{"id":782,"date":"2024-12-27T13:02:29","date_gmt":"2024-12-27T05:02:29","guid":{"rendered":"https:\/\/www.ikaros.love\/?p=782"},"modified":"2024-12-27T13:02:29","modified_gmt":"2024-12-27T05:02:29","slug":"%e5%a6%82%e4%bd%95%e5%af%b9%e6%91%98%e8%a6%81%e7%ae%97%e6%b3%95%e8%bf%9b%e8%a1%8c%e5%8a%a0%e5%af%86","status":"publish","type":"post","link":"https:\/\/www.ikaros.love\/?p=782","title":{"rendered":"\u5982\u4f55\u5bf9\u6458\u8981\u7b97\u6cd5\u8fdb\u884c\u52a0\u5bc6"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u5728\u524d\u9762\u8bb2\u5230\u54c8\u5e0c\u7b97\u6cd5\u65f6\uff0c\u6211\u4eec\u8bf4\uff0c\u5b58\u50a8\u7528\u6237\u7684\u54c8\u5e0c\u53e3\u4ee4\u65f6\uff0c\u8981\u52a0\u76d0\u5b58\u50a8\uff0c\u76ee\u7684\u5c31\u5728\u4e8e\u62b5\u5fa1\u5f69\u8679\u8868\u653b\u51fb\u3002<\/p>\n\n\n\n

\u6211\u4eec\u56de\u987e\u4e00\u4e0b\u54c8\u5e0c\u7b97\u6cd5\uff1a<\/p>\n\n\n\n

digest = hash(input)\n<\/code><\/pre>\n\n\n\n
\u6b63\u662f\u56e0\u4e3a\u76f8\u540c\u7684\u8f93\u5165\u4f1a\u4ea7\u751f\u76f8\u540c\u7684\u8f93\u51fa\uff0c\u6211\u4eec\u52a0\u76d0\u7684\u76ee\u7684\u5c31\u5728\u4e8e\uff0c\u4f7f\u5f97\u8f93\u5165\u6709\u6240\u53d8\u5316\uff1a<\/p>\n\n\n\n
digest = hash(salt + input)\n<\/code><\/pre>\n\n\n\n
\u8fd9\u4e2asalt\u53ef\u4ee5\u770b\u4f5c\u662f\u4e00\u4e2a\u989d\u5916\u7684\u201c\u8ba4\u8bc1\u7801\u201d\uff0c\u540c\u6837\u7684\u8f93\u5165\uff0c\u4e0d\u540c\u7684\u8ba4\u8bc1\u7801\uff0c\u4f1a\u4ea7\u751f\u4e0d\u540c\u7684\u8f93\u51fa\u3002\u56e0\u6b64\uff0c\u8981\u9a8c\u8bc1\u8f93\u51fa\u7684\u54c8\u5e0c\uff0c\u5fc5\u987b\u540c\u65f6\u63d0\u4f9b\u201c\u8ba4\u8bc1\u7801\u201d\u3002<\/p>\n\n\n\n
Hmac\u7b97\u6cd5\u5c31\u662f\u4e00\u79cd\u57fa\u4e8e\u5bc6\u94a5\u7684\u6d88\u606f\u8ba4\u8bc1\u7801\u7b97\u6cd5\uff0c\u5b83\u7684\u5168\u79f0\u662fHash-based Message Authentication Code\uff0c\u662f\u4e00\u79cd\u66f4\u5b89\u5168\u7684\u6d88\u606f\u6458\u8981\u7b97\u6cd5\u3002<\/p>\n\n\n\n
Hmac\u7b97\u6cd5\u603b\u662f\u548c\u67d0\u79cd\u54c8\u5e0c\u7b97\u6cd5\u914d\u5408\u8d77\u6765\u7528\u7684\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u4f7f\u7528MD5\u7b97\u6cd5\uff0c\u5bf9\u5e94\u7684\u5c31\u662fHmacMD5\u7b97\u6cd5\uff0c\u5b83\u76f8\u5f53\u4e8e\u201c\u52a0\u76d0\u201d\u7684MD5\uff1a<\/p>\n\n\n\n
HmacMD5 \u2248 md5(secure_random_key, input)\n<\/code><\/pre>\n\n\n\n
\u56e0\u6b64\uff0cHmacMD5\u53ef\u4ee5\u770b\u4f5c\u5e26\u6709\u4e00\u4e2a\u5b89\u5168\u7684key\u7684MD5\u3002\u4f7f\u7528HmacMD5\u800c\u4e0d\u662f\u7528MD5\u52a0salt\uff0c\u6709\u5982\u4e0b\u597d\u5904\uff1a<\/p>\n\n\n\n
    \n
  • HmacMD5\u4f7f\u7528\u7684key\u957f\u5ea6\u662f64\u5b57\u8282\uff0c\u66f4\u5b89\u5168\uff1b<\/li>\n\n\n\n
  • Hmac\u662f\u6807\u51c6\u7b97\u6cd5\uff0c\u540c\u6837\u9002\u7528\u4e8eSHA-1\u7b49\u5176\u4ed6\u54c8\u5e0c\u7b97\u6cd5\uff1b<\/li>\n\n\n\n
  • Hmac\u8f93\u51fa\u548c\u539f\u6709\u7684\u54c8\u5e0c\u7b97\u6cd5\u957f\u5ea6\u4e00\u81f4\u3002<\/li>\n<\/ul>\n\n\n\n
    \u53ef\u89c1\uff0cHmac\u672c\u8d28\u4e0a\u5c31\u662f\u628akey\u6df7\u5165\u6458\u8981\u7684\u7b97\u6cd5\u3002\u9a8c\u8bc1\u6b64\u54c8\u5e0c\u65f6\uff0c\u9664\u4e86\u539f\u59cb\u7684\u8f93\u5165\u6570\u636e\uff0c\u8fd8\u8981\u63d0\u4f9bkey\u3002<\/p>\n\n\n\n
    \u4e3a\u4e86\u4fdd\u8bc1\u5b89\u5168\uff0c\u6211\u4eec\u4e0d\u4f1a\u81ea\u5df1\u6307\u5b9akey\uff0c\u800c\u662f\u901a\u8fc7Java\u6807\u51c6\u5e93\u7684KeyGenerator\u751f\u6210\u4e00\u4e2a\u5b89\u5168\u7684\u968f\u673a\u7684key\u3002\u4e0b\u9762\u662f\u4f7f\u7528HmacMD5\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n
    import javax.crypto.*;\nimport java.util.HexFormat;\n\npublic class Main {\n    public static void main(String[] args) throws Exception {\n        KeyGenerator keyGen = KeyGenerator.getInstance(\"HmacMD5\");\n        SecretKey key = keyGen.generateKey();\n        \/\/ \u6253\u5370\u968f\u673a\u751f\u6210\u7684key:\n        byte[] skey = key.getEncoded();\n        System.out.println(HexFormat.of().formatHex(skey));\n        Mac mac = Mac.getInstance(\"HmacMD5\");\n        mac.init(key);\n        mac.update(\"HelloWorld\".getBytes(\"UTF-8\"));\n        byte[] result = mac.doFinal();\n        System.out.println(HexFormat.of().formatHex(result));\n    }\n}\n<\/code><\/pre>\n\n\n\n
    \u548cMD5\u76f8\u6bd4\uff0c\u4f7f\u7528HmacMD5\u7684\u6b65\u9aa4\u662f\uff1a<\/p>\n\n\n\n
      \n
    1. \u901a\u8fc7\u540d\u79f0HmacMD5<\/code>\u83b7\u53d6KeyGenerator<\/code>\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
    2. \u901a\u8fc7KeyGenerator<\/code>\u521b\u5efa\u4e00\u4e2aSecretKey<\/code>\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
    3. \u901a\u8fc7\u540d\u79f0HmacMD5<\/code>\u83b7\u53d6Mac<\/code>\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
    4. \u7528SecretKey<\/code>\u521d\u59cb\u5316Mac<\/code>\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
    5. \u5bf9Mac<\/code>\u5b9e\u4f8b\u53cd\u590d\u8c03\u7528update(byte[])<\/code>\u8f93\u5165\u6570\u636e\uff1b<\/li>\n\n\n\n
    6. \u8c03\u7528Mac<\/code>\u5b9e\u4f8b\u7684doFinal()<\/code>\u83b7\u53d6\u6700\u7ec8\u7684\u54c8\u5e0c\u503c\u3002<\/li>\n<\/ol>\n\n\n\n
      \u6211\u4eec\u53ef\u4ee5\u7528Hmac\u7b97\u6cd5\u53d6\u4ee3\u539f\u6709\u7684\u81ea\u5b9a\u4e49\u7684\u52a0\u76d0\u7b97\u6cd5\uff0c\u56e0\u6b64\uff0c\u5b58\u50a8\u7528\u6237\u540d\u548c\u53e3\u4ee4\u7684\u6570\u636e\u5e93\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n
      username<\/th>secret_key (64 bytes)<\/th>password<\/th><\/tr><\/thead>
      bob<\/td>a8c06e05f92e…5e16<\/td>7e0387872a57c85ef6dddbaa12f376de<\/td><\/tr>
      alice<\/td>e6a343693985…f4be<\/td>c1f929ac2552642b302e739bc0cdbaac<\/td><\/tr>
      tim<\/td>f27a973dfdc0…6003<\/td>af57651c3a8a73303515804d4af43790<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
      \u6709\u4e86Hmac\u8ba1\u7b97\u7684\u54c8\u5e0c\u548cSecretKey<\/code>\uff0c\u6211\u4eec\u60f3\u8981\u9a8c\u8bc1\u600e\u4e48\u529e\uff1f\u8fd9\u65f6\uff0cSecretKey<\/code>\u4e0d\u80fd\u4eceKeyGenerator<\/code>\u751f\u6210\uff0c\u800c\u662f\u4ece\u4e00\u4e2abyte[]<\/code>\u6570\u7ec4\u6062\u590d\uff1a<\/p>\n\n\n\n
      import javax.crypto.*;\nimport javax.crypto.spec.*;\nimport java.util.HexFormat;\n\npublic class Main {\n    public static void main(String[] args) throws Exception {\n        byte[] hkey = HexFormat.of().parseHex(\n                \"b648ee779d658c420420d86291ec70f5\" + \n                \"cf97521c740330972697a8fad0b55f5c\" + \n                \"5a7924e4afa99d8c5883e07d7c3f9ed0\" + \n                \"76aa544d25ed2f5ceea59dcc122babc8\");\n        SecretKey key = new SecretKeySpec(hkey, \"HmacMD5\");\n        Mac mac = Mac.getInstance(\"HmacMD5\");\n        mac.init(key);\n        mac.update(\"HelloWorld\".getBytes(\"UTF-8\"));\n        byte[] result = mac.doFinal();\n        System.out.println(HexFormat.of().formatHex(result)); \/\/ 4af40be7864efaae1473a4c601b650ae\n    }\n}\n<\/code><\/pre>\n\n\n\n
      \u6062\u590dSecretKey<\/code>\u7684\u8bed\u53e5\u5c31\u662fnew SecretKeySpec(hkey, \"HmacMD5\")<\/code>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5728\u524d\u9762\u8bb2\u5230\u54c8\u5e0c\u7b97\u6cd5\u65f6\uff0c\u6211\u4eec\u8bf4\uff0c\u5b58...<\/p>\n","protected":false},"author":1,"featured_media":783,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[200,116,199,195],"_links":{"self":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/782"}],"collection":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=782"}],"version-history":[{"count":1,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":784,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions\/784"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/media\/783"}],"wp:attachment":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}