Server : LiteSpeed System : Linux us-phx-web1202.main-hosting.eu 4.18.0-553.84.1.lve.el8.x86_64 #1 SMP Tue Nov 25 18:33:03 UTC 2025 x86_64 User : u615232177 ( 615232177) PHP Version : 8.1.33 Disable Function : NONE Directory :  /opt/golang/1.22.0/src/crypto/ecdsa/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package ecdsa_test

import (
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/sha256"
	"fmt"
)

func Example() {
	privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		panic(err)
	}

	msg := "hello, world"
	hash := sha256.Sum256([]byte(msg))

	sig, err := ecdsa.SignASN1(rand.Reader, privateKey, hash[:])
	if err != nil {
		panic(err)
	}
	fmt.Printf("signature: %x\n", sig)

	valid := ecdsa.VerifyASN1(&privateKey.PublicKey, hash[:], sig)
	fmt.Println("signature verified:", valid)
}