JAVA HMAC SHA256位加密算法

淩亂°似流年 2023-10-04 08:46 26阅读 0赞

import javax.crypto.Mac;
    import javax.crypto.spec.SecretKeySpec;
    
    public class HMAC {
        public static void main(String[] args) throws Exception {
            String s=HMACSHA256("123","21+20t4jm4DlkMv3nA5OSf76GrH+ifEORkO3T2yztec=");
            System.out.println(s);
        }
    
    
    
    
        public static String HMACSHA256(String data, String key) throws Exception {
            Mac mac = Mac.getInstance("HmacSHA256");
            mac.init(new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256"));
            byte[] signData = mac.doFinal(data.getBytes("UTF-8"));
            StringBuilder sb = new StringBuilder();
            for (byte item : signData) {
                sb.append(Integer.toHexString((item & 0xFF) | 0x100).substring(1, 3));
            }
            return sb.toString().toUpperCase();
        }
    
    }

算出来的结果跟Delphi ,还有网上的一样

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2_size_16_color_FFFFFF_t_70][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2_size_16_color_FFFFFF_t_70 1][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210319202749995.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210319202806840.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3doNDQ1MzA2,size_16,color_FFFFFF,t_70