util.crypto: Add support for RSA signatures (PKCS1-v1.5 + PSS) These are used by the RS*** and PS*** family of JOSE algorithms (e.g. in JWTs)

util.jwt: Add support/tests for ES256 via improved API and using util.crypto In many cases code will be either signing or verifying. With asymmetric algorithms it's clearer and more efficient to just state that once, instead of passing keys (and possibly other parameters) with every sign/verify call. This also allows earlier validation of the key used. The previous (HS256-only) sign/verify methods continue to be exposed for backwards-compatibility.

util.crypto: Add Teal type specification

util.paseto: Implementation of PASETO v4.public tokens PASETO provides an alternative to JWT with the promise of fewer implementation pitfalls. The v4.public algorithm allows asymmetric cryptographically-verified token issuance and validation. In summary, such tokens can be issued by one party and securely verified by any other party independently using the public key of the issuer. This has a number of potential applications in a decentralized network and ecosystem such as XMPP. For example, such tokens could be combined with XEP-0317 to allow hats to be verified even in the context of a third-party MUC service.

util.crypto: New wrapper for some operations in OpenSSL's libcrypto Specifically, ED25519 key generation/import/export, sign/verify operations, and AES encrypt/decrypt.

util-src: Add new utility header managed_pointer.h The macros in this header allow creation of GC-managed objects from manually- managed C alloc/free APIs.

mod_smacks: Set session.smacks after sending <enabled/> to fix traceback ...with opportunistic writes enabled.

core.moduleapi: Check for local role-aware sessions before e.g. s2s The condition checked for s2sin but not s2sout, so would have ignored bidi-enabled s2sout sessions. Components as well.

mod_smacks: Use new :add_error() in last remaining error result construction

mod_smacks: Split enable handling to stages, to allow easier SASL2 integration