1 files changed, 15 insertions, 0 deletions
diff --git a/src/libraries/System.Security.Cryptography/tests/AesTests.Browser.cs b/src/libraries/System.Security.Cryptography/tests/AesTests.Browser.cs
index 32c253a1234..5e8eafbaa38 100644
--- a/src/libraries/System.Security.Cryptography/tests/AesTests.Browser.cs
+++ b/src/libraries/System.Security.Cryptography/tests/AesTests.Browser.cs
@@ -43,5 +43,20 @@ namespace System.Security.Cryptography.Tests
                 Assert.Throws<PlatformNotSupportedException>(() => aes.CreateDecryptor(s_iv, s_iv));
             }
         }
+
+        // Browser's SubtleCrypto doesn't support AES-192
+        [Fact]
+        public static void Aes_InvalidKeySize_192_Browser()
+        {
+            byte[] key192 = new byte[192 / 8];
+            using (Aes aes = Aes.Create())
+            {
+                Assert.False(aes.ValidKeySize(192));
+                Assert.Throws<CryptographicException>(() => aes.Key = key192);
+                Assert.Throws<CryptographicException>(() => aes.KeySize = 192);
+                Assert.Throws<ArgumentException>(() => aes.CreateEncryptor(key192, s_iv));
+                Assert.Throws<ArgumentException>(() => aes.CreateDecryptor(key192, s_iv));
+            }
+        }
     }
 }