英文:
How to convert data type ECDSA private key in Go
问题
我正在使用ecdsa.GenerateKey方法在Go语言中生成私钥对。我想通过套接字编程发送我的私钥（priva），并且可以从其他程序中读取另一个私钥（privb）。
priva, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
_, err = connection.Write([]byte(priva))
buffer := make([]byte, 1024)
mLen, err := connection.Read(buffer)
if err != nil {
fmt.Println("Error reading:", err.Error())
}
privb := buffer[:mLen]
这是我用于发送和接收数据的代码，但是我无法发送我的私钥（priva），因为它的类型无法更改。如何修复这个问题，或者是否有推荐的方法来发送/接收数据？
英文:
I am using the ecdsa.GenerateKey method to generate a private key pair in Go. I would like to send my private key(priva) with socket programming and can read other private key(privb) from other program.
priva, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
_, err = connection.Write([]byte(priva))
buffer := make([]byte, 1024)
mLen, err := connection.Read(buffer)
if err != nil {
fmt.Println("Error reading:", err.Error())
}
privb := buffer[:mLen]
There is my code to send data and read data to/from other program, but i can't send my private key(priva) because it can't change the types. How to fixed, or is there a recommended way to send/read the data ?
答案1
得分: 1
*ecdsa.PrivateKey 不能直接通过网络发送。它必须首先被编组为 []byte。
您可以使用 x509.MarshalECPrivateKey 将其编组为 DER 格式，然后使用 x509.ParseECPrivateKey 进行解组。
例如：
package main
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"fmt"
)
func main() {
priv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
derBuf, _ := x509.MarshalECPrivateKey(priv)
// 将 []byte 传输到新位置。
privCopy, _ := x509.ParseECPrivateKey(derBuf)
fmt.Println(priv.Equal(privCopy))
/// 输出: true
}
注意：此示例未提供有关私钥的任何额外安全性。您可能希望确保传输/协议处理符合您的安全需求。
英文:
The *ecdsa.PrivateKey cannot be directly sent over the network. It must be marshalled into a []byte first.
You can use x509.MarshalECPrivateKey to marshal into DER format, and x509.ParseECPrivateKey to unmarshal.
For example:
package main
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"fmt"
)
func main() {
priv, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
derBuf, _ := x509.MarshalECPrivateKey(priv)
// Transfer []byte to new location.
privCopy, _ := x509.ParseECPrivateKey(derBuf)
fmt.Println(priv.Equal(privCopy))
/// Output: true
}
Note: this example doesn't provide any additional security around the private key. You may want to ensure the transfer/protocol handling is appropriate for your security needs.
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