RFR: 8364226: Better ECDSASignature Memory Management

[Anthony Scarpino]

On Mon, 28 Jul 2025 19:59:49 GMT, Kevin Driver <kdriver at openjdk.org> wrote:

> Enhance the memory management/cleanup for `ECDSASignature`.

src/java.base/share/classes/sun/security/ec/ECDSASignature.java line 449:

> 447:                 // value for "s" when necessary
> 448:                 byte[] retValue = ops.signDigest(s, digest, seed);
> 449:                 if(extraCopyToZero) {

I believe you can avoid the change above (428-435) with `if (!priv instanceof ECPrivateKeyImpl)` here.
Also a style nit with a missing space between if "if" and "("

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PR Review Comment: https://git.openjdk.org/jdk/pull/26516#discussion_r2245812010