RFR: 8358159: Empty mode/padding in cipher transformations [v3]

[Sean Mullan]

On Wed, 4 Jun 2025 10:37:28 GMT, Varada M <varadam at openjdk.org> wrote:

>> Omitting the mode/padding in a transformation string eg: "AES/ /NoPadding" throws NoSuchAlgorithmException.
>> This patch restores the behavior by ensuring that empty mode or padding strings are interpreted as null.
>> 
>> Testing done for : tier1 - fastdebug level (AIX)
>> 
>> JBS: [JDK-8358159](https://bugs.openjdk.org/browse/JDK-8358159)
>
> Varada M has updated the pull request incrementally with one additional commit since the last revision:
> 
>   whitespace error fix

@valeriepeng Can you also review this? Thanks.

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PR Comment: https://git.openjdk.org/jdk/pull/25547#issuecomment-2940086483