{"id":785,"date":"2024-12-27T13:05:59","date_gmt":"2024-12-27T05:05:59","guid":{"rendered":"https:\/\/www.ikaros.love\/?p=785"},"modified":"2024-12-30T11:59:19","modified_gmt":"2024-12-30T03:59:19","slug":"%e5%af%b9%e7%a7%b0%e5%8a%a0%e5%af%86%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.ikaros.love\/?p=785","title":{"rendered":"\u5982\u4f55\u5229\u7528\u5bc6\u7801\u52a0\u5bc6\u548c\u89e3\u5bc6"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u5c31\u662f\u4f20\u7edf\u7684\u7528\u4e00\u4e2a\u5bc6\u7801\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u3002\u4f8b\u5982\uff0c\u6211\u4eec\u5e38\u7528\u7684WinZIP\u548cWinRAR\u5bf9\u538b\u7f29\u5305\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\uff0c\u5c31\u662f\u4f7f\u7528\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff1a<\/p>\n\n\n\n

\u4ece\u7a0b\u5e8f\u7684\u89d2\u5ea6\u770b\uff0c\u6240\u8c13\u52a0\u5bc6\uff0c\u5c31\u662f\u8fd9\u6837\u4e00\u4e2a\u51fd\u6570\uff0c\u5b83\u63a5\u6536\u5bc6\u7801\u548c\u660e\u6587\uff0c\u7136\u540e\u8f93\u51fa\u5bc6\u6587\uff1a<\/p>\n\n\n\n

secret = encrypt(key, message);\n<\/code><\/pre>\n\n\n\n
\u800c\u89e3\u5bc6\u5219\u76f8\u53cd\uff0c\u5b83\u63a5\u6536\u5bc6\u7801\u548c\u5bc6\u6587\uff0c\u7136\u540e\u8f93\u51fa\u660e\u6587\uff1a<\/p>\n\n\n\n
plain = decrypt(key, secret);\n<\/code><\/pre>\n\n\n\n
\u5728\u8f6f\u4ef6\u5f00\u53d1\u4e2d\uff0c\u5e38\u7528\u7684\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u6709\uff1a<\/p>\n\n\n\n
\u7b97\u6cd5<\/th>\u5bc6\u94a5\u957f\u5ea6<\/th>\u5de5\u4f5c\u6a21\u5f0f<\/th>\u586b\u5145\u6a21\u5f0f<\/th><\/tr><\/thead>
DES<\/td>56\/64<\/td>ECB\/CBC\/PCBC\/CTR\/…<\/td>NoPadding\/PKCS5Padding\/…<\/td><\/tr>
AES<\/td>128\/192\/256<\/td>ECB\/CBC\/PCBC\/CTR\/…<\/td>NoPadding\/PKCS5Padding\/PKCS7Padding\/…<\/td><\/tr>
IDEA<\/td>128<\/td>ECB<\/td>PKCS5Padding\/PKCS7Padding\/…<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u5bc6\u94a5\u957f\u5ea6\u76f4\u63a5\u51b3\u5b9a\u52a0\u5bc6\u5f3a\u5ea6\uff0c\u800c\u5de5\u4f5c\u6a21\u5f0f\u548c\u586b\u5145\u6a21\u5f0f\u53ef\u4ee5\u770b\u6210\u662f\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u7684\u53c2\u6570\u548c\u683c\u5f0f\u9009\u62e9\u3002Java\u6807\u51c6\u5e93\u63d0\u4f9b\u7684\u7b97\u6cd5\u5b9e\u73b0\u5e76\u4e0d\u5305\u62ec\u6240\u6709\u7684\u5de5\u4f5c\u6a21\u5f0f\u548c\u6240\u6709\u586b\u5145\u6a21\u5f0f\uff0c\u4f46\u662f\u901a\u5e38\u6211\u4eec\u53ea\u9700\u8981\u6311\u9009\u5e38\u7528\u7684\u4f7f\u7528\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n\n\n\n
\u6700\u540e\u6ce8\u610f\uff0cDES\u7b97\u6cd5\u7531\u4e8e\u5bc6\u94a5\u8fc7\u77ed\uff0c\u53ef\u4ee5\u5728\u77ed\u65f6\u95f4\u5185\u88ab\u66b4\u529b\u7834\u89e3\uff0c\u6240\u4ee5\u73b0\u5728\u5df2\u7ecf\u4e0d\u5b89\u5168\u4e86\u3002<\/p>\n\n\n\n
\u4f7f\u7528AES\u52a0\u5bc6<\/h3>\n\n\n\n
AES\u7b97\u6cd5\u662f\u76ee\u524d\u5e94\u7528\u6700\u5e7f\u6cdb\u7684\u52a0\u5bc6\u7b97\u6cd5\u3002\u6211\u4eec\u5148\u7528ECB\u6a21\u5f0f\u52a0\u5bc6\u5e76\u89e3\u5bc6\uff1a<\/p>\n\n\n\n
import java.security.*;\nimport java.util.Base64;\n\nimport javax.crypto.*;\nimport javax.crypto.spec.*;\n\npublic class Main {\n    public static void main(String[] args) throws Exception {\n        \/\/ \u539f\u6587:\n        String message = \"Hello, world!\";\n        System.out.println(\"Message: \" + message);\n        \/\/ 128\u4f4d\u5bc6\u94a5 = 16 bytes Key:\n        byte[] key = \"1234567890abcdef\".getBytes(\"UTF-8\");\n        \/\/ \u52a0\u5bc6:\n        byte[] data = message.getBytes(\"UTF-8\");\n        byte[] encrypted = encrypt(key, data);\n        System.out.println(\"Encrypted: \" + Base64.getEncoder().encodeToString(encrypted));\n        \/\/ \u89e3\u5bc6:\n        byte[] decrypted = decrypt(key, encrypted);\n        System.out.println(\"Decrypted: \" + new String(decrypted, \"UTF-8\"));\n    }\n\n    \/\/ \u52a0\u5bc6:\n    public static byte[] encrypt(byte[] key, byte[] input) throws GeneralSecurityException {\n        Cipher cipher = Cipher.getInstance(\"AES\/ECB\/PKCS5Padding\");\n        SecretKey keySpec = new SecretKeySpec(key, \"AES\");\n        cipher.init(Cipher.ENCRYPT_MODE, keySpec);\n        return cipher.doFinal(input);\n    }\n\n    \/\/ \u89e3\u5bc6:\n    public static byte[] decrypt(byte[] key, byte[] input) throws GeneralSecurityException {\n        Cipher cipher = Cipher.getInstance(\"AES\/ECB\/PKCS5Padding\");\n        SecretKey keySpec = new SecretKeySpec(key, \"AES\");\n        cipher.init(Cipher.DECRYPT_MODE, keySpec);\n        return cipher.doFinal(input);\n    }\n}\n<\/code><\/pre>\n\n\n\n
Java\u6807\u51c6\u5e93\u63d0\u4f9b\u7684\u5bf9\u79f0\u52a0\u5bc6\u63a5\u53e3\u975e\u5e38\u7b80\u5355\uff0c\u4f7f\u7528\u65f6\u6309\u4ee5\u4e0b\u6b65\u9aa4\u7f16\u5199\u4ee3\u7801\uff1a<\/p>\n\n\n\n
    \n
  1. \u6839\u636e\u7b97\u6cd5\u540d\u79f0\/\u5de5\u4f5c\u6a21\u5f0f\/\u586b\u5145\u6a21\u5f0f\u83b7\u53d6Cipher\u5b9e\u4f8b\uff1b<\/li>\n\n\n\n
  2. \u6839\u636e\u7b97\u6cd5\u540d\u79f0\u521d\u59cb\u5316\u4e00\u4e2aSecretKey\u5b9e\u4f8b\uff0c\u5bc6\u94a5\u5fc5\u987b\u662f\u6307\u5b9a\u957f\u5ea6\uff1b<\/li>\n\n\n\n
  3. \u4f7f\u7528SecretKey\u521d\u59cb\u5316Cipher\u5b9e\u4f8b\uff0c\u5e76\u8bbe\u7f6e\u52a0\u5bc6\u6216\u89e3\u5bc6\u6a21\u5f0f\uff1b<\/li>\n\n\n\n
  4. \u4f20\u5165\u660e\u6587\u6216\u5bc6\u6587\uff0c\u83b7\u5f97\u5bc6\u6587\u6216\u660e\u6587\u3002<\/li>\n<\/ol>\n\n\n\n
    ECB\u6a21\u5f0f\u662f\u6700\u7b80\u5355\u7684AES\u52a0\u5bc6\u6a21\u5f0f\uff0c\u5b83\u53ea\u9700\u8981\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\u7684\u5bc6\u94a5\uff0c\u56fa\u5b9a\u7684\u660e\u6587\u4f1a\u751f\u6210\u56fa\u5b9a\u7684\u5bc6\u6587\uff0c\u8fd9\u79cd\u4e00\u5bf9\u4e00\u7684\u52a0\u5bc6\u65b9\u5f0f\u4f1a\u5bfc\u81f4\u5b89\u5168\u6027\u964d\u4f4e\uff0c\u66f4\u597d\u7684\u65b9\u5f0f\u662f\u901a\u8fc7CBC\u6a21\u5f0f\uff0c\u5b83\u9700\u8981\u4e00\u4e2a\u968f\u673a\u6570\u4f5c\u4e3aIV\u53c2\u6570\uff0c\u8fd9\u6837\u5bf9\u4e8e\u540c\u4e00\u4efd\u660e\u6587\uff0c\u6bcf\u6b21\u751f\u6210\u7684\u5bc6\u6587\u90fd\u4e0d\u540c\uff1a<\/p>\n\n\n\n
    import java.security.*;\nimport java.util.Base64;\nimport javax.crypto.*;\nimport javax.crypto.spec.*;\n\npublic class Main {\n    public static void main(String[] args) throws Exception {\n        \/\/ \u539f\u6587:\n        String message = \"Hello, world!\";\n        System.out.println(\"Message: \" + message);\n        \/\/ 256\u4f4d\u5bc6\u94a5 = 32 bytes Key:\n        byte[] key = \"1234567890abcdef1234567890abcdef\".getBytes(\"UTF-8\");\n        \/\/ \u52a0\u5bc6:\n        byte[] data = message.getBytes(\"UTF-8\");\n        byte[] encrypted = encrypt(key, data);\n        System.out.println(\"Encrypted: \" + Base64.getEncoder().encodeToString(encrypted));\n        \/\/ \u89e3\u5bc6:\n        byte[] decrypted = decrypt(key, encrypted);\n        System.out.println(\"Decrypted: \" + new String(decrypted, \"UTF-8\"));\n    }\n\n    \/\/ \u52a0\u5bc6:\n    public static byte[] encrypt(byte[] key, byte[] input) throws GeneralSecurityException {\n        Cipher cipher = Cipher.getInstance(\"AES\/CBC\/PKCS5Padding\");\n        SecretKeySpec keySpec = new SecretKeySpec(key, \"AES\");\n        \/\/ CBC\u6a21\u5f0f\u9700\u8981\u751f\u6210\u4e00\u4e2a16 bytes\u7684initialization vector:\n        SecureRandom sr = SecureRandom.getInstanceStrong();\n        byte[] iv = sr.generateSeed(16);\n        IvParameterSpec ivps = new IvParameterSpec(iv);\n        cipher.init(Cipher.ENCRYPT_MODE, keySpec, ivps);\n        byte[] data = cipher.doFinal(input);\n        \/\/ IV\u4e0d\u9700\u8981\u4fdd\u5bc6\uff0c\u628aIV\u548c\u5bc6\u6587\u4e00\u8d77\u8fd4\u56de:\n        return join(iv, data);\n    }\n\n    \/\/ \u89e3\u5bc6:\n    public static byte[] decrypt(byte[] key, byte[] input) throws GeneralSecurityException {\n        \/\/ \u628ainput\u5206\u5272\u6210IV\u548c\u5bc6\u6587:\n        byte[] iv = new byte[16];\n        byte[] data = new byte[input.length - 16];\n        System.arraycopy(input, 0, iv, 0, 16);\n        System.arraycopy(input, 16, data, 0, data.length);\n        \/\/ \u89e3\u5bc6:\n        Cipher cipher = Cipher.getInstance(\"AES\/CBC\/PKCS5Padding\");\n        SecretKeySpec keySpec = new SecretKeySpec(key, \"AES\");\n        IvParameterSpec ivps = new IvParameterSpec(iv);\n        cipher.init(Cipher.DECRYPT_MODE, keySpec, ivps);\n        return cipher.doFinal(data);\n    }\n\n    public static byte[] join(byte[] bs1, byte[] bs2) {\n        byte[] r = new byte[bs1.length + bs2.length];\n        System.arraycopy(bs1, 0, r, 0, bs1.length);\n        System.arraycopy(bs2, 0, r, bs1.length, bs2.length);\n        return r;\n    }\n}\n<\/code><\/pre>\n\n\n\n
    \u5728CBC\u6a21\u5f0f\u4e0b\uff0c\u9700\u8981\u4e00\u4e2a\u968f\u673a\u751f\u6210\u768416\u5b57\u8282IV\u53c2\u6570\uff0c\u5fc5\u987b\u4f7f\u7528SecureRandom<\/code>\u751f\u6210\u3002\u56e0\u4e3a\u591a\u4e86\u4e00\u4e2aIvParameterSpec<\/code>\u5b9e\u4f8b\uff0c\u56e0\u6b64\uff0c\u521d\u59cb\u5316\u65b9\u6cd5\u9700\u8981\u8c03\u7528Cipher<\/code>\u7684\u4e00\u4e2a\u91cd\u8f7d\u65b9\u6cd5\u5e76\u4f20\u5165IvParameterSpec<\/code>\u3002<\/p>\n\n\n\n
    \u89c2\u5bdf\u8f93\u51fa\uff0c\u53ef\u4ee5\u53d1\u73b0\u6bcf\u6b21\u751f\u6210\u7684IV\u4e0d\u540c\uff0c\u5bc6\u6587\u4e5f\u4e0d\u540c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u5c31\u662f\u4f20\u7edf\u7684\u7528\u4e00\u4e2a\u5bc6\u7801...<\/p>\n","protected":false},"author":1,"featured_media":786,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[203,202,204,201],"_links":{"self":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/785"}],"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=785"}],"version-history":[{"count":3,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/785\/revisions"}],"predecessor-version":[{"id":798,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/posts\/785\/revisions\/798"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=\/wp\/v2\/media\/786"}],"wp:attachment":[{"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=785"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=785"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ikaros.love\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=785"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}