Encryption of HS and circuits - urgently

i just wanted a confirmation about my notes:

circuits are encrypted with AES -256 between relay-relay and client-relay.
The key exchange for client and destination works with ECDH?

v2 HS:
encrypted with RSA1024, Keyexchange via DH, Hash is SHA1

v3 HS:
encrypted with curve22519, keyexchange via ecdhe ed22519, and hash is SHA3

thx a lot