Add validation to IpSecConfig algorithm setters

Adds checks to ensure that users can only set the correct types of
algorithms for the Authentication, Encryption and Authenticated
Encryption algorithms.

Bug: 65223935
Test: Added tests in IpSecConfigTest, and passed on aosp_marlin-eng
Change-Id: I462c77d9eb5710b8d03a48866453649d3b6fc6bf

core/java/android/net/IpSecAlgorithm.java

@@ -231,6 +231,31 @@ public final class IpSecAlgorithm implements Parcelable {
         }
     }
 
+    /** @hide */
+    public boolean isAuthentication() {
+        switch (getName()) {
+            // Fallthrough
+            case AUTH_HMAC_MD5:
+            case AUTH_HMAC_SHA1:
+            case AUTH_HMAC_SHA256:
+            case AUTH_HMAC_SHA384:
+            case AUTH_HMAC_SHA512:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /** @hide */
+    public boolean isEncryption() {
+        return getName().equals(CRYPT_AES_CBC);
+    }
+
+    /** @hide */
+    public boolean isAead() {
+        return getName().equals(AUTH_CRYPT_AES_GCM);
+    }
+
     @Override
     public String toString() {
         return new StringBuilder()