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GetPublicKey.java
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103 lines (86 loc) · 2.77 KB
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package signer;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
/**
* 获取公钥
* @author Administrator
*
*/
public class GetPublicKey {
/**
* Java密钥库(Java Key Store，JKS)KEY_STORE
*/
public static final String KEY_STORE = "JKS";
public static final String X509 = "X.509";
public static void main(String[] args){
String keystorePath = "C:/Users/Administrator/Desktop/class/signer/ijvmkeys";
String keyStorePwd = "ijvm2ed";
String keyAlias = "friend";
String keyPwd = "friend4life";
byte[] publicKey = getPublickKey(keystorePath, keyStorePwd, keyAlias);
byte[] privateKey = getPrivateKey(keystorePath, keyStorePwd, keyAlias, keyPwd);
System.out.println("publicKey : " + toString(publicKey));
System.out.println("privateKey : " + toString(privateKey));
}
public static KeyStore getKeyStore(String keystorePath,String storePwd){
KeyStore keystore = null;
try {
keystore = KeyStore.getInstance(KEY_STORE);
keystore.load(new FileInputStream(keystorePath), storePwd.toCharArray());
} catch (KeyStoreException e) {
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (CertificateException e) {
e.printStackTrace();
}catch(IOException e){
e.printStackTrace();
}
return keystore;
}
/**
* 获取私钥
* @param keystorePath
* @param storePwd
* @param keyAlias
* @param keyPwd
* @return
*/
public static byte[] getPrivateKey(String keystorePath,String storePwd,String keyAlias,String keyPwd){
KeyStore keyStore = getKeyStore(keystorePath, storePwd);
PrivateKey pk = null;
try {
pk = (PrivateKey)keyStore.getKey(keyAlias, keyPwd.toCharArray());
return pk.getEncoded();
} catch (UnrecoverableKeyException | KeyStoreException | NoSuchAlgorithmException e) {
e.printStackTrace();
}
return null;
}
public static byte[] getPublickKey(String keystorePath,String storePwd,String keyAlias){
KeyStore keyStore = getKeyStore(keystorePath, storePwd);
PublicKey pk = null;
try {
pk = (PublicKey)keyStore.getCertificate(keyAlias).getPublicKey();
return pk.getEncoded();
} catch (KeyStoreException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
private static String toString(byte[] data){
String str = "";
for(byte b:data){
str = str + b;
}
return str;
}
}