Pkcs9SigningTime: normalize exception on time < 1601

Make Pkcs9SigningTime throw CryptographicException for all times which cannot be encoded.

In .NET Framework (and prior versions of .NET Core) an ArgumentException is thrown for values which cannot be expressed as a FILETIME value, and a CryptographicException for dates in [1601, 1949] and [2050, ...)

Commit migrated from dotnet/corefx@826f821

src/libraries/System.Security.Cryptography.Pkcs/src/Internal/Cryptography/Pal/Windows/PkcsPalWindows.cs

@@ -54,7 +54,16 @@ public sealed override byte[] DecodeOctetString(byte[] encodedOctets)
 
         public sealed override byte[] EncodeUtcTime(DateTime utcTime)
         {
-            long ft = utcTime.ToFileTimeUtc();
+            long ft;
+            try 
+            {
+                ft = utcTime.ToFileTimeUtc();
+            }
+            catch (ArgumentException ex)
+            {
+                throw new CryptographicException(ex.Message, ex);
+            }
+
             unsafe
             {
                 return Interop.Crypt32.CryptEncodeObjectToByteArray(CryptDecodeObjectStructType.PKCS_UTC_TIME, &ft);

src/libraries/System.Security.Cryptography.Pkcs/tests/Pkcs9AttributeTests.cs

@@ -27,6 +27,19 @@ public static void Pkcs9AttributeAsnEncodedDataCtorNullOid()
             Assert.Throws<ArgumentNullException>(() => ign = new Pkcs9AttributeObject(a));
         }
 
+        [Fact]
+        public static void InputDateTimeAsWindowsFileTimeBefore1601()
+        {
+            DateTime dt = new DateTime(1600, 12, 31, 11, 59, 59, DateTimeKind.Utc);
+            AssertExtensions.Throws<CryptographicException, ArgumentOutOfRangeException>(() => new Pkcs9SigningTime(dt));
+        }
+
+        [Fact]
+        public static void Pkcs9SigningTime_DateTimeMinValue()
+        {
+            AssertExtensions.Throws<CryptographicException, ArgumentOutOfRangeException>(() => new Pkcs9SigningTime(DateTime.MinValue));
+        }
+
         [Fact]
         public static void InputDateTimeAsX509TimeBefore1950_Utc()
         {