added an implementation of RSA/ECB/OAEPWithSHA-256AndMGF1Padding as it is implemented in java as: RSA/ECB/OAEPWithSHA-256AndMGF1WithSHA-1Padding

Author: Fabio Germann

crypto/src/security/CipherUtilities.cs

@@ -85,6 +85,10 @@ private enum CipherPadding
             OAEPWITHSHA_224ANDMGF1PADDING,
             OAEPWITHSHA256ANDMGF1PADDING,
             OAEPWITHSHA_256ANDMGF1PADDING,
+            OAEPWITHSHA256ANDMGF1WITHSHA256PADDING,
+            OAEPWITHSHA_256ANDMGF1WITHSHA_256PADDING,
+            OAEPWITHSHA256ANDMGF1WITHSHA1PADDING,
+            OAEPWITHSHA_256ANDMGF1WITHSHA_1PADDING,
             OAEPWITHSHA384ANDMGF1PADDING,
             OAEPWITHSHA_384ANDMGF1PADDING,
             OAEPWITHSHA512ANDMGF1PADDING,
@@ -543,8 +547,14 @@ public static IBufferedCipher GetCipher(
                         break;
                     case CipherPadding.OAEPWITHSHA256ANDMGF1PADDING:
                     case CipherPadding.OAEPWITHSHA_256ANDMGF1PADDING:
+                    case CipherPadding.OAEPWITHSHA256ANDMGF1WITHSHA256PADDING:
+                    case CipherPadding.OAEPWITHSHA_256ANDMGF1WITHSHA_256PADDING:
                         asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha256Digest());
                         break;
+                    case CipherPadding.OAEPWITHSHA256ANDMGF1WITHSHA1PADDING:
+                    case CipherPadding.OAEPWITHSHA_256ANDMGF1WITHSHA_1PADDING:
+                        asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha256Digest(), new Sha1Digest(), null);
+                        break;
                     case CipherPadding.OAEPWITHSHA384ANDMGF1PADDING:
                     case CipherPadding.OAEPWITHSHA_384ANDMGF1PADDING:
                         asymBlockCipher = new OaepEncoding(asymBlockCipher, new Sha384Digest());