JCE: Implements KeyGenerator benchmark

[jackctj117]

Added KeyGen benchmark and some code cleanup.

[Copilot]

Pull Request Overview

This PR adds a new KeyGenerator benchmarking feature and updates the algorithm filtering logic for providers, along with some code cleanup.

• Extends getAlgorithmsForProvider to treat KeyGenerator alongside Mac
• Implements runKeyGeneratorBenchmark and related helper methods
• Updates main to execute the KeyGenerator benchmarks for each provider

Comments suppressed due to low confidence (2)

examples/provider/CryptoBenchmark.java:1292

• New benchmarking logic should be covered by unit or integration tests to ensure consistent behavior and prevent regressions.

private static void runKeyGeneratorBenchmark(String algorithm, String providerName) throws Exception {

examples/provider/CryptoBenchmark.java:1294

• [nitpick] The variable name ops is ambiguous; consider renaming it to something more descriptive like operationCount.

int ops = 0;

[cconlon]

Seems like something goes wrong for me when I run this:

-----------------------------------------------------------------------------
KeyGenerator Benchmark Results
-----------------------------------------------------------------------------

wolfJCE:
 AES (wolfJCE)                               727628 ops took 1.000 sec, 727627.366 ops/sec
 HmacSHA1 (wolfJCE)                        Error: Unsupported algorithm: HmacSHA1
 HmacSHA224 (wolfJCE)                      Error: Unsupported algorithm: HmacSHA224
 HmacSHA256 (wolfJCE)                      Error: Unsupported algorithm: HmacSHA256
 HmacSHA384 (wolfJCE)                      Error: Unsupported algorithm: HmacSHA384
 HmacSHA512 (wolfJCE)                      Error: Unsupported algorithm: HmacSHA512

SunJCE:
 AES (SunJCE)                                770843 ops took 1.000 sec, 770842.320 ops/sec
 HmacSHA1 (SunJCE)                         Error: Unsupported algorithm: HmacSHA1
 HmacSHA224 (SunJCE)                       Error: Unsupported algorithm: HmacSHA224
 HmacSHA256 (SunJCE)                       Error: Unsupported algorithm: HmacSHA256
 HmacSHA384 (SunJCE)                       Error: Unsupported algorithm: HmacSHA384
 HmacSHA512 (SunJCE)                       Error: Unsupported algorithm: HmacSHA512

BC:
 AES (BC)                                    779577 ops took 1.000 sec, 779576.505 ops/sec
 HMACSHA1 (BC)                             Error: Unsupported algorithm: HMACSHA1
 HMACSHA224 (BC)                           Error: Unsupported algorithm: HMACSHA224
 HMACSHA256 (BC)                           Error: Unsupported algorithm: HMACSHA256
 HMACSHA384 (BC)                           Error: Unsupported algorithm: HMACSHA384
 HMACSHA512 (BC)                           Error: Unsupported algorithm: HMACSHA512

My Java version:

java -version
openjdk version "1.8.0_372"
OpenJDK Runtime Environment Corretto-8.372.07.1 (build 1.8.0_372-b07)
OpenJDK 64-Bit Server VM Corretto-8.372.07.1 (build 25.372-b07, mixed mode)

Also, please squash commits down, thanks.