Elliptic Curve Cryptography (ECC) using 256-bit Koblitz curve secp256k1 for keys; SHA512 HMAC and AES-128-GCM for data-channel. RSA-4096; SHA512 or SHA256 and AES-256-GCM or AES-128-GCM for data channels. PFS is enabled with 1-hour rekey interval.
