RFR: 8330217: Spurious warning from jarsigner -verify when keystore with intermediate CA is used

[Anthony Scarpino]

On Thu, 13 Jun 2024 14:01:55 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> There is an error in `jarsigner` on the "This JAR contains signed entries that aren't signed by alias in this keystore" warning. The exit code is determined by [`notSignedByAlias`](https://github.com/openjdk/jdk/blob/0a60b0f99efb38d2cc97f3862ef95a0d26ba49a7/src/jdk.jartool/share/classes/sun/security/tools/jarsigner/Main.java#L344) but the warning message is controlled by [`allAliasesFound`](https://github.com/openjdk/jdk/blob/0a60b0f99efb38d2cc97f3862ef95a0d26ba49a7/src/jdk.jartool/share/classes/sun/security/tools/jarsigner/Main.java#L1183).
> 
> Also, inside the `inKeyStoreForOneSigner()` method, all certificates in a cert chain are used to determine whether the signer is in a keystore and if any is inside the JAR file is treated as being signed by an alias in this keystore. In fact, only the end-entity certificate (the first one in the chain) should be checked.
> 
> After the fix, the `allAliasesFound` field and the `SOME_ALIASES_NOT_FOUND` constant are useless and can be removed.

Since this is changing exit codes, does it deserve a release note?  Otherwise the change looks fine.

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Marked as reviewed by ascarpino (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/19701#pullrequestreview-2116179077