消息摘要算法分为三类：
MD(Message Digest)：消息摘要
SHA(Secure Hash Algorithm)：安全散列
MAC(Message Authentication Code)：消息认证码
MAC算法
介绍：
HMAC(keyed-Hash Message Authentication Code)：含有密钥的散列函数算法
包含了MD和SHA两个系列的消息摘要算法
HMAC只是在原有的MD和SHA算法的基础上添加了密钥。
import java.nio.charset.Charset; import javax.crypto.Mac; import javax.crypto.spec.SecretKeySpec; /** * MAC消息摘要组件 * * */ public class MACCoder { public static byte[] HMAC_SHA(byte[] data1,byte[] data2){ final Charset UTF_8 = Charset.forName("UTF-8"); try { String secret = "0X84NSTAokzW1iWCCLFIzP1JYv1utSUT"; Mac sha256_HMAC = Mac.getInstance("HmacSHA256"); SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(UTF_8), "HmacSHA256"); sha256_HMAC.init(secret_key); sha256_HMAC.update(data1); sha256_HMAC.update(data2); return sha256_HMAC.doFinal(); } catch (Exception e){ e.printStackTrace(); } return null; } public static String getHmacSHA256FingerPrint(String str1,String str2) { final Charset UTF_8 = Charset.forName("UTF-8"); try { String secret = "0X84NSTAokzW1iWCCLFIzP1JYv1utSUT"; Mac sha256_HMAC = Mac.getInstance("HmacSHA256"); SecretKeySpec secret_key = new SecretKeySpec(secret.getBytes(UTF_8), "HmacSHA256"); sha256_HMAC.init(secret_key); sha256_HMAC.update(str1.getBytes(UTF_8)); sha256_HMAC.update(str2.getBytes(UTF_8)); byte[] arr= sha256_HMAC.doFinal(); String retval=Base64.encode(arr); return retval; } catch (Exception e){ return null; } } /** * 进行相关的摘要算法的处理展示 * @throws Exception * **/ public static void main(String[] args) throws Exception { /*final Charset UTF_8 = Charset.forName("UTF-8"); byte[] datas1="{ "type": "webhook_event", "id": "3b8800b1-c416-4e65-aaf2-00b16bbadfc1", "created_at": "2019-09-30T02:27:41-07:00", "trigger": "FILE.UPLOADED", "webhook": { "id": "232295281", "type": "webhook" }, "created_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "source": { "id": "532443758714", "type": "file", "file_version": { "type": "file_version", "id": "563691410130", "sha1": "1a9f9f000a2c1fe998510028b9a25da013fde0fd" }, "sequence_id": "0", "etag": "0", "sha1": "1a9f9f000a2c1fe998510028b9a25da013fde0fd", "name": "0301_JP_20190924205001.csv", "description": "", "size": 105, "path_collection": { "total_count": 2, "entries": [ { "type": "folder", "id": "0", "sequence_id": null, "etag": null, "name": "All Files" }, { "type": "folder", "id": "88535556629", "sequence_id": "0", "etag": "0", "name": "T01" } ] }, "created_at": "2019-09-30T02:27:41-07:00", "modified_at": "2019-09-30T02:27:41-07:00", "trashed_at": null, "purged_at": null, "content_created_at": "2019-09-30T00:34:07-07:00", "content_modified_at": "2019-09-30T00:34:07-07:00", "created_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "modified_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "owned_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "shared_link": null, "parent": { "type": "folder", "id": "88613793662", "sequence_id": "0", "etag": "0", "name": "T01" }, "item_status": "active" }, "additional_info": []}".getBytes(UTF_8); byte[] datas2="2019-12-09T02:27:42-07:00".getBytes(UTF_8); byte[] results=MACCoder.HMAC_SHA(datas1,datas2); String str=Base64.encode(results); System.out.println(str);*/ String str1="{ "type": "webhook_event", "id": "3b8800b1-c416-4e65-aaf2-00b16bbadfc1", "created_at": "2019-09-30T02:27:41-07:00", "trigger": "FILE.UPLOADED", "webhook": { "id": "232295281", "type": "webhook" }, "created_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "source": { "id": "532443758714", "type": "file", "file_version": { "type": "file_version", "id": "563691410130", "sha1": "1a9f9f000a2c1fe998510028b9a25da013fde0fd" }, "sequence_id": "0", "etag": "0", "sha1": "1a9f9f000a2c1fe998510028b9a25da013fde0fd", "name": "0301_JP_20190924205001.csv", "description": "", "size": 105, "path_collection": { "total_count": 2, "entries": [ { "type": "folder", "id": "0", "sequence_id": null, "etag": null, "name": "All Files" }, { "type": "folder", "id": "88535556629", "sequence_id": "0", "etag": "0", "name": "T01" } ] }, "created_at": "2019-09-30T02:27:41-07:00", "modified_at": "2019-09-30T02:27:41-07:00", "trashed_at": null, "purged_at": null, "content_created_at": "2019-09-30T00:34:07-07:00", "content_modified_at": "2019-09-30T00:34:07-07:00", "created_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "modified_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "owned_by": { "type": "user", "id": "8571226476", "name": "sv ecld-tms-scom-t01", "login": "sv-ecld-tms-scan-t01@rakuten.com" }, "shared_link": null, "parent": { "type": "folder", "id": "88613793662", "sequence_id": "0", "etag": "0", "name": "T01" }, "item_status": "active" }, "additional_info": []}"; String str2="2019-12-09T02:27:42-07:00"; String str=getHmacSHA256FingerPrint(str1,str2); System.out.println(str); } }
输出:
9Fck1jx9XL0LbKoJrP80qncEWvsuniI94aWRr1Fvi7I=