本文實(shí)例講述了Java數(shù)字簽名算法DSA。分享給大家供大家參考,具體如下:
武川ssl適用于網(wǎng)站、小程序/APP、API接口等需要進(jìn)行數(shù)據(jù)傳輸應(yīng)用場景,ssl證書未來市場廣闊!成為成都創(chuàng)新互聯(lián)的ssl證書銷售渠道,可以享受市場價(jià)格4-6折優(yōu)惠!如果有意向歡迎電話聯(lián)系或者加微信:18982081108(備注:SSL證書合作)期待與您的合作!一、介紹
DSS:Digital Signature Standard 數(shù)字簽名標(biāo)準(zhǔn)
DSA:Digital Signature Algorithm 數(shù)字簽名算法
DSA僅包含數(shù)字簽名
二、參數(shù)說明
三、代碼實(shí)現(xiàn)
package com.imooc.security.dsa; 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; public class ImoocDSA { private static String src = "cakin24 security dsa"; public static void main(String[] args) { jdkDSA(); } public static void jdkDSA() { try { //1.初始化密鑰 KeyPairGenerator keyPairGenerator = KeyPairGenerator.getInstance("DSA"); keyPairGenerator.initialize(512); KeyPair keyPair = keyPairGenerator.generateKeyPair(); DSAPublicKey dsaPublicKey = (DSAPublicKey) keyPair.getPublic(); DSAPrivateKey dsaPrivateKey = (DSAPrivateKey)keyPair.getPrivate(); //2.執(zhí)行簽名 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)); //3.驗(yàn)證簽名 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 verify : " + bool); } catch (Exception e) { e.printStackTrace(); } } }
本文標(biāo)題:Java數(shù)字簽名算法DSA實(shí)例詳解-創(chuàng)新互聯(lián)
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