signature

README

signature

The signature package serves a centralized module for validating signatures.

Example Usage

package main

import (
    "log"

    "github.com/rddl-network/go-utils/signature"
    "github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
)

func main() {
    privKey := secp256k1.GenPrivKey()
    pubKey := privKey.PubKey()
    
    msg := []byte("msg")
    sign, err := privKey.Sign(msg)
    if err != nil {
        log.Fatalln(err)
    }

    hexMsg := hex.EncodeToString(msg)
    hexSign := hex.EncodeToString(sign)
    hexPublicKey := hex.EncodeToString(pubKey.Bytes())
    
    isValid, err := signature.ValidateSignature(hexMsg, hexSign, hexPublicKey)
    if err != nil {
        log.Fatalln(err)
    }
}

Documentation

Index

• func PublicKeyToUncompressedBytes(pub *ecdsa.PublicKey) []byte
• func UncompressedBytesToPublicKey(b []byte) (*ecdsa.PublicKey, error)
• func ValidateSECP256R1Signature(hexMessage string, hexSignature string, hexPublicKey string) (bool, error)
• func ValidateSignature(hexMessage string, hexSignature string, hexPublicKey string) (bool, error)
• type ECDSASignature

Functions

func PublicKeyToUncompressedBytes

func PublicKeyToUncompressedBytes(pub *ecdsa.PublicKey) []byte

func UncompressedBytesToPublicKey

func UncompressedBytesToPublicKey(b []byte) (*ecdsa.PublicKey, error)

func ValidateSECP256R1Signature

func ValidateSECP256R1Signature(hexMessage string, hexSignature string, hexPublicKey string) (bool, error)

ValidateSECP256R1Signature takes the hex-encoded message together with r, s of the signature (combined as []byte{r.Bytes()..., s.Bytes()...}) and x, y (combined as []byte{0x04, x.Bytes()..., y.Bytes()...}) of the public key

func ValidateSignature

func ValidateSignature(hexMessage string, hexSignature string, hexPublicKey string) (bool, error)

Types

type ECDSASignature

type ECDSASignature struct {
	R, S *big.Int
}