crypto

package
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Published: Oct 5, 2016 License: MIT Imports: 27 Imported by: 0

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Types

type AEAD

type AEAD interface {
	Open(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) ([]byte, error)
	Seal(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) []byte
}

An AEAD implements QUIC's authenticated encryption and associated data

func DeriveKeysAESGCM

func DeriveKeysAESGCM(forwardSecure bool, sharedSecret, nonces []byte, connID protocol.ConnectionID, chlo []byte, scfg []byte, cert []byte, divNonce []byte) (AEAD, error)

DeriveKeysAESGCM derives the client and server keys and creates a matching AES-GCM AEAD instance

func NewAEADAESGCM

func NewAEADAESGCM(otherKey []byte, myKey []byte, otherIV []byte, myIV []byte) (AEAD, error)

NewAEADAESGCM creates a AEAD using AES-GCM with 12 bytes tag size

AES-GCM support is a bit hacky, since the go stdlib does not support 12 byte tag size, and couples the cipher and aes packages closely. See https://github.com/lucas-clemente/aes12.

type KeyExchange

type KeyExchange interface {
	PublicKey() []byte
	CalculateSharedKey(otherPublic []byte) ([]byte, error)
}

KeyExchange manages the exchange of keys

func NewCurve25519KEX

func NewCurve25519KEX() (KeyExchange, error)

NewCurve25519KEX creates a new KeyExchange using Curve25519, see https://cr.yp.to/ecdh.html

type NullAEAD

type NullAEAD struct{}

NullAEAD handles not-yet encrypted packets

func (NullAEAD) Open

func (NullAEAD) Open(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) ([]byte, error)

Open and verify the ciphertext

func (NullAEAD) Seal

func (NullAEAD) Seal(dst, src []byte, packetNumber protocol.PacketNumber, associatedData []byte) []byte

Seal writes hash and ciphertext to the buffer

type Signer

type Signer interface {
	SignServerProof(sni string, chlo []byte, serverConfigData []byte) ([]byte, error)
	GetCertsCompressed(sni string, commonSetHashes, cachedHashes []byte) ([]byte, error)
	GetLeafCert(sni string) ([]byte, error)
}

A Signer holds a certificate and a private key

func NewProofSource

func NewProofSource(tlsConfig *tls.Config) (Signer, error)

NewProofSource loads the key and cert from files

type StkSource

type StkSource interface {
	// NewToken creates a new token for a given IP address
	NewToken(ip net.IP) ([]byte, error)
	// VerifyToken verifies if a token matches a given IP address and is not outdated
	VerifyToken(ip net.IP, data []byte) error
}

StkSource is used to create and verify source address tokens

func NewStkSource

func NewStkSource(secret []byte) (StkSource, error)

NewStkSource creates a source for source address tokens

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