Hash functions

[idegtiarenko]

This change adds infrastructure to add more hash functions easier as well as md5 implementation to demonstrate it.

[github-actions]

Documentation preview:

• ✨ Changed pages

[elasticsearchmachine]

Pinging @elastic/es-analytical-engine (Team:Analytics)

[elasticsearchmachine]

Hi @idegtiarenko, I've created a changelog YAML for you.

[idegtiarenko]

While this is open we might add couple more functions as well.

This digests are defined and used in ES:

elasticsearch/server/src/main/java/org/elasticsearch/common/hash/MessageDigests.java

Lines 41 to 44 in a59c182

	private static final ThreadLocal<MessageDigest> MD5_DIGEST = createThreadLocalMessageDigest("MD5");
	private static final ThreadLocal<MessageDigest> SHA_1_DIGEST = createThreadLocalMessageDigest("SHA-1");
	private static final ThreadLocal<MessageDigest> SHA_256_DIGEST = createThreadLocalMessageDigest("SHA-256");
	private static final ThreadLocal<MessageDigest> SHA_512_DIGEST = createThreadLocalMessageDigest("SHA-512");

Following algorithms seems to be available in several JVMs I checked:

SHA-1
SHA-224
SHA-256
SHA-384
SHA-512/256
SHA-512/224
SHA-512
SHA3-224
SHA3-384
SHA3-256
SHA3-512