helpers

Documentation

Index

• Variables
• func DirExists(path string) (bool, error)
• func EnsureDir(dir string, mode os.FileMode) error
• func FromPEMFile(o encoding.BinaryUnmarshaler, f, pemType string) error
• func GetLocalIP() (string, error)
• func IsZeroElement(el sphinx.CryptoElement) bool
• func RandomExponential(expParam float64) (float64, error)
• func RandomMix(mixes []config.MixConfig) config.MixConfig
• func RandomString(length int) string
• func RegisterMixNodePresence(publicKey *sphinx.PublicKey, layer int, host ...string) error
• func RegisterMixProviderPresence(publicKey *sphinx.PublicKey, clients []models.RegisteredClient, host ...string) error
• func ResolveTCPAddress(host, port string) (*net.TCPAddr, error)
• func SHA256(arg []byte) ([]byte, error)
• func SendMixMetrics(metric models.MixMetric, host ...string) error
• func ToPEMFile(o encoding.BinaryMarshaler, f, pemType string) error

Variables

var (
	ErrPermEmptyList                = errors.New("cannot permute an empty list of mixes")
	ErrTooBigSampleSize             = errors.New("cannot take a sample larger than the given list")
	ErrExponentialDistributionParam = errors.New("the parameter of exponential distribution has to be larger than zero")
)

var (
	ErrInvalidLocalIP = errors.New("couldn't find a valid IP for your machine, check your internet connection")
)

Functions

func DirExists

func DirExists(path string) (bool, error)

DirExists checks whether a directory exists at the given path.

func EnsureDir

func EnsureDir(dir string, mode os.FileMode) error

EnsureDir checks whether a directory exists at the given path. If not, it will be created.

func FromPEMFile

func FromPEMFile(o encoding.BinaryUnmarshaler, f, pemType string) error

func GetLocalIP

func GetLocalIP() (string, error)

GetLocalIP attempts to figure out a valid IP address for this machine.

func IsZeroElement

func IsZeroElement(el sphinx.CryptoElement) bool

func RandomExponential

func RandomExponential(expParam float64) (float64, error)

func RandomMix

func RandomMix(mixes []config.MixConfig) config.MixConfig

RandomMix returns a single pseudorandomly chosen mix from given slices of mixes.

func RandomString

func RandomString(length int) string

a very dummy implementation of getting "random" string of given length could be improved in number of ways but for the test sake it's good enough

func RegisterMixNodePresence

func RegisterMixNodePresence(publicKey *sphinx.PublicKey, layer int, host ...string) error

RegisterMixNodePresence registers server presence at the directory server.

func RegisterMixProviderPresence

func RegisterMixProviderPresence(publicKey *sphinx.PublicKey, clients []models.RegisteredClient, host ...string) error

RegisterMixProviderPresence registers server presence at the directory server.

func ResolveTCPAddress

func ResolveTCPAddress(host, port string) (*net.TCPAddr, error)

ResolveTCPAddress returns an address of TCP end point given a host and port.

func SHA256

func SHA256(arg []byte) ([]byte, error)

SHA256 computes the hash value of a given argument using SHA256 algorithm.

func SendMixMetrics

func SendMixMetrics(metric models.MixMetric, host ...string) error

SendMixMetrics sends the mixnode related packet metrics to the directory server.

func ToPEMFile

func ToPEMFile(o encoding.BinaryMarshaler, f, pemType string) error