mirror of
https://github.com/wumansgy/goEncrypt.git
synced 2025-09-27 03:56:16 +08:00
94 lines
2.0 KiB
Go
94 lines
2.0 KiB
Go
package wmgocrypt
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import (
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"crypto/sha256"
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"crypto/rand"
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"encoding/pem"
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"crypto/x509"
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"log"
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"runtime"
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"crypto/ecdsa"
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"math/big"
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)
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/*
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@Time : 2018/11/4 18:51
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@Author : wuman
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@File : EccSign
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@Software: GoLand
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*/
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func init(){
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log.SetFlags(log.Ldate|log.Lshortfile)
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} //处理日志的格式
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func EccSign(msg []byte,Key []byte)([]byte,[]byte){
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// 获取私钥
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//2. pem格式解码
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block, _ := pem.Decode(Key)
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//防止用户传的密钥不正确导致panic,这里恢复程序并打印错误
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defer func(){
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if err:=recover();err!=nil{
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switch err.(type){
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case runtime.Error:
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log.Println("runtime err:",err,"请检查密钥是否正确")
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default:
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log.Println("error:",err)
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}
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}
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}()
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//3.x509解码
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privateKey, _ := x509.ParseECPrivateKey(block.Bytes)
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/*if err!=nil{
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return []byte{},err
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}*/
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// 计算消息的hash值
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myhash := sha256.New()
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myhash.Write(msg)
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resultHash := myhash.Sum(nil)
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//使用私钥对任意长度的hash值（必须是较大信息的hash结果）进行签名，返回签名结果（一对大整数）
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r, s, _ := ecdsa.Sign(rand.Reader, privateKey, resultHash)
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rText, _ := r.MarshalText()
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sText, _ := s.MarshalText()
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return rText,sText
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}
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func EccVerifySign(msg []byte,Key []byte,rText,sText []byte) bool {
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// 获取公钥
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//1. pem格式解码
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block, _ := pem.Decode(Key)
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//防止用户传的密钥不正确导致panic,这里恢复程序并打印错误
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defer func(){
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if err:=recover();err!=nil{
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switch err.(type){
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case runtime.Error:
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log.Println("runtime err:",err,"请检查密钥是否正确")
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default:
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log.Println("error:",err)
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}
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}
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}()
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// x509解码
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publicKeyInterface, _ := x509.ParsePKIXPublicKey(block.Bytes)
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publicKey:=publicKeyInterface.(*ecdsa.PublicKey) //返回的接口类型需要类型断言一下
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myhash := sha256.New()
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myhash.Write(msg)
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resultHash := myhash.Sum(nil)
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var r,s big.Int
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r.UnmarshalText(rText)
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s.UnmarshalText(sText)
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// 校验签名
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result := ecdsa.Verify(publicKey, resultHash, &r, &s)
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return result
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} |