# System.Security.Cryptography.Pkcs

``` diff
 {
     namespace System.Security.Cryptography.Pkcs {
         public sealed class ContentInfo {
+            public static Oid GetContentType(ReadOnlySpan<byte> encodedMessage);
         }
         public sealed class EnvelopedCms {
+            public void Decode(ReadOnlySpan<byte> encodedMessage);
         }
         public sealed class SignedCms {
+            public void Decode(ReadOnlySpan<byte> encodedMessage);
         }
     }
 }
```

