProvider ^ rngCsp = gcnew RNGCryptoServiceProvider();
-		 rngCsp->GetBytes(salt1);
+      RandomNumberGenerator^ rng = RandomNumberGenerator::Create();
+      rng->GetBytes(salt1);
       //data1 can be a string or contents of a file.
       String^ data1 = "Some test data";