mirror of
https://github.com/wumansgy/goEncrypt.git
synced 2025-09-27 03:56:16 +08:00
92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
package goEncrypt
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import (
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"log"
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"crypto/rand"
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"encoding/pem"
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"runtime"
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"crypto/x509"
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"crypto/ecdsa"
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)
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/*
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@Time : 2018/11/4 16:43
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@Author : wuman
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@File : EccCrypt
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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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//Ecc椭圆曲线的公钥加密，如果要解密对应着私钥解密
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/*func EccEnCrypt(plainText []byte,prv2 *ecies.PrivateKey)(crypText []byte,err error){
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ct, err := ecies.Encrypt(rand.Reader, &prv2.PublicKey, plainText, nil, nil)
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return ct, err
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}
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//直接解密
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func EccDeCrypt(cryptText []byte,prv2 *ecies.PrivateKey) ([]byte, error) {
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pt, err := prv2.Decrypt(cryptText, nil, nil)
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return pt, err
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}*/
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//传入公钥和明文用来加密
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func EccPublicEncrypt(plainText []byte,key []byte)( cryptText []byte,err error){ //用私钥解密
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//1. pem 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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//2. block中的Bytes是x509编码的内容, x509解码
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tempPublicKey, _ := x509.ParsePKIXPublicKey(block.Bytes)
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//解码得到ecdsa包中的私钥
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//类型断言
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publicKey1:=tempPublicKey.(*ecdsa.PublicKey)
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//转换为以太坊包中的ecies包中的私钥
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publicKey:=ImportECDSAPublic(publicKey1)
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//用私钥来解密密文
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crypttext,err:=Encrypt(rand.Reader, publicKey, plainText, nil, nil)
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return crypttext,err
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}
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//传入私钥和明文用来解密
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func EccPrivateDeCrypt(cryptText []byte,key []byte)( msg []byte,err error){ //用私钥解密
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//1. pem 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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//2. block中的Bytes是x509编码的内容, x509解码
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tempPrivateKey, _ := x509.ParseECPrivateKey(block.Bytes)
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//解码得到ecdsa包中的私钥
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//转换为以太坊包中的ecies包中的私钥
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privateKey:=ImportECDSA(tempPrivateKey)
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//用私钥来解密密文
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plainText,err:=privateKey.Decrypt(cryptText,nil,nil)
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return plainText,err
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} |