Fixes for Cipher, AlgorithmParameters, SecretKeyFactory

[cconlon]

This PR includes various fixes including:

• Reset buffered data array in Cipher.engineInit()
• Add AES AlgorithmParameters encoding support
• Correct PBEKey key length when creating in SecretKeyFactory.engineGetKeySpec()
• Increase default size of AES KeyGenerator to 256-bits (32 bytes) to match current SunJCE default
• Add additional Cipher AES and Mac Hmac algorithm aliases
• Fix key serialization and readObject() methods for DHPrivateKey, DHPublicKey, ECPrivateKey, ECPublicKey

JUnit tests are included to prevent regression.

[Copilot]

Pull Request Overview

This PR adds OID alias support for AES Cipher and HMAC-SHA algorithms, fixes a PBEKeySpec key length bug to return bits instead of bytes, and improves AES AlgorithmParameters encoding/decoding support. It also adds serialization support for DH/EC keys and changes the default AES key size from 128 to 256 bits.

• Added OID aliases for AES cipher modes (ECB, CBC, OFB) and HMAC-SHA algorithms
• Fixed PBEKeySpec to return key length in bits instead of bytes
• Implemented ASN.1 encoding/decoding for AES AlgorithmParameters
• Added serialization support for DH and EC public/private keys

Reviewed Changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 20 comments.

Show a summary per file

File	Description
WolfCryptSecretKeyFactory.java	Fixed bug where PBEKeySpec was initialized with key length in bytes instead of bits
WolfCryptProvider.java	Added OID and algorithm aliases for AES cipher modes and HMAC algorithms
WolfCryptKeyGenerator.java	Changed default AES key size from 128 bits to 256 bits
WolfCryptECPublicKey.java	Added readObject method for proper deserialization and made stateLock non-final
WolfCryptECPrivateKey.java	Added readObject method for proper deserialization and made stateLock non-final
WolfCryptDHPublicKey.java	Added readObject method, extraction methods for parameters, and made stateLock non-final
WolfCryptDHPrivateKey.java	Added readObject method, extraction methods for parameters, and made stateLock non-final
WolfCryptCipher.java	Added buffer reset on cipher initialization to prevent stale data issues
WolfCryptAesParameters.java	Implemented ASN.1 encoding/decoding support and added double initialization checks
WolfCryptSecretKeyFactoryTest.java	Added test for PBEKeySpec key length in bits
WolfCryptMacTest.java	Added tests for HMAC OID aliases
WolfCryptKeyGeneratorTest.java	Added test for AES 256-bit default key size
WolfCryptKeyAgreementTest.java	Added tests for DH/EC key serialization
WolfCryptCipherTest.java	Added tests for AES AlgorithmParameters encoding and OID aliases
README_JCE.md	Updated documentation with new OID aliases

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

Pull Request Overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 4 comments.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.