HMACSHA256加密

短命女 2021-09-27 09:16 647阅读 0赞

依靠bouncycastle jar实现HMACSHA256加密  
在pom.xml添加

<dependency>
            <groupId>org.bouncycastle</groupId>
            <artifactId>bcpkix-jdk15on</artifactId>
            <version>1.49</version>
    </dependency>

Demo

import java.io.IOException;
    import java.security.Security;
    import javax.crypto.Mac;
    import javax.crypto.SecretKey;
    import javax.crypto.spec.SecretKeySpec;
    import javax.xml.bind.annotation.adapters.HexBinaryAdapter;
    
    import org.apache.http.ParseException;
    import org.bouncycastle.crypto.RuntimeCryptoException;
    import org.bouncycastle.jce.provider.BouncyCastleProvider;
    
    public class HMACSHA256 { 
        /** * * @param content 加密内容 * @param secret 加密key * @return */
        public static String encrytSHA256(String content, String secret) {
    
            try {
                Security.addProvider(new BouncyCastleProvider());
                SecretKey secretKey = new SecretKeySpec(secret.getBytes("UTF8"), "HmacSHA256");
                Mac mac = Mac.getInstance(secretKey.getAlgorithm());
                mac.init(secretKey);
                byte[] digest = mac.doFinal(content.getBytes("UTF-8"));
                return new HexBinaryAdapter().marshal(digest).toLowerCase();
                // .toLowerCase()小写
                // .toUpperCase();大写
            } catch (Exception e) {
                throw new RuntimeCryptoException("加密异常");
            }
    
        }
    
        public static void main(String[] args) throws ParseException, IOException {
            System.out.println(encrytSHA256("加密内容", "key"));
        }
    
    
    }