RsaUtil 生成公私钥
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.SignatureException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.ssl.PKCS8Key;
import com.froad.openapi.util.RSAUtil;
import com.froad.platform.logger.Logger;
import com.froad.platform.logger.LoggerManager;
public class RsaUtil {
???
??? private static Logger Log = LoggerManager.getLogger(RsaUtil.class.getName());
???
??? /**
??? ? * 方法描述：初始化私钥
??? ? * @param: String str
??? ? * @return: PublicKey
??? ? * @version: 1.0
? ??? ? * @time: 2011-12-7 上午9:11:15
??? ? */
??? public static PrivateKey initPrivateKey(String path, String pwd) {
??? ??? try {
??? ??? ???
??? ??? ??? KeyFactory keyFactory = KeyFactory.getInstance("RSA");
??? ??? ???
??? ??? ??? File file = new File(path);
??? ??? ??? byte[] b = null;
??? ??? ??? InputStream in = new FileInputStream(file);
??? ??? ??? PKCS8Key pkcs8 = new PKCS8Key(in, pwd.toCharArray());
??? ??? ??? b = pkcs8.getDecryptedBytes();
??? ??? ??? PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(b);
??? ??? ??? PrivateKey prikey = keyFactory.generatePrivate(keySpec);
??? ??? ??? return prikey;
??? ??? ???
??? ??? } catch (NoSuchAlgorithmException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化私钥无此算法");
??? ??? } catch (FileNotFoundException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化私钥文件未找到");
??? ??? } catch (GeneralSecurityException e) {
??? ??? ??? Log.info("初始化私钥安全异常");
??? ??? ??? e.printStackTrace();
??? ??? } catch (IOException e) {
??? ??? ??? Log.info("初始化私钥IO异常");
??? ??? ??? e.printStackTrace();
??? ??? } catch (Exception e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化私钥异常");
??? ??? }
??? ??? return null;
??? }
???
??? /**
??? ? * 方法描述：初始化公钥
??? ? * @param: String str
??? ? * @return: PublicKey
??? ? * @version: 1.0
??? ? * @time: 2011-12-7 上午9:11:15
??? ? */
??? public static PublicKey initPublicKey(String str) {
??? ??? KeyFactory keyFactory;
??? ??? try {
??? ??? ??? keyFactory = KeyFactory.getInstance("RSA");
??? ??? ??? X509EncodedKeySpec keySpec = new X509EncodedKeySpec((Base64.decodeBase64(str)));
??? ??? ??? PublicKey pubkey = keyFactory.generatePublic(keySpec);
??? ??? ??? return pubkey;
??? ??? } catch (NoSuchAlgorithmException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化公钥无此算法");
??? ??? } catch (InvalidKeySpecException e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化公钥无效的密钥规范");
??? ??? } catch (Exception e) {
??? ??? ??? e.printStackTrace();
??? ??? ??? Log.info("初始化公钥异常");
??? ??? }
??? ??? return null;
??? }
??? /**
??? ? * 方法描述：签名
??? ? * @param: String content, PrivateKey key, String charsetSet
??? ? * @return: String
??? ? * @version: 1.0
??? ? * @time: 2011-12-7 上午9:12:48
??? ? */
??? public static String signPrivateKey(String content, PrivateKey key, String charsetSet) throws NoSuchAlgorithmException,
??? ??? ??? IOException, InvalidKeySpecException, InvalidKeyException, SignatureException {
??? ??? PrivateKey prikey = key;
??? ??? Signature signature = Signature.getInstance("SHA1WithRSA");
??? ??? signature.initSign(prikey);
??? ??? signature.update(content.getBytes(charsetSet));
??? ??? byte[] signBytes = signature.sign();
??? ??? String sign = new String(Base64.encodeBase64(signBytes));
??? ??? return sign;
??? }
??? /**
??? ? * 方法描述：验签
??? ? * @param: String content, String sign,PublicKey key,String charsetSet
??? ? * @return: boolean
??? ? * @version: 1.0
??? ? * @time: 2011-12-7 上午9:28:04
??? ? */
??? public static boolean verifyPublicKey(String content, String sign, PublicKey key,
??? ??? ??? String charsetSet) throws NoSuchAlgorithmException, IOException,
??? ??? ??? InvalidKeySpecException, InvalidKeyException, SignatureException {
??? ??? PublicKey pubkey = key;
??? ??? byte[] signed = Base64.decodeBase64(sign.getBytes());
??? ??? Signature signature = Signature.getInstance("SHA1WithRSA");
??? ??? signature.initVerify(pubkey);
??? ??? signature.update(content.getBytes(charsetSet));
??? ??? return signature.verify(signed);
??? }
??? /**
??? ? * 方法描述：签名
??? ? * @param: String content, PrivateKey key
??? ? * @return: String
??? ? * @version: 1.0
???? ? * @time: 2011-12-7 上午9:22:21
??? ? */
??? public static String signPrivateKey(String content, PrivateKey key) throws NoSuchAlgorithmException, IOException,
??? InvalidKeySpecException, InvalidKeyException, SignatureException {
??? ??? PrivateKey prikey = key;
??? ??? Signature signature = Signature.getInstance("SHA1WithRSA");
??? ??? signature.initSign(prikey);
??? ??? signature.update(content.getBytes("UTF-8"));
??? ??? byte[] signBytes = signature.sign();
??? ??? String sign = new String(Base64.encodeBase64(signBytes));
??? ???
??? ??? return sign;
??? }
??? /**
??? ? * 方法描述：验签
??? ? * @param: String content, String sign,PublicKey key
??? ? * @return: boolean
??? ? * @version: 1.0
??? ? * @time: 2011-12-7 上午9:25:05
??? ? */
??? public static boolean verifyPublicKey(String content, String sign, PublicKey key)
??? ??? ??? throws NoSuchAlgorithmException, IOException,
??? ??? ??? InvalidKeySpecException, InvalidKeyException, SignatureException {
??? ??? PublicKey pubkey = key;
??? ??? byte[] signed = Base64.decodeBase64(sign.getBytes());
??? ??? Signature signature = Signature.getInstance("SHA1WithRSA");
??? ??? signature.initVerify(pubkey);
??? ??? signature.update(content.getBytes("UTF-8"));
??? ??? return signature.verify(signed);
??? }
??? public static void main(String[] args) throws InvalidKeyException, NoSuchAlgorithmException, Exception, Exception, Exception {
??? ??? String sr = "dasasdas";
??? ??? PrivateKey pk = initPrivateKey("D:\\secretkey\\OpenSSL\\bin\\test_private_key.key", "12345");
??? ??? String msg = signPrivateKey(sr, pk,"utf-8");
??? ??? System.out.println(msg);
??? ???
//??? ??? String publickey = "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDhaRco+RYyPOmnTmT+YO6svwP9bZoNY0mWm4/saGfRbWVeIleoxOKMII7S3/ZG1816pB2OJ04hT0DCad/kcPdyh1uCgISKQa5mhZfnzuNEV4P+IJM5GITf7h6PRIhOZD+XwpZbjYKyon+NJQyUdNtQslnJ+dOM8Gi59o7aGYXtAQIDAQAB";
??? ???
??? ??? PublicKey pubk = initPublicKey("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCp25k4FVKXP8uhTCykknGKRWpNWonmBWuqFx2ZdWJ+pzw9ndg957X8kAXSeyii0Bef2hXWRJwdveY//XuEdRRuQr99ycOHuiSwj4Mt6S/nKf7unDWKBeVEGcSXBQNQEciiCFOVb7stSkqQ2aBms6uHQexeTjz7MFKsXT3cFBwCpwIDAQAB");
??? ???
??? ??? boolean b = verifyPublicKey(sr, msg, pubk);
??? ???
??? ??? System.out.println(b);
??? }
}
