RFR: 8343622: AesDkCrypto.stringToKey should not return null [v2]

[Weijun Wang]

On Thu, 7 Nov 2024 18:32:57 GMT, Sean Mullan <mullan at openjdk.org> wrote:

> There is already a check for a `null` return value in one of the `EncryptedKey` constructors - did you consider instead adding a similar check in the other ctor?

This hides the real reason why the key value cannot be generated, leaving no information for debugging.

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PR Comment: https://git.openjdk.org/jdk/pull/21908#issuecomment-2464876450