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getEccKey.go
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/
getEccKey.go
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package main
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"encoding/pem"
"log"
"os"
)
/*
@Time : 2018/11/4 16:43
@Author : wuman
@Time : 2020/4/3 14:53
@Editor : greebear
*/
const (
defaultEccPrivateFileName="eccprivate.pem"
defaultEccPublishFileName="eccpublic.pem"
defaultEccPrivateKeyPrefix="ECC PRIVATE KEY"
defaultEccPublicKeyPrefix="ECC PUBLIC KEY"
)
func init(){
log.SetFlags(log.Ldate|log.Lshortfile)
}
func GetEccKey() error{
privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err!=nil{
return err
}
// x509PrivateKey
x509PrivateKey, err := x509.MarshalECPrivateKey(privateKey)
if err!=nil{
return err
}
block := pem.Block{
Type: defaultEccPrivateKeyPrefix,
Bytes: x509PrivateKey,
}
file, err := os.Create(defaultEccPrivateFileName)
if err!=nil{
return err
}
defer file.Close()
if err=pem.Encode(file, &block);err!=nil{
return err
}
// x509PublicKey
x509PublicKey, err := x509.MarshalPKIXPublicKey(&privateKey.PublicKey)
if err!=nil {
return err
}
publicBlock := pem.Block{
Type: defaultEccPublicKeyPrefix,
Bytes: x509PublicKey,
}
publicFile, err := os.Create(defaultEccPublishFileName)
if err!=nil {
return err
}
defer publicFile.Close()
if err=pem.Encode(publicFile,&publicBlock);err!=nil{
return err
}
return nil
}