Go?? ECDSA ?? ? ??: ?? ???

Go?? ECDSA(?? ?? ??? ?? ????)? ??? ? ?? ?? ???? ???? ? ?????. ecdsa.GenerateKey ???? ??/?? ? ?? ???? ??? ????? ?? ? ??? ????? ????. ? ?????? Go?? ECDSA ?? ?? ???? ? ???? ?? ??? ??? ??? ????.

??? ?? ???? ?? ???

? ???? ???? ???? ??? ???? ???? ??? ???. ?? ??? ??? ?????. ???? ?? ??? ? ??? ?? ?? Go ?????? ???? ????. ?? ?? ???????? ?? ???? ???? ?? ?? ??? ?????.

PEM ???: ??? ??

PEM(Privacy-Enhanced Mail) ???? ?? ???? ? ?? ??. ?? ??? ?????.

1. ??? ????: ECDSA ????? ? ??? ?????.
2. X.509 ???: ?? ?? ????? ???? X.509 ???? ??????. ???.
3. PEM ??: ??? ?? ??? ? ??? PEM ???? ?????.

??? ? ??? ?

?? ?? ??? PEM? ???? ECDSA ?? ??? ? ????? ??? ?????. ???:

import (
    "crypto/ecdsa"
    "crypto/elliptic"
    "crypto/pem"
    "crypto/rand"
    "fmt"
    "reflect"
)

func encode(privateKey *ecdsa.PrivateKey, publicKey *ecdsa.PublicKey) (string, string) {
    // Marshal the private key to X.509 format
    x509Encoded, _ := x509.MarshalECPrivateKey(privateKey)

    // Encode the X.509-formatted key into PEM format
    pemEncoded := pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: x509Encoded})

    // Marshal the public key to X.509 format
    x509EncodedPub, _ := x509.MarshalPKIXPublicKey(publicKey)

    // Encode the X.509-formatted public key into PEM format
    pemEncodedPub := pem.EncodeToMemory(&pem.Block{Type: "PUBLIC KEY", Bytes: x509EncodedPub})

    return string(pemEncoded), string(pemEncodedPub)
}

func decode(pemEncoded string, pemEncodedPub string) (*ecdsa.PrivateKey, *ecdsa.PublicKey) {
    // Decode the PEM-encoded private key from a string
    block, _ := pem.Decode([]byte(pemEncoded))

    // Extract the X.509-formatted private key from the PEM block
    x509Encoded := block.Bytes

    // Parse the X.509-formatted private key
    privateKey, _ := x509.ParseECPrivateKey(x509Encoded)

    // Decode the PEM-encoded public key from a string
    blockPub, _ := pem.Decode([]byte(pemEncodedPub))

    // Extract the X.509-formatted public key from the PEM block
    x509EncodedPub := blockPub.Bytes

    // Parse the X.509-formatted public key
    genericPublicKey, _ := x509.ParsePKIXPublicKey(x509EncodedPub)

    // Convert the generic public key to an ecdsa.PublicKey
    publicKey := genericPublicKey.(*ecdsa.PublicKey)

    return privateKey, publicKey
}

// Test the encoding and decoding functionality
func test() {
    // Generate an ECDSA key pair
    privateKey, _ := ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
    publicKey := &privateKey.PublicKey

    // Encode the key pair into PEM
    encPriv, encPub := encode(privateKey, publicKey)

    // Decode the PEM-encoded key pair
    priv2, pub2 := decode(encPriv, encPub)

    // Compare the original and decoded keys
    if !reflect.DeepEqual(privateKey, priv2) {
        fmt.Println("Private keys do not match.")
    }
    if !reflect.DeepEqual(publicKey, pub2) {
        fmt.Println("Public keys do not match.")
    }
}

??? ??? ???? ???? Go?? ECDSA ?? ?? ???? ???? ??? ? ????. PEM ???? ???? ?? ???? ? ?? ??? ???? ??? ???????? ?? ???? ???? ??? ???? ?????.

? ??? Go?? ECDSA ?? ?? ??? ???? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!