lib

Documentation

Index

• func Context(client, server kyber.Point) []byte
• func DhExchange(ownPrivate kyber.Scalar, remotePublic kyber.Point) kyber.Point
• func GenEphemeralKeys(r *onet.Roster) (map[string]kyber.Scalar, map[string]kyber.Point)
• func GenNonce() []byte
• func NewAEAD(fn func() hash.Hash, preSharedKey kyber.Point, context []byte) (cipher.AEAD, error)
• func SignWithNonce(privateKey kyber.Scalar, msg []byte, nonce []byte) ([]byte, error)
• func VerifyWithNonce(publicKey kyber.Point, msg []byte, nonce []byte, sig []byte) error
• type Resource
  • func FetchAllResources(URL string) ([]*Resource, error)
  • func FetchMainResource(URL string) (*Resource, error)

Functions

func Context

func Context(client, server kyber.Point) []byte

Context returns the context slice to be used when encrypting a share

func DhExchange

func DhExchange(ownPrivate kyber.Scalar, remotePublic kyber.Point) kyber.Point

DhExchange computes the shared key from a private key and a public key

func GenEphemeralKeys

func GenEphemeralKeys(r *onet.Roster) (map[string]kyber.Scalar, map[string]kyber.Point)

GenEphemeralKeys generate an ephemeral key pair for every conode in the roster. Note: the security of this function should be verified, because we return also the private keys

func GenNonce

func GenNonce() []byte

GenNonce generates a 32 bytes nonce

func NewAEAD

func NewAEAD(fn func() hash.Hash, preSharedKey kyber.Point, context []byte) (cipher.AEAD, error)

NewAEAD returns the AEAD cipher to be use to encrypt a share

func SignWithNonce

func SignWithNonce(privateKey kyber.Scalar, msg []byte, nonce []byte) ([]byte, error)

SignWithNonce signs the message concatenated with the nonce using a Schnorr signature.

func VerifyWithNonce

func VerifyWithNonce(publicKey kyber.Point, msg []byte, nonce []byte, sig []byte) error

VerifyWithNonce verifies a signature of the message concatenated with the nonce.

Types

type Resource

type Resource struct {
	URL         string
	ContentType string
	Data        []byte
}

Resource is used to store everything is needed about the resource to run the protocol

func FetchAllResources

func FetchAllResources(URL string) ([]*Resource, error)

FetchAllResources fetches the main content and (part of) the files referenced in it

func FetchMainResource

func FetchMainResource(URL string) (*Resource, error)

FetchMainResource fetches the resource referenced by URL and return it as a format-agnostic array of bytes, together with the content type. Note that this function only fetches the main content referenced by the URL and not other contents present in the resource.