View source for WireGuard VPN FAQs

[[Category:FAQs]]
=== How resilient is a WireGuard connection? ===

WireGuard is built for roaming. If your device changes networks, e.g. from WiFi to a mobile/cellular, the connection will persist because as long as the client sends correctly authenticated data to our WireGuard VPN server, the server keeps the connection alive.

=== What cryptography is used in WireGuard? ===

ChaCha20 for symmetric encryption, authenticated with Poly1305, using RFC7539's AEAD construction
Curve25519 for ECDH
BLAKE2s for hashing and keyed hashing, as described in RFC7693
SipHash24 for hashtable keys
HKDF for key derivation, as described in RFC5869
Noise_IK handshake from Noise, building on the work of CurveCP, NaCL, KEA+, SIGMA, FHMQV, and HOMQV
All packets are sent over UDP