ClientHandshake does the client side of a ntor handshake and returnes status, KEY_SEED, and AUTH.

CompareAuth does a constant time compare of a Auth and a byte slice (presumably received over a network).

Kdf extracts and expands KEY_SEED via HKDF-SHA256 and returns `okm_len` bytes of key material.

KeypairFromHex returns a Keypair from the hexdecimal representation of the private key.

NewKeypair generates a new Curve25519 keypair, and optionally also generates an Elligator representative of the public key.

NewNodeID creates a NodeID from the raw bytes.

NewPublicKey creates a PublicKey from the raw bytes.

NodeIDFromHex creates a new NodeID from the hexdecimal representation.

PublicKeyFromHex returns a PublicKey from the hexdecimal representation.

ServerHandshake does the server side of a ntor handshake and returns status, KEY_SEED, and AUTH.

AuthLength is the lenght of the derived AUTH.

KeySeedLength is the length of the derived KEY_SEED.

NodeIDLength is the length of a ntor node identifier.

PrivateKeyLength is the length of a Curve25519 private key.

PublicKeyLength is the length of a Curve25519 public key.

RepresentativeLength is the length of an Elligator representative.

SharedSecretLength is the length of a Curve25519 shared secret.

Keypair is a Curve25519 keypair with an optional Elligator representative.

Auth is the verifier that results from a handshake (AUTH).

KeySeed is the key material that results from a handshake (KEY_SEED).

NodeID is a ntor node identifier.

NodeIDLengthError is the error returned when the node ID being imported is an invalid length.

PrivateKey is a Curve25519 private key in little-endian byte order.

PrivateKeyLengthError is the error returned when the private key being imported is an invalid length.

PublicKey is a Curve25519 public key in little-endian byte order.

PublicKeyLengthError is the error returned when the public key being imported is an invalid length.

Representative is an Elligator representative of a Curve25519 public key in little-endian byte order.