keyring

package module
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 Go to latest Published: Jun 14, 2022 License: Apache-2.0 Imports: 13 Imported by: 3

README

go-keyring

Implement go utilities compatible with Substrate sr25519 keys.

usage

package main

import (
	"fmt"
	"log"

	keyring "github.com/CESSProject/go-keyring"
)

func main() {
	// generate keyring from secret uri
	secretURI := "head achieve piano online exhaust bulk trust vote inflict room keen maximum"
	kr, _ := keyring.FromURI(secretURI, keyring.NetSubstrate{})

	// output public SS58 formatted address
	ss58, _ := kr.SS58Address()
	log.Printf("SS58 Address: %s", ss58)

	// sign message
	msg := []byte("test message")
	sig, _ := kr.Sign(kr.SigningContext(msg))

	// create new keyring from SS58 public address to verify message signature
	verkr, _ := keyring.FromURI(ss58, keyring.NetSubstrate{})

	fmt.Println(verkr.Verify(verkr.SigningContext(msg), sig))
}

Documentation

Index

Constants

View Source 
const (
	// MiniSecretKeyLength is the length of the MiniSecret Key
	MiniSecretKeyLength = 32

	// SecretKeyLength is the length of the SecretKey
	SecretKeyLength = 64
)

Variables

View Source 
var (
	ErrDecodingSecretHex = errors.New("Error decoding secret hex phrase")
	ErrUnknownPhraseType = errors.New("SURI phrase type is unknown or not set")
	ErrSeedNotAvailable  = errors.New("Unable to get seed from public address data")
	ErrInvalidWordCount  = errors.New("An invalid WordCount was given, valid values are 12, 15, 18, 21, or 24")
	ErrNonMnemonic       = errors.New("Error KeyRing was generated from non mnemonic source")
)
View Source 
var (

	// Errors
	ErrInvalidSURIFormat = errors.New("Secret URI format is invalid")
	ErrEmptyPhrase       = errors.New("The parsed Secret URI has an empty phrase")
	ErrInvalidByteLength = errors.New("An invalid number of bytes has been given")
)

Functions

func DecodeHex 

func DecodeHex(str string, prefix HexPrefix) (seed []byte, ok bool)

DecodeHex decodes the hex string to bytes and truncates any prefix used

func DecodeSS58Address 

func DecodeSS58Address(addr string, net Network, ctype ChecksumType) ([32]byte, error)

DecodeSS58Address takes a string and checks if it is a validly encoded SS58 address and returns the raw address in bytes

func EncodeHex 

func EncodeHex(raw []byte, prefix HexPrefix) string

EncodeHex encodes the raw bytes into a hex encoded string and appends any prefix required

func SS58Address 

func SS58Address(addr [32]byte, net Network, ctype ChecksumType) (string, error)

SS58Address derives ss58 address from the address, network, and checksumType

Types

type ChecksumType 

type ChecksumType int

ChecksumType represents the one or more checksum types. 

const (

	// SS58Checksum uses the concat(address-type, address) as blake2b hash pre-image
	SS58Checksum ChecksumType = iota
	// AccountID uses the address as the blake2b hash pre-image
	AccountID
)

type DerivablePrivateKey 

type DerivablePrivateKey bool

DerivablePrivateKey indicates if the returned sr25519.DerivableKey is a PublicKey or SecretKey

type HexPrefix 

type HexPrefix string

HexPrefix defines a prefix used in the hex encoded output

type KeyRing 

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

KeyRing defines a key pair from a derive Secret URI

func FromPublic 

func FromPublic(b [32]byte, net Network) (*KeyRing, error)

FromPublic returns a KeyRing from the raw bytes of a public key

func FromURI 

func FromURI(str string, net Network) (*KeyRing, error)

FromURI returns a KeyRing from the given Secret URI

func Generate 

func Generate(words int, net Network) (*KeyRing, error)

Generate creates a new KeyRing with a randomly created mnemonic of the specified number of words

func (*KeyRing) Mnemonic 

func (k *KeyRing) Mnemonic() (string, error)

Mnemonic returns the mnemonic phrase if the KeyRing was generated by a mnemonic phrase or an error if generated by other source

func (*KeyRing) Public 

func (k *KeyRing) Public() [32]byte

Public returns the public key in raw bytes

func (*KeyRing) PublicHex 

func (k *KeyRing) PublicHex() string

PublicHex returns the public key hex encoded

func (*KeyRing) SS58Address 

func (k *KeyRing) SS58Address() (string, error)

SS58Address returns the public key encoded as a SS58 address

func (*KeyRing) Secret 

func (k *KeyRing) Secret() [32]byte

Secret returns the private secret key in raw bytes

func (*KeyRing) SecretHex 

func (k *KeyRing) SecretHex() string

SecretHex returns the private secret key hex encoded

func (*KeyRing) Seed 

func (k *KeyRing) Seed() ([32]byte, error)

Seed returns the seed generated from the mnemonic in raw bytes

func (*KeyRing) SeedHex 

func (k *KeyRing) SeedHex() (string, error)

SeedHex returns the seed generated from the mnemonic hex encoded

func (*KeyRing) Sign 

func (k *KeyRing) Sign(t *merlin.Transcript) (signature [64]byte, err error)

Sign signs the message using the secret key

func (*KeyRing) SigningContext 

func (k *KeyRing) SigningContext(msg []byte) *merlin.Transcript

SigningContext returns the transcript used for message signing for the Network set

func (*KeyRing) Verify 

func (k *KeyRing) Verify(t *merlin.Transcript, signature [64]byte) bool

Verify the message against the signature

func (*KeyRing) VrfSign 

func (k *KeyRing) VrfSign(t *merlin.Transcript) (output [32]byte, proof [64]byte, err error)

VrfSign creates a signed output and proof

func (*KeyRing) VrfVerify 

func (k *KeyRing) VrfVerify(t *merlin.Transcript, output [32]byte, proof [64]byte) (
	bool, error)

VrfVerify verifies if the given proof and output are valid against the public key

type NetSubstrate 

type NetSubstrate struct{}

NetSubstrate implements the Network interface to define Substrates mainnet settings

func (NetSubstrate) AddressPrefix 

func (n NetSubstrate) AddressPrefix() HexPrefix

AddressPrefix returns a prefix to apply to hex encoded addresses for public key and private seed

func (NetSubstrate) ChecksumEnd 

func (n NetSubstrate) ChecksumEnd() int

ChecksumEnd is the end byte position of the blake2d checksum calculated when generating the SS58 address checksum

func (NetSubstrate) ChecksumStart 

func (n NetSubstrate) ChecksumStart() int

ChecksumStart is the starting byte position of the blake2d checksum calculated when generating the SS58 address checksum

func (NetSubstrate) Name 

func (n NetSubstrate) Name() string

Name returns the network name used in the KeyRing SigningContext transcript

func (NetSubstrate) Version 

func (n NetSubstrate) Version() uint8

Version returns the network version number used in SS58 address formatting

type Network 

type Network interface {
	// Name returns the network name used in the KeyRing SigningContext transcript
	Name() string
	// Version returns the network version number used in SS58 address formatting
	// see https://github.com/paritytech/substrate/wiki/External-Address-Format-(SS58)#checksum-types
	// section Address Type
	Version() uint8
	// AddressPrefix returns a prefix to apply to hex encoded addresses for
	// public key and private seed
	AddressPrefix() HexPrefix
	// ChecksumStart is the starting byte position of the blake2d checksum
	// calculated when generating the SS58 address checksum.  Valid ranges
	// are 0 to 30.  Standard value is 0.
	ChecksumStart() int
	// ChecksumEnd is the end byte position of the blake2d checksum
	// calculated when generating the SS58 address checksum.  Valid ranges
	// are 2 to 32, where ChecksumEnd must be a higher number than
	// ChecksumStart.  Standard value is 2.
	ChecksumEnd() int
}

Network defines the interface for a specific networks settings to be used for key generation and address formatting

type PhraseType 

type PhraseType int

PhraseType specifies the type of data that was passed as the phrase component in a Secret URI 

const (
	SecretHex PhraseType = iota + 1
	SS58Public
	Mnemonic
	RawPublicKey
)

type SecretURI 

type SecretURI struct {
	Phrase   string
	Path     string
	Password string
	Network  Network
	Type     PhraseType
}

SecretURI defines a struct consisting of the parts of a Secret URI

func NewSecretURI 

func NewSecretURI(suri string, net Network) (*SecretURI, error)

NewSecretURI takes a given string Secret URI and splits it into Phrase, Path, and Password components given the format <phrase><path>///<password> and returns it as a struct

func (*SecretURI) DerivableKey 

func (s *SecretURI) DerivableKey() (sr25519.DerivableKey, DerivablePrivateKey, error)

DerivableKey returns a DerivableKey from the Secret URI

func (*SecretURI) GetJunctions 

func (s *SecretURI) GetJunctions() ([]*junction, error)

GetJunctions returns the junction parts of the path component of the Secret URI.

type WordCount 

type WordCount int

WordCount defines the type for specifying the number of words in a mnemonic. Valid values are 12, 15, 18, 21, or 24 words

Source Files

View all Source files

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