mixnet

package

v0.0.0-...-f3b58b8 Latest Latest Go to latest Published: May 17, 2017 License: AGPL-3.0-or-later Imports: 15 Imported by: 0

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Repository

github.com/davidlazar/vuvuzela

Documentation ¶

Index ¶

Constants
func BackwardNonce(round uint32) *[24]byte
func FillWithFakeDoubles(dest [][]byte, nonce *[24]byte, nextKeys []*[32]byte)
func FillWithFakeSingles(dest [][]byte, nonce *[24]byte, nextKeys []*[32]byte)
func ForwardNonce(round uint32) *[24]byte
func NewRound(servers []*vrpc.Client, settings *RoundSettings) ([][]byte, error)
func RunRound(server *vrpc.Client, round uint32, onions [][]byte) ([][]byte, error)
type AccessCount
type AddArgs
type ChainService
- func (srv *ChainService) Add(args *AddArgs, _ *struct{}) error
- func (srv *ChainService) Close(round uint32, _ *struct{}) error
- func (srv *ChainService) Delete(round uint32, _ *struct{}) error
- func (srv *ChainService) Get(args *GetArgs, reply *GetReply) error
- func (srv *ChainService) SetNumIncoming(args *SetNumIncomingArgs, _ *struct{}) error
type CoordinatorService
- func (srv *CoordinatorService) NewRound(args *NewRoundArgs, reply *NewRoundReply) error
- func (srv *CoordinatorService) SetRoundSettings(settings *RoundSettings, reply *SetRoundSettingsReply) error
type DeadDrop
type GetArgs
type GetReply
type MixMessage
- func (m *MixMessage) Marshal() []byte
- func (m *MixMessage) Unmarshal(data []byte) error
type NewRoundArgs
type NewRoundReply
type RoundSettings
- func (r *RoundSettings) Sign(key ed25519.PrivateKey) []byte
- func (r *RoundSettings) Verify(key ed25519.PublicKey, sig []byte) bool
type Server
type SetNumIncomingArgs
type SetRoundSettingsReply

Constants ¶

View Source

const (
	SizeMessageBody          = 240
	SizeEncryptedMessageBody = SizeMessageBody + box.Overhead
)

Variables ¶

This section is empty.

Functions ¶

func BackwardNonce ¶

func BackwardNonce(round uint32) *[24]byte

func FillWithFakeDoubles ¶

func FillWithFakeDoubles(dest [][]byte, nonce *[24]byte, nextKeys []*[32]byte)

func FillWithFakeSingles ¶

func FillWithFakeSingles(dest [][]byte, nonce *[24]byte, nextKeys []*[32]byte)

func ForwardNonce ¶

func ForwardNonce(round uint32) *[24]byte

func NewRound ¶

func NewRound(servers []*vrpc.Client, settings *RoundSettings) ([][]byte, error)

NewRound starts a new mixing round on the given servers. NewRound fills in settings.OnionKeys and returns the servers' signatures of the round settings.

settings.Round and settings.NumMailboxes must be set.

func RunRound ¶

func RunRound(server *vrpc.Client, round uint32, onions [][]byte) ([][]byte, error)

Types ¶

type AccessCount ¶

type AccessCount struct {
	Singles int64
	Doubles int64
}

type AddArgs ¶

type AddArgs struct {
	Round  uint32
	Offset int
	Onions [][]byte
}

type ChainService ¶

type ChainService struct {
	*Server
}

func (*ChainService) Add ¶

func (srv *ChainService) Add(args *AddArgs, _ *struct{}) error

Add is an RPC used to add onions to the mix.

func (*ChainService) Close ¶

func (srv *ChainService) Close(round uint32, _ *struct{}) error

func (*ChainService) Delete ¶

func (srv *ChainService) Delete(round uint32, _ *struct{}) error

func (*ChainService) Get ¶

func (srv *ChainService) Get(args *GetArgs, reply *GetReply) error

func (*ChainService) SetNumIncoming ¶

func (srv *ChainService) SetNumIncoming(args *SetNumIncomingArgs, _ *struct{}) error

type CoordinatorService ¶

type CoordinatorService struct {
	*Server
}

func (*CoordinatorService) NewRound ¶

func (srv *CoordinatorService) NewRound(args *NewRoundArgs, reply *NewRoundReply) error

func (*CoordinatorService) SetRoundSettings ¶

func (srv *CoordinatorService) SetRoundSettings(settings *RoundSettings, reply *SetRoundSettingsReply) error

SetRoundSettings is an RPC used by the coordinator to set the parameters for a round. The RPC returns a signature of the round settings. Clients must verify this signature from each server before participating in the round. This prevents dishonest servers from tricking clients and other servers into using different keys or a different number of mailboxes in a round (which can lead to distinguishable noise).

type DeadDrop ¶

type DeadDrop [16]byte

type GetArgs ¶

type GetArgs struct {
	Round  uint32
	Offset int
	Count  int
}

type GetReply ¶

type GetReply struct {
	Onions [][]byte
}

type MixMessage ¶

type MixMessage struct {
	DeadDrop         DeadDrop
	EncryptedMessage [SizeEncryptedMessageBody]byte
}

func (*MixMessage) Marshal ¶

func (m *MixMessage) Marshal() []byte

func (*MixMessage) Unmarshal ¶

func (m *MixMessage) Unmarshal(data []byte) error

type NewRoundArgs ¶

type NewRoundArgs struct {
	Round uint32
}

type NewRoundReply ¶

type NewRoundReply struct {
	OnionKey *[32]byte
}

type RoundSettings ¶

type RoundSettings struct {
	Round uint32
	// OnionKeys are the encryption keys in mixnet order.
	OnionKeys []*[32]byte
}

func (*RoundSettings) Sign ¶

func (r *RoundSettings) Sign(key ed25519.PrivateKey) []byte

func (*RoundSettings) Verify ¶

func (r *RoundSettings) Verify(key ed25519.PublicKey, sig []byte) bool

type Server ¶

type Server struct {
	SigningKey     ed25519.PrivateKey
	ServerPosition int // position in chain, starting at 0
	NumServers     int
	NextServer     *vrpc.Client

	Laplace rand.Laplace

	AccessCounts chan AccessCount
	// contains filtered or unexported fields
}

type SetNumIncomingArgs ¶

type SetNumIncomingArgs struct {
	Round       uint32
	NumIncoming int
}

type SetRoundSettingsReply ¶

type SetRoundSettingsReply struct {
	// Signature on RoundSettings
	Signature []byte
}

Source Files ¶

View all Source files

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