优秀行业网站,搜索引擎优化实训心得,动画制作器,wordpress仿站教程网数字签名#xff08;又称公钥数字签名#xff09;是一种类似写在纸上的普通的物理签名#xff0c;但是使用了公钥加密领域的技术实现#xff0c;用于鉴别数字信息的方法。关于数字签名的介绍#xff0c;可以参见百度百科#xff1a;http://baike.baidu.com/view/7626.htm… 数字签名又称公钥数字签名是一种类似写在纸上的普通的物理签名但是使用了公钥加密领域的技术实现用于鉴别数字信息的方法。关于数字签名的介绍可以参见百度百科http://baike.baidu.com/view/7626.htm。今天我们就开始学习java中数字签名的使用。 项目结构如下 DSA算法 一、 HuhxDSA.java package com.huhx.security;import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.interfaces.DSAPrivateKey;
import java.security.interfaces.DSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;import org.apache.commons.codec.binary.Hex;/*** writer: huhx*/
public class HuhxDSA {private final static String src http://www.cnblogs.com/huhx;public static void main(String[] args) {// 初始化签名try {KeyPairGenerator keyPairGenerator KeyPairGenerator.getInstance(DSA);keyPairGenerator.initialize(512);KeyPair keyPair keyPairGenerator.generateKeyPair();DSAPublicKey dsaPublicKey (DSAPublicKey) keyPair.getPublic();DSAPrivateKey dsaPrivateKey (DSAPrivateKey) keyPair.getPrivate();// 执行签名PKCS8EncodedKeySpec pkcs8EncodedKeySpec new PKCS8EncodedKeySpec(dsaPrivateKey.getEncoded());KeyFactory keyFactory KeyFactory.getInstance(DSA);PrivateKey privateKey keyFactory.generatePrivate(pkcs8EncodedKeySpec);Signature signature Signature.getInstance(SHA1withDSA);signature.initSign(privateKey);signature.update(src.getBytes());byte[] result signature.sign();System.out.println(jdk dsa sign: Hex.encodeHexString(result));// 验证签名X509EncodedKeySpec x509EncodedKeySpec new X509EncodedKeySpec(dsaPublicKey.getEncoded());keyFactory KeyFactory.getInstance(DSA);PublicKey publicKey keyFactory.generatePublic(x509EncodedKeySpec);signature Signature.getInstance(SHA1withDSA);signature.initVerify(publicKey);signature.update(src.getBytes());boolean bool signature.verify(result);System.out.println(jdk dsa: bool);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}}
} 二、 运行结果如下 jdk dsa sign: 302d0215009461ae45922c11159d3b6dc4c70eb0748763d23202146f5f9a5eedb36a760cf8b9b1d1d1fdc10636aafe
jdk dsa: true RSA算法 一、 HuhxRSA.java package com.huhx.security;import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;import org.apache.commons.codec.binary.Hex;/*** writer: huhx*/
public class HuhxRSA {private final static String src http://www.cnblogs.com/huhx;public static void main(String[] args) {try {// 初始化签名KeyPairGenerator generator KeyPairGenerator.getInstance(RSA);generator.initialize(512);KeyPair keyPair generator.generateKeyPair();RSAPublicKey rsaPublicKey (RSAPublicKey) keyPair.getPublic();RSAPrivateKey rsaPrivateKey (RSAPrivateKey) keyPair.getPrivate();// 执行签名PKCS8EncodedKeySpec encodedKeySpec new PKCS8EncodedKeySpec(rsaPrivateKey.getEncoded());KeyFactory keyFactory KeyFactory.getInstance(RSA);PrivateKey privateKey keyFactory.generatePrivate(encodedKeySpec);Signature signature Signature.getInstance(MD5withRSA);signature.initSign(privateKey);signature.update(src.getBytes());byte[] result signature.sign();System.out.println(jdk rsa sign: Hex.encodeHexString(result));// 验证签名X509EncodedKeySpec x509EncodedKeySpec new X509EncodedKeySpec(rsaPublicKey.getEncoded());keyFactory KeyFactory.getInstance(RSA);PublicKey publicKey keyFactory.generatePublic(x509EncodedKeySpec);signature Signature.getInstance(MD5withRSA);signature.initVerify(publicKey);signature.update(src.getBytes());boolean bool signature.verify(result);System.out.println(jdk rsa: bool);} catch (Exception e) {e.printStackTrace();}}
} 二、 运行结果如下 jdk rsa sign: 564dc7f96c85a7a42e579ae191997c892f234272d220e3f062cf52071e827164fadd52720b69704979fc11810bdbf92b01dd3f5f26a621ffe699ef601d08fb6c
jdk rsa: true ECDSA算法 一、 HuhxECDSA.java package com.huhx.security;import java.security.KeyFactory;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.Signature;
import java.security.interfaces.ECPrivateKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;import org.apache.commons.codec.binary.Hex;/*** writer: huhx*/
public class HuhxECDSA {private final static String src mhttp://www.cnblogs.com/huhx;public static void main(String[] args) {try {// 初始化签名KeyPairGenerator generator KeyPairGenerator.getInstance(EC);generator.initialize(256);KeyPair keyPair generator.generateKeyPair();ECPublicKey ecPublicKey (ECPublicKey) keyPair.getPublic();ECPrivateKey ecPrivateKey (ECPrivateKey) keyPair.getPrivate();// 执行签名PKCS8EncodedKeySpec encodedKeySpec new PKCS8EncodedKeySpec(ecPrivateKey.getEncoded());KeyFactory keyFactory KeyFactory.getInstance(EC);PrivateKey privateKey keyFactory.generatePrivate(encodedKeySpec);Signature signature Signature.getInstance(SHA1withECDSA);signature.initSign(privateKey);signature.update(src.getBytes());byte[] result signature.sign();System.out.println(jdk ecdsa sign: Hex.encodeHexString(result));// 验证签名X509EncodedKeySpec x509EncodedKeySpec new X509EncodedKeySpec(ecPublicKey.getEncoded());keyFactory KeyFactory.getInstance(EC);PublicKey publicKey keyFactory.generatePublic(x509EncodedKeySpec);signature Signature.getInstance(SHA1withECDSA);signature.initVerify(publicKey);signature.update(src.getBytes());boolean bool signature.verify(result);System.out.println(jdk ecdsa: bool);} catch (Exception e) {e.printStackTrace();}}
} 二、 运行结果如下 jdk ecdsa sign: 30460221009b80596c51ccdf19c5e8e825aca6d85e549a30ee72a1e9b094f7b3a8c8b9310902210098e8dcc6ea932142d8cd9dd80c08fff7359f796571f8a973d3ca6e2dc0931904
jdk ecdsa: true 友情链接 转载于:https://www.cnblogs.com/huhx/p/javaSignature.html
