Workaround a cipher issue in Android 4.3

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Issue: #2755

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=169249093

library/core/src/main/java/com/google/android/exoplayer2/upstream/cache/CachedContentIndex.java

@@ -99,7 +99,7 @@ import javax.crypto.spec.SecretKeySpec;
     if (secretKey != null) {
     if (secretKey != null) {
       Assertions.checkArgument(secretKey.length == 16);
       Assertions.checkArgument(secretKey.length == 16);
       try {
       try {
-        cipher = Cipher.getInstance("AES/CBC/PKCS5PADDING");
+        cipher = getCipher();
         secretKeySpec = new SecretKeySpec(secretKey, "AES");
         secretKeySpec = new SecretKeySpec(secretKey, "AES");
       } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
       } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
         throw new IllegalStateException(e); // Should never happen.
         throw new IllegalStateException(e); // Should never happen.
@@ -354,6 +354,18 @@ import javax.crypto.spec.SecretKeySpec;
     return cachedContent;
     return cachedContent;
   }
   }
 
 
+  private static Cipher getCipher() throws NoSuchPaddingException, NoSuchAlgorithmException {
+    // Workaround for https://issuetracker.google.com/issues/36976726
+    if (Util.SDK_INT == 18) {
+      try {
+        return Cipher.getInstance("AES/CBC/PKCS5PADDING", "BC");
+      } catch (Throwable ignored) {
+        // ignored
+      }
+    }
+    return Cipher.getInstance("AES/CBC/PKCS5PADDING");
+  }
+
   /**
   /**
    * Returns an id which isn't used in the given array. If the maximum id in the array is smaller
    * Returns an id which isn't used in the given array. If the maximum id in the array is smaller
    * than {@link java.lang.Integer#MAX_VALUE} it just returns the next bigger integer. Otherwise it
    * than {@link java.lang.Integer#MAX_VALUE} it just returns the next bigger integer. Otherwise it