beacon

Documentation

Overview

Package beacon provides moneysocket Beacon's for communicating various locations and a SharedSeed encoder for end-to-end encryption

Index

• Constants
• type Beacon
  • func DecodeFromBech32Str(bech32 string) (Beacon, error)
  • func DecodeTLV(b []byte) (beacon Beacon, err error)
  • func NewBeacon() Beacon
  • func NewBeaconFromSharedSeed(seed SharedSeed) Beacon
  • func (b *Beacon) AddLocation(loc location.Location)
  • func (b Beacon) EncodeLocationListTlvs() []byte
  • func (b Beacon) EncodeTLV() []byte
  • func (b Beacon) GetSharedSeed() SharedSeed
  • func (b Beacon) Locations() []location.Location
  • func (b Beacon) ToBech32Str() string
  • func (b Beacon) ToObject() map[string]interface{}
• type SharedSeed
  • func BytesToSharedSeed(rawBytes []byte) (seed SharedSeed, err error)
  • func HexToSharedSeed(rawHex string) (seed SharedSeed, err error)
  • func NewSharedSeed() SharedSeed
  • func (s SharedSeed) DeriveAES256Key() []byte
  • func (s SharedSeed) DeriveRendezvousID() []byte
  • func (s SharedSeed) DoubleSHA256(inputBytes []byte) []byte
  • func (s SharedSeed) EncodedTLV() []byte
  • func (s SharedSeed) Equal(seed SharedSeed) bool
  • func (s SharedSeed) GetBytes() []byte
  • func (s SharedSeed) Hash() uint64
  • func (s SharedSeed) Hex() string
  • func (s SharedSeed) SHA256(inputBytes []byte) string
  • func (s SharedSeed) TLV() tlv.Record
  • func (s SharedSeed) ToString() string

Constants

const MoneysocketHrp = "moneysocket"

MoneysocketHrp is the human readable part (https://en.bitcoin.it/wiki/BIP_0173#Bech32 ) of the TLV (type-length-value, defined in BOLT #1: https://git.io/JLCRq ).

const SharedSeedLength = 16

SharedSeedLength defines the length of the shared seed.

Types

type Beacon

type Beacon struct {
	// contains filtered or unexported fields
}

Beacon contains a SharedSeed for end-to-end encryption and a list of location.Location's.

func DecodeFromBech32Str

func DecodeFromBech32Str(bech32 string) (Beacon, error)

DecodeFromBech32Str decodes a Beacon from a bech32 string (https://en.bitcoin.it/wiki/BIP_0173#Bech32 ).

func DecodeTLV

func DecodeTLV(b []byte) (beacon Beacon, err error)

DecodeTLV decodes a TLV (type-length-value, defined in BOLT #1: https://git.io/JLCRq) into a Beacon. Returns an error if Beacon cannot be decoded.

func NewBeacon

func NewBeacon() Beacon

NewBeacon creates a Beacon with no locations and an auto-generated SharedSeed.

func NewBeaconFromSharedSeed

func NewBeaconFromSharedSeed(seed SharedSeed) Beacon

NewBeaconFromSharedSeed creates a Beacon with no locations and the given SharedSeed.

func (*Beacon) AddLocation

func (b *Beacon) AddLocation(loc location.Location)

AddLocation appends a location to the beacon.

func (Beacon) EncodeLocationListTlvs

func (b Beacon) EncodeLocationListTlvs() []byte

EncodeLocationListTlvs encodes a list of locations as tlvs.

func (Beacon) EncodeTLV

func (b Beacon) EncodeTLV() []byte

EncodeTLV encodes the tlv.

func (Beacon) GetSharedSeed

func (b Beacon) GetSharedSeed() SharedSeed

GetSharedSeed fetches the shared seed from the beacon.

func (Beacon) Locations

func (b Beacon) Locations() []location.Location

Locations returns the list of locations in the Beacon.

func (Beacon) ToBech32Str

func (b Beacon) ToBech32Str() string

ToBech32Str encodes the tlv to a bech32 string (https://en.bitcoin.it/wiki/BIP_0173#Bech32 ).

func (Beacon) ToObject

func (b Beacon) ToObject() map[string]interface{}

ToObject generates a json-encodable map of the Beacon's data.

type SharedSeed

type SharedSeed struct {
	// contains filtered or unexported fields
}

SharedSeed is a seed used for end-to-end encryption.

func BytesToSharedSeed

func BytesToSharedSeed(rawBytes []byte) (seed SharedSeed, err error)

BytesToSharedSeed creates a SharedSeed from a []byte slice returns an error when seed cannot be decoded.

func HexToSharedSeed

func HexToSharedSeed(rawHex string) (seed SharedSeed, err error)

HexToSharedSeed creates a shared seed from an input hex returns an error when this is not possible.

func NewSharedSeed

func NewSharedSeed() SharedSeed

NewSharedSeed generates a new random shared seed.

func (SharedSeed) DeriveAES256Key

func (s SharedSeed) DeriveAES256Key() []byte

DeriveAES256Key will generate a DoubleSHA256 of the shared seed see https://en.wikipedia.org/wiki/Advanced_Encryption_Standard for details.

func (SharedSeed) DeriveRendezvousID

func (s SharedSeed) DeriveRendezvousID() []byte

DeriveRendezvousID will generate a DoubleSHA256 of the DeriveAES256Key.

func (SharedSeed) DoubleSHA256

func (s SharedSeed) DoubleSHA256(inputBytes []byte) []byte

DoubleSHA256 will generate SHA256(SHA256(inputBytes)).

func (SharedSeed) EncodedTLV

func (s SharedSeed) EncodedTLV() []byte

EncodedTLV will encode the TLV into a byte-slice (See BOLT #1: https://git.io/JLCRq ).

func (SharedSeed) Equal

func (s SharedSeed) Equal(seed SharedSeed) bool

Equal check if two seeds are equal.

func (SharedSeed) GetBytes

func (s SharedSeed) GetBytes() []byte

GetBytes gets the seedBytes from the shared seed.

func (SharedSeed) Hash

func (s SharedSeed) Hash() uint64

Hash converts the seed bytes to a big endian int.

func (SharedSeed) Hex

func (s SharedSeed) Hex() string

Hex converts the shared seed to string via hex encoding.

func (SharedSeed) SHA256

func (s SharedSeed) SHA256(inputBytes []byte) string

SHA256 the seed bytes, format as string.

func (SharedSeed) TLV

func (s SharedSeed) TLV() tlv.Record

TLV will encode the SharedSeed into a tlv.Record.

func (SharedSeed) ToString

func (s SharedSeed) ToString() string

ToString is a wrapper around Hex() for usability.