在一個用go和android的聊天項目中，我想使用RSA進行加密我如何在 go 中創建私鑰和公鑰以發送到 android ？我嘗試了很多方法，但在 android 中當我想解析公鑰 Android 時給出錯誤? public static PublicKey stringToPublicKeytoserver(String publicKeyString)? ? {? ? ? ? try {? ? ? ? ? ? publicKeyString = publicKeyString.replace("-----BEGIN PUBLIC KEY-----", "");? ? ? ? ? ? publicKeyString = publicKeyString.replace("-----END PUBLIC KEY-----", "");? ? ? ? ? ? byte[] keyBytes = Base64.decode(publicKeyString, Base64.DEFAULT);? ? ? ? ? ? X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);? ? ? ? ? ? KeyFactory keyFactory = KeyFactory.getInstance(RSA);? ? ? ? ? ? serveruk=keyFactory.generatePublic(spec);? ? ? ? ? ? return serveruk;? ? ? ? } catch (NoSuchAlgorithmException | InvalidKeySpecException e) {? ? ? ? ? ? e.printStackTrace();? ? ? ? ? ? return null;? ? ? ? }? ? }安卓錯誤java.security.spec.InvalidKeySpecException：com.android.org.conscrypt.OpenSSLX509CertificateFactory$ParsingException：解析公鑰時出錯密鑰生成? ?// Generate RSA Keys? ?miryanPrivateKey, err := rsa.GenerateKey(rand.Reader, 1024)? ?fatal(err)? ?// save PEM file? ?pemfile, err := os.Create("public.pem")? ?if err != nil {? ? ? ?fmt.Println(err)? ? ? ?os.Exit(1)? ?}? ?//publi := &miryanPrivateKey.PublicKey? ?// http://golang.org/pkg/encoding/pem/#Block? ?var pemkey = &pem.Block{? ? ? ?Type : "PUBLIC KEY",? ? ? ?Bytes : x509.MarshalPKCS1PublicKey(&miryanPrivateKey.PublicKey)}? ?err = pem.Encode(pemfile, pemkey)? ?if err != nil {? ? ? ?fmt.Println(err)? ? ? ?os.Exit(1)? ?}? ?pemfile.Close()? ?//and even i use function to convert toPKCS8? ?byt, _:= MarshalPKCS8PublicKey(&miryanPrivateKey.PublicKey)? ?var pemkey = &pem.Block{? ? ? ?Type : "PUBLIC KEY",? ? ? ?Bytes : byt}}我認為我的主要問題是，去使用 pkcs1 但 android 使用 pkcs8
1 回答
紫衣仙女
TA貢獻1839條經驗 獲得超15個贊
我修復它 ！
我使用以下 Go 代碼生成公鑰和私鑰：
/*
* Genarate rsa keys.
*/
package main
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/gob"
"encoding/pem"
"fmt"
"os"
)
func main() {
reader := rand.Reader
bitSize := 2048
key, err := rsa.GenerateKey(reader, bitSize)
checkError(err)
publicKey := key.PublicKey
saveGobKey("private.key", key)
savePEMKey("private.pem", key)
saveGobKey("public.key", publicKey)
savePublicPEMKey("public.pem", publicKey)
}
func saveGobKey(fileName string, key interface{}) {
outFile, err := os.Create(fileName)
checkError(err)
defer outFile.Close()
encoder := gob.NewEncoder(outFile)
err = encoder.Encode(key)
checkError(err)
}
func savePEMKey(fileName string, key *rsa.PrivateKey) {
outFile, err := os.Create(fileName)
checkError(err)
defer outFile.Close()
var privateKey = &pem.Block{
Type: "PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(key),
}
err = pem.Encode(outFile, privateKey)
checkError(err)
}
func savePublicPEMKey(fileName string, pubkey rsa.PublicKey) {
asn1Bytes, err := x509.MarshalPKIXPublicKey(&pubkey)
checkError(err)
var pemkey = &pem.Block{
Type: "PUBLIC KEY",
Bytes: asn1Bytes,
}
pemfile, err := os.Create(fileName)
checkError(err)
defer pemfile.Close()
err = pem.Encode(pemfile, pemkey)
checkError(err)
}
func checkError(err error) {
if err != nil {
fmt.Println("Fatal error ", err.Error())
os.Exit(1)
}
}
然后我用 GO 中生成的公鑰在 android 中加密我的消息：
static PublicKey serveruk;
public final static String chi="RSA/ECB/OAEPPadding";
public final static String RSA = "RSA";
private final static int CRYPTO_BITS = 512;
String pubPEM = "public key from public.pem";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
stringToPublicKeytoserver(pubPEM);
Log.e("ENCODED", enc4golang("Please hide me !"));
}
public static PublicKey stringToPublicKeytoserver(String publicKeyString)
{
try {
publicKeyString = publicKeyString.replace("-----BEGIN PUBLIC KEY-----", "");
publicKeyString = publicKeyString.replace("-----END PUBLIC KEY-----", "");
byte[] keyBytes = Base64.decode(publicKeyString, Base64.DEFAULT);
X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
KeyFactory keyFactory = KeyFactory.getInstance(RSA);
serveruk=keyFactory.generatePublic(spec);
return serveruk;
} catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
e.printStackTrace();
return null;
}
}
private static byte[] enc4golang(String text, PublicKey pubRSA) throws Exception{
Cipher cipher = Cipher.getInstance(chi);
cipher.init(Cipher.ENCRYPT_MODE, pubRSA);
return cipher.doFinal(text.getBytes("UTF-8")); //i also advice you to use: .getBytes("UTF-8"); instead of data.getBytes();
}
public final static String enc4golang(String text){
try {
return Base64.encodeToString(enc4golang(text, serveruk) ,Base64.DEFAULT); //send this string to golang
}
catch(Exception e)
{
e.printStackTrace();
}
return null;
}
然后我用這個 GO 代碼解密它：
package main
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha1"
"crypto/x509"
"encoding/base64"
"encoding/pem"
)
func main(){
const priPEM = `private key from private.pem`
const pubPEM = `public key from public.pem`
base64DecodeBytes, err := base64.StdEncoding.DecodeString("encrypted data from android")
if err != nil {
panic(err)
}
privateKeyBlock, _ := pem.Decode([]byte(priPEM))
var pri *rsa.PrivateKey
pri, parseErr := x509.ParsePKCS1PrivateKey(privateKeyBlock.Bytes)
if parseErr != nil {
panic(parseErr)
}
decryptedData, decryptErr := rsa.DecryptOAEP(sha1.New(), rand.Reader, pri, base64DecodeBytes, nil)
if decryptErr != nil {
panic(decryptErr)
}
print(string(decryptedData))
}
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