> Based on the javadoc of `javax.crypto.Cipher` class, the cipher 
> transformation should be either "algorithm/mode/padding" or
> "algorithm". When parsing the transformation, space(s) is trimmed off and 
> empty strings are considered as "unspecified". This PR adds checks to ensure 
> that transformations with empty "mode" and/or "padding" value in the 
> "algorithm/mode/padding" form leads to `NoSuchAlgorithmException`. This 
> reverts some changes made in 
> [https://bugs.openjdk.org/browse/JDK-8358159](https://bugs.openjdk.org/browse/JDK-8358159)
>  which allows empty mode and/or padding in the transformations.
> 
> 
> Thanks in advance for the review~

Valerie Peng has updated the pull request incrementally with one additional 
commit since the last revision:

  Remove bug id 8358159 from the test.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25808/files
  - new: https://git.openjdk.org/jdk/pull/25808/files/def1f55b..a02eef2f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25808&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25808&range=04-05

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/25808.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25808/head:pull/25808

PR: https://git.openjdk.org/jdk/pull/25808

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