/
sign-verify.go
43 lines (36 loc) · 879 Bytes
/
sign-verify.go
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package main
import (
"encoding/json"
"fmt"
kf "github.com/tendermint/tendermint/crypto/secp256k1"
)
type Letter struct {
Msg []byte
Signature []byte
PubKey kf.PubKeySecp256k1
}
func main() {
privSender := kf.GenPrivKey()
pubSender := privSender.PubKey()
msg := []byte("some text to send")
sig, err := privSender.Sign(msg)
if err != nil {
panic(err)
}
fmt.Printf("send msg => %x\n", msg)
fmt.Printf("signature => %x\n", sig)
letter := Letter{msg, sig, pubSender.(kf.PubKeySecp256k1)}
bz, err := json.Marshal(letter)
if err != nil {
panic(err)
}
fmt.Printf("encoded letter => %x\n", bz)
var received Letter
err = json.Unmarshal(bz, &received)
if err != nil {
panic(err)
}
fmt.Printf("decoded letter => %+v\n", received)
valid := received.PubKey.VerifyBytes(received.Msg, received.Signature)
fmt.Printf("validated => %t\n", valid)
}