{"id":801,"date":"2024-12-30T12:36:27","date_gmt":"2024-12-30T04:36:27","guid":{"rendered":"https:\/\/www.ikaros.love\/?p=801"},"modified":"2024-12-30T15:35:46","modified_gmt":"2024-12-30T07:35:46","slug":"%e5%a6%82%e4%bd%95%e5%af%b9%e6%96%87%e4%bb%b6%e8%bf%9b%e8%a1%8c%e7%ad%be%e5%90%8d","status":"publish","type":"post","link":"https:\/\/www.ikaros.love\/?p=801","title":{"rendered":"\u5982\u4f55\u5bf9\u6587\u4ef6\u8fdb\u884c\u7b7e\u540d"},"content":{"rendered":"\n
\"\"<\/figure>\n\n\n\n

\u6211\u4eec\u4f7f\u7528\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u7684\u65f6\u5019\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u516c\u94a5-\u79c1\u94a5\u5bf9\uff0c\u901a\u5e38\u662f\u7528\u516c\u94a5\u52a0\u5bc6\uff0c\u79c1\u94a5\u89e3\u5bc6\u3002<\/p>\n\n\n\n

\u5982\u679c\u4f7f\u7528\u79c1\u94a5\u52a0\u5bc6\uff0c\u516c\u94a5\u89e3\u5bc6\u662f\u5426\u53ef\u884c\u5462\uff1f\u5b9e\u9645\u4e0a\u662f\u5b8c\u5168\u53ef\u884c\u7684\u3002<\/p>\n\n\n\n

\u4e0d\u8fc7\u6211\u4eec\u518d\u4ed4\u7ec6\u60f3\u4e00\u60f3\uff0c\u79c1\u94a5\u662f\u4fdd\u5bc6\u7684\uff0c\u800c\u516c\u94a5\u662f\u516c\u5f00\u7684\uff0c\u7528\u79c1\u94a5\u52a0\u5bc6\uff0c\u90a3\u76f8\u5f53\u4e8e\u6240\u6709\u4eba\u90fd\u53ef\u4ee5\u7528\u516c\u94a5\u89e3\u5bc6\u3002\u8fd9\u4e2a\u52a0\u5bc6\u6709\u4ec0\u4e48\u610f\u4e49\uff1f<\/p>\n\n\n\n

\u8fd9\u4e2a\u52a0\u5bc6\u7684\u610f\u4e49\u5728\u4e8e\uff0c\u5982\u679c\u5c0f\u660e\u7528\u81ea\u5df1\u7684\u79c1\u94a5\u52a0\u5bc6\u4e86\u4e00\u6761\u6d88\u606f\uff0c\u6bd4\u5982\u5c0f\u660e\u559c\u6b22\u5c0f\u7ea2<\/code>\uff0c\u7136\u540e\u4ed6\u516c\u5f00\u4e86\u52a0\u5bc6\u6d88\u606f\uff0c\u7531\u4e8e\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u7528\u5c0f\u660e\u7684\u516c\u94a5\u89e3\u5bc6\uff0c\u4ece\u800c\u4f7f\u5f97\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u786e\u8ba4\u5c0f\u660e\u559c\u6b22\u5c0f\u7ea2<\/code>\u8fd9\u6761\u6d88\u606f\u80af\u5b9a\u662f\u5c0f\u660e\u53d1\u51fa\u7684\uff0c\u5176\u4ed6\u4eba\u4e0d\u80fd\u4f2a\u9020\u8fd9\u4e2a\u6d88\u606f\uff0c\u5c0f\u660e\u4e5f\u4e0d\u80fd\u62b5\u8d56\u8fd9\u6761\u6d88\u606f\u4e0d\u662f\u81ea\u5df1\u5199\u7684\u3002<\/p>\n\n\n\n

\u56e0\u6b64\uff0c\u79c1\u94a5\u52a0\u5bc6\u5f97\u5230\u7684\u5bc6\u6587\u5b9e\u9645\u4e0a\u5c31\u662f\u6570\u5b57\u7b7e\u540d\uff0c\u8981\u9a8c\u8bc1\u8fd9\u4e2a\u7b7e\u540d\u662f\u5426\u6b63\u786e\uff0c\u53ea\u80fd\u7528\u79c1\u94a5\u6301\u6709\u8005\u7684\u516c\u94a5\u8fdb\u884c\u89e3\u5bc6\u9a8c\u8bc1\u3002\u4f7f\u7528\u6570\u5b57\u7b7e\u540d\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u786e\u8ba4\u67d0\u4e2a\u4fe1\u606f\u786e\u5b9e\u662f\u7531\u67d0\u4e2a\u53d1\u9001\u65b9\u53d1\u9001\u7684\uff0c\u4efb\u4f55\u4eba\u90fd\u4e0d\u53ef\u80fd\u4f2a\u9020\u6d88\u606f\uff0c\u5e76\u4e14\uff0c\u53d1\u9001\u65b9\u4e5f\u4e0d\u80fd\u62b5\u8d56\u3002<\/p>\n\n\n\n

\u5728\u5b9e\u9645\u5e94\u7528\u7684\u65f6\u5019\uff0c\u7b7e\u540d\u5b9e\u9645\u4e0a\u5e76\u4e0d\u662f\u9488\u5bf9\u539f\u59cb\u6d88\u606f\uff0c\u800c\u662f\u9488\u5bf9\u539f\u59cb\u6d88\u606f\u7684\u54c8\u5e0c\u8fdb\u884c\u7b7e\u540d\uff0c\u5373\uff1a<\/p>\n\n\n\n

signature = encrypt(privateKey, sha256(message))\n<\/code><\/pre>\n\n\n\n
\u5bf9\u7b7e\u540d\u8fdb\u884c\u9a8c\u8bc1\u5b9e\u9645\u4e0a\u5c31\u662f\u7528\u516c\u94a5\u89e3\u5bc6\uff1a<\/p>\n\n\n\n
hash = decrypt(publicKey, signature)\n<\/code><\/pre>\n\n\n\n
\u7136\u540e\u628a\u89e3\u5bc6\u540e\u7684\u54c8\u5e0c\u4e0e\u539f\u59cb\u6d88\u606f\u7684\u54c8\u5e0c\u8fdb\u884c\u5bf9\u6bd4\u3002<\/p>\n\n\n\n
\u56e0\u4e3a\u7528\u6237\u603b\u662f\u4f7f\u7528\u81ea\u5df1\u7684\u79c1\u94a5\u8fdb\u884c\u7b7e\u540d\uff0c\u6240\u4ee5\uff0c\u79c1\u94a5\u5c31\u76f8\u5f53\u4e8e\u7528\u6237\u8eab\u4efd\u3002\u800c\u516c\u94a5\u7528\u6765\u7ed9\u5916\u90e8\u9a8c\u8bc1\u7528\u6237\u8eab\u4efd\u3002<\/p>\n\n\n\n
\u5e38\u7528\u6570\u5b57\u7b7e\u540d\u7b97\u6cd5\u6709\uff1a<\/p>\n\n\n\n
    \n
  • MD5withRSA<\/li>\n\n\n\n
  • SHA1withRSA<\/li>\n\n\n\n
  • SHA256withRSA<\/li>\n<\/ul>\n\n\n\n
    \u5b83\u4eec\u5b9e\u9645\u4e0a\u5c31\u662f\u6307\u5b9a\u67d0\u79cd\u54c8\u5e0c\u7b97\u6cd5\u8fdb\u884cRSA\u7b7e\u540d\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n
    import java.nio.charset.StandardCharsets;\nimport java.security.*;\nimport java.util.HexFormat;\n\npublic class Main {\n    public static void main(String[] args) throws GeneralSecurityException {\n        \/\/ \u751f\u6210RSA\u516c\u94a5\/\u79c1\u94a5:\n        KeyPairGenerator kpGen = KeyPairGenerator.getInstance(\"RSA\");\n        kpGen.initialize(1024);\n        KeyPair kp = kpGen.generateKeyPair();\n        PrivateKey sk = kp.getPrivate();\n        PublicKey pk = kp.getPublic();\n\n        \/\/ \u5f85\u7b7e\u540d\u7684\u6d88\u606f:\n        byte[] message = \"Hello, I am Bob!\".getBytes(StandardCharsets.UTF_8);\n\n        \/\/ \u7528\u79c1\u94a5\u7b7e\u540d:\n        Signature s = Signature.getInstance(\"SHA1withRSA\");\n        s.initSign(sk);\n        s.update(message);\n        byte[] signed = s.sign();\n        System.out.println(\"signature: \" + HexFormat.of().formatHex(signed));\n\n        \/\/ \u7528\u516c\u94a5\u9a8c\u8bc1:\n        Signature v = Signature.getInstance(\"SHA1withRSA\");\n        v.initVerify(pk);\n        v.update(message);\n        boolean valid = v.verify(signed);\n        System.out.println(\"valid? \" + valid);\n    }\n}\n<\/code><\/pre>\n\n\n\n
    \u4f7f\u7528\u5176\u4ed6\u516c\u94a5\uff0c\u6216\u8005\u9a8c\u8bc1\u7b7e\u540d\u7684\u65f6\u5019\u4fee\u6539\u539f\u59cb\u4fe1\u606f\uff0c\u90fd\u65e0\u6cd5\u9a8c\u8bc1\u6210\u529f\u3002<\/p>\n\n\n\n
    DSA\u7b7e\u540d<\/h3>\n\n\n\n
    \u9664\u4e86RSA\u53ef\u4ee5\u7b7e\u540d\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528DSA\u7b97\u6cd5\u8fdb\u884c\u7b7e\u540d\u3002DSA\u662fDigital Signature Algorithm\u7684\u7f29\u5199\uff0c\u5b83\u4f7f\u7528ElGamal\u6570\u5b57\u7b7e\u540d\u7b97\u6cd5\u3002<\/p>\n\n\n\n
    DSA\u53ea\u80fd\u914d\u5408SHA\u4f7f\u7528\uff0c\u5e38\u7528\u7684\u7b97\u6cd5\u6709\uff1a<\/p>\n\n\n\n
      \n
    • SHA1withDSA<\/li>\n\n\n\n
    • SHA256withDSA<\/li>\n\n\n\n
    • SHA512withDSA<\/li>\n<\/ul>\n\n\n\n
      \u548cRSA\u6570\u5b57\u7b7e\u540d\u76f8\u6bd4\uff0cDSA\u7684\u4f18\u70b9\u662f\u66f4\u5feb\u3002<\/p>\n\n\n\n
      \u5728Java\u4e2d\u5b9e\u73b0DSA\uff08Digital Signature Algorithm\uff09\u7b7e\u540d\u548c\u9a8c\u8bc1\uff0c\u53ef\u4ee5\u4f7f\u7528java.security<\/code>\u5305\u4e2d\u7684\u7c7b\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u751f\u6210DSA\u5bc6\u94a5\u5bf9\u3001\u4f7f\u7528\u79c1\u94a5\u8fdb\u884c\u7b7e\u540d\u4ee5\u53ca\u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/p>\n\n\n\n
      import java.security.*;\nimport java.util.Base64;\n\npublic class DSASignatureExample {\n\n    public static void main(String[] args) throws NoSuchAlgorithmException, InvalidKeyException, SignatureException {\n        \/\/ 1. \u751f\u6210DSA\u5bc6\u94a5\u5bf9\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"DSA\");\n        keyGen.initialize(2048); \/\/ \u53ef\u4ee5\u6307\u5b9a\u5bc6\u94a5\u957f\u5ea6\uff0c\u4f8b\u59822048\u4f4d\n        KeyPair pair = keyGen.generateKeyPair();\n        PrivateKey privateKey = pair.getPrivate();\n        PublicKey publicKey = pair.getPublic();\n\n        \/\/ 2. \u8981\u7b7e\u540d\u7684\u6570\u636e\n        String dataToSign = \"Hello, DSA!\";\n        byte[] dataBytes = dataToSign.getBytes();\n\n        \/\/ 3. \u4f7f\u7528\u79c1\u94a5\u521b\u5efa\u5e76\u521d\u59cb\u5316Signature\u5bf9\u8c61\n        Signature signature = Signature.getInstance(\"SHA256withDSA\");\n        signature.initSign(privateKey);\n\n        \/\/ 4. \u66f4\u65b0\u8981\u7b7e\u540d\u7684\u6570\u636e\n        signature.update(dataBytes);\n\n        \/\/ 5. \u751f\u6210\u7b7e\u540d\n        byte[] signedData = signature.sign();\n        System.out.println(\"Signed Data: \" + Base64.getEncoder().encodeToString(signedData));\n\n        \/\/ 6. \u9a8c\u8bc1\u7b7e\u540d\uff1a\u91cd\u65b0\u521d\u59cb\u5316Signature\u5bf9\u8c61\u4ee5\u9a8c\u8bc1\u6a21\u5f0f\uff0c\u5e76\u66f4\u65b0\u6570\u636e\n        signature.initVerify(publicKey);\n        signature.update(dataBytes);\n\n        \/\/ 7. \u9a8c\u8bc1\u7b7e\u540d\u662f\u5426\u6b63\u786e\n        boolean isVerified = signature.verify(signedData);\n        System.out.println(\"Signature Verified: \" + isVerified);\n    }\n}<\/code><\/pre>\n\n\n\n
      \u4e0a\u8ff0\u4ee3\u7801\u9996\u5148\u751f\u6210\u4e86\u4e00\u5bf9DSA\u5bc6\u94a5\uff0c\u7136\u540e\u5b9a\u4e49\u4e86\u4e00\u6bb5\u5b57\u7b26\u4e32\u4f5c\u4e3a\u9700\u8981\u7b7e\u540d\u7684\u6570\u636e\u3002\u63a5\u7740\uff0c\u901a\u8fc7Signature<\/code>\u7c7b\u7684\u5b9e\u4f8b\u6765\u6267\u884c\u7b7e\u540d\u64cd\u4f5c\uff0c\u5e76\u6253\u5370\u51faBase64\u7f16\u7801\u540e\u7684\u7b7e\u540d\u7ed3\u679c\u3002\u6700\u540e\uff0c\u518d\u6b21\u4f7f\u7528\u76f8\u540c\u7684\u7b7e\u540d\u7b97\u6cd5\u548c\u516c\u94a5\u6765\u9a8c\u8bc1\u7b7e\u540d\u7684\u6709\u6548\u6027\u3002<\/p>\n\n\n\n
      \u8bf7\u6ce8\u610f\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u5e94\u59a5\u5584\u4fdd\u7ba1\u597d\u79c1\u94a5\uff0c\u5e76\u786e\u4fdd\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u4fdd\u62a4\u597d\u7b7e\u540d\u6570\u636e\uff0c\u9632\u6b62\u7be1\u6539\u3002\u540c\u65f6\uff0c\u4e3a\u4e86\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u5efa\u8bae\u4f7f\u7528\u66f4\u5f3a\u7684\u54c8\u5e0c\u51fd\u6570\u5982SHA-256\u4e0eDSA\u7ed3\u5408\u4f7f\u7528\uff08\u5373”SHA256withDSA”\uff09\u3002<\/p>\n\n\n\n
      ECDSA\u7b7e\u540d<\/h3>\n\n\n\n
      \u692d\u5706\u66f2\u7ebf\u7b7e\u540d\u7b97\u6cd5ECDSA\uff1aElliptic Curve Digital Signature Algorithm\u4e5f\u662f\u4e00\u79cd\u5e38\u7528\u7684\u7b7e\u540d\u7b97\u6cd5\uff0c\u5b83\u7684\u7279\u70b9\u662f\u53ef\u4ee5\u4ece\u79c1\u94a5\u63a8\u51fa\u516c\u94a5\u3002\u6bd4\u7279\u5e01\u7684\u7b7e\u540d\u7b97\u6cd5\u5c31\u91c7\u7528\u4e86ECDSA\u7b97\u6cd5\uff0c\u4f7f\u7528\u6807\u51c6\u692d\u5706\u66f2\u7ebfsecp256k1\u3002BouncyCastle\u63d0\u4f9b\u4e86ECDSA\u7684\u5b8c\u6574\u5b9e\u73b0\u3002<\/p>\n\n\n\n
      ECDSA\uff08Elliptic Curve Digital Signature Algorithm\uff09\u662f\u4e00\u79cd\u57fa\u4e8e\u692d\u5706\u66f2\u7ebf\u6570\u5b66\u7684\u6570\u5b57\u7b7e\u540d\u7b97\u6cd5\u3002\u5728Java\u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528java.security<\/code>\u5305\u4e2d\u7684\u7c7b\u6765\u5b9e\u73b0ECDSA\u7b7e\u540d\u548c\u9a8c\u8bc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u751f\u6210\u5bc6\u94a5\u5bf9\u3001\u521b\u5efa\u7b7e\u540d\u4ee5\u53ca\u9a8c\u8bc1\u7b7e\u540d\u3002<\/p>\n\n\n\n
      1. \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9<\/h3>\n\n\n\n
      import java.security.KeyPair;\nimport java.security.KeyPairGenerator;\nimport java.security.NoSuchAlgorithmException;\nimport java.security.PrivateKey;\nimport java.security.PublicKey;\n\npublic class ECDSAGenerateKeys {\n    public static void main(String[] args) throws NoSuchAlgorithmException {\n        \/\/ \u521b\u5efa\u4e00\u4e2aKeyPairGenerator\u5b9e\u4f8b\uff0c\u5e76\u6307\u5b9a\u7b97\u6cd5\u4e3aEC\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\");\n\n        \/\/ \u6307\u5b9a\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\uff0c\u4f8b\u5982secp256r1\n        keyGen.initialize(256);\n\n        \/\/ \u751f\u6210\u5bc6\u94a5\u5bf9\n        KeyPair keyPair = keyGen.generateKeyPair();\n\n        PrivateKey privateKey = keyPair.getPrivate();\n        PublicKey publicKey = keyPair.getPublic();\n\n        System.out.println(\"Private Key: \" + privateKey.toString());\n        System.out.println(\"Public Key: \" + publicKey.toString());\n    }\n}<\/code><\/pre>\n\n\n\n
      2. \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d<\/h3>\n\n\n\n
      import java.security.*;\nimport java.util.Base64;\n\npublic class ECDSASignatureExample {\n    public static byte[] signData(byte[] data, PrivateKey privateKey) throws Exception {\n        \/\/ \u83b7\u53d6Signature\u5b9e\u4f8b\u5e76\u521d\u59cb\u5316\u4e3aECDSA\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initSign(privateKey);\n\n        \/\/ \u66f4\u65b0\u6570\u636e\u5230\u7b7e\u540d\u5bf9\u8c61\n        signature.update(data);\n\n        \/\/ \u8ba1\u7b97\u7b7e\u540d\n        return signature.sign();\n    }\n\n    public static void main(String[] args) throws Exception {\n        String message = \"Hello, World!\";\n        byte[] data = message.getBytes();\n\n        \/\/ \u5047\u8bbe\u4f60\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2aPrivateKey\u5bf9\u8c61\uff0c\u8fd9\u91cc\u6211\u4eec\u7701\u7565\u4e86\u5bc6\u94a5\u751f\u6210\u90e8\u5206\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\");\n        keyGen.initialize(256);\n        KeyPair keyPair = keyGen.generateKeyPair();\n        PrivateKey privateKey = keyPair.getPrivate();\n\n        byte[] signatureBytes = signData(data, privateKey);\n        String encodedSignature = Base64.getEncoder().encodeToString(signatureBytes);\n        System.out.println(\"Signature: \" + encodedSignature);\n    }\n}<\/code><\/pre>\n\n\n\n
      3. \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d<\/h3>\n\n\n\n
      import java.security.*;\nimport java.util.Base64;\n\npublic class ECDSAVerifySignatureExample {\n    public static boolean verifySignature(byte[] data, byte[] signatureBytes, PublicKey publicKey) throws Exception {\n        \/\/ \u83b7\u53d6Signature\u5b9e\u4f8b\u5e76\u521d\u59cb\u5316\u4e3aECDSA\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initVerify(publicKey);\n\n        \/\/ \u66f4\u65b0\u6570\u636e\u5230\u7b7e\u540d\u5bf9\u8c61\n        signature.update(data);\n\n        \/\/ \u9a8c\u8bc1\u7b7e\u540d\n        return signature.verify(signatureBytes);\n    }\n\n    public static void main(String[] args) throws Exception {\n        String message = \"Hello, World!\";\n        byte[] data = message.getBytes();\n\n        \/\/ \u5047\u8bbe\u4f60\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2aPublicKey\u5bf9\u8c61\uff0c\u8fd9\u91cc\u6211\u4eec\u7701\u7565\u4e86\u5bc6\u94a5\u751f\u6210\u90e8\u5206\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\");\n        keyGen.initialize(256);\n        KeyPair keyPair = keyGen.generateKeyPair();\n        PublicKey publicKey = keyPair.getPublic();\n\n        \/\/ \u5047\u8bbe\u4f60\u5df2\u7ecf\u6709\u4e86\u4e00\u4e2a\u7b7e\u540d\uff08\u4f8b\u5982\u4ece\u4e0a\u4e00\u6b65\u83b7\u53d6\uff09\n        String encodedSignature = \"your_encoded_signature_here\";\n        byte[] signatureBytes = Base64.getDecoder().decode(encodedSignature);\n\n        boolean isVerified = verifySignature(data, signatureBytes, publicKey);\n        System.out.println(\"Signature verified: \" + isVerified);\n    }\n}<\/code><\/pre>\n\n\n\n
      \u8bf7\u786e\u4fdd\u66ff\u6362\u4e0a\u8ff0\u4ee3\u7801\u4e2d\u7684\"your_encoded_signature_here\"<\/code>\u4e3a\u4f60\u5b9e\u9645\u83b7\u5f97\u7684\u7b7e\u540d\u5b57\u7b26\u4e32\u3002\u6b64\u5916\uff0c\u4e0a\u8ff0\u793a\u4f8b\u4f7f\u7528\u4e86SHA-256\u4f5c\u4e3a\u54c8\u5e0c\u51fd\u6570\uff0c\u8fd9\u662f\u5f53\u524d\u63a8\u8350\u7684\u505a\u6cd5\u4ee5\u63d0\u9ad8\u5b89\u5168\u6027\u3002\u6839\u636e\u9700\u8981\uff0c\u60a8\u53ef\u4ee5\u9009\u62e9\u5176\u4ed6\u692d\u5706\u66f2\u7ebf\u6216\u54c8\u5e0c\u51fd\u6570\u3002<\/p>\n\n\n\n
      \u5f53\u7136\uff01\u4e0b\u9762\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728Java\u4e2d\u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\u3001\u4f7f\u7528\u79c1\u94a5\u521b\u5efa\u7b7e\u540d\u4ee5\u53ca\u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\u7684\u5168\u8fc7\u7a0b\u3002<\/p>\n\n\n\n
      import java.security.*;\nimport java.util.Base64;\n\npublic class ECDSADemo {\n\n    public static void main(String[] args) {\n        try {\n            \/\/ 1. \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\n            KeyPair keyPair = generateKeyPair();\n            PrivateKey privateKey = keyPair.getPrivate();\n            PublicKey publicKey = keyPair.getPublic();\n\n            \/\/ 2. \u8981\u7b7e\u540d\u7684\u6570\u636e\n            String message = \"Hello, World!\";\n            byte[] data = message.getBytes();\n\n            \/\/ 3. \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d\n            byte[] signatureBytes = signData(data, privateKey);\n            String encodedSignature = Base64.getEncoder().encodeToString(signatureBytes);\n            System.out.println(\"Signature: \" + encodedSignature);\n\n            \/\/ 4. \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d\n            boolean isVerified = verifySignature(data, signatureBytes, publicKey);\n            System.out.println(\"Signature verified: \" + isVerified);\n\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n    \/\/ \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\n    public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\");\n        keyGen.initialize(256); \/\/ \u4f7f\u7528256\u4f4d\u7684\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\n        return keyGen.generateKeyPair();\n    }\n\n    \/\/ \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d\n    public static byte[] signData(byte[] data, PrivateKey privateKey) throws Exception {\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initSign(privateKey);\n        signature.update(data);\n        return signature.sign();\n    }\n\n    \/\/ \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d\n    public static boolean verifySignature(byte[] data, byte[] signatureBytes, PublicKey publicKey) throws Exception {\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initVerify(publicKey);\n        signature.update(data);\n        return signature.verify(signatureBytes);\n    }\n}<\/code><\/pre>\n\n\n\n
      \u4ee3\u7801\u8bf4\u660e<\/h3>\n\n\n\n
        \n
      1. \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
          \n
        • \u4f7f\u7528KeyPairGenerator<\/code>\u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\u3002<\/li>\n\n\n\n
        • \u521d\u59cb\u5316\u65f6\u6307\u5b9a\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\u4e3a256\u4f4d\uff08secp256r1<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
            \n
          1. \u8981\u7b7e\u540d\u7684\u6570\u636e<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
              \n
            • \u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6d88\u606f\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002<\/li>\n<\/ul>\n\n\n\n
                \n
              1. \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                  \n
                • \u4f7f\u7528Signature<\/code>\u7c7b\u7684SHA256withECDSA<\/code>\u7b97\u6cd5\u521b\u5efa\u7b7e\u540d\u3002<\/li>\n\n\n\n
                • \u521d\u59cb\u5316\u7b7e\u540d\u5bf9\u8c61\u4e3a\u7b7e\u540d\u6a21\u5f0f\uff0c\u5e76\u4f20\u5165\u79c1\u94a5\u3002<\/li>\n\n\n\n
                • \u66f4\u65b0\u8981\u7b7e\u540d\u7684\u6570\u636e\uff0c\u5e76\u8c03\u7528sign()<\/code>\u65b9\u6cd5\u751f\u6210\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                    \n
                  1. \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                      \n
                    • \u4f7f\u7528Signature<\/code>\u7c7b\u7684SHA256withECDSA<\/code>\u7b97\u6cd5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n\n\n\n
                    • \u521d\u59cb\u5316\u7b7e\u540d\u5bf9\u8c61\u4e3a\u9a8c\u8bc1\u6a21\u5f0f\uff0c\u5e76\u4f20\u5165\u516c\u94a5\u3002<\/li>\n\n\n\n
                    • \u66f4\u65b0\u8981\u9a8c\u8bc1\u7684\u6570\u636e\uff0c\u5e76\u8c03\u7528verify()<\/code>\u65b9\u6cd5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                      \u8fd0\u884c\u7ed3\u679c<\/h3>\n\n\n\n
                      \u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u540e\uff0c\u4f60\u5e94\u8be5\u4f1a\u770b\u5230\u7c7b\u4f3c\u5982\u4e0b\u7684\u8f93\u51fa\uff1a<\/p>\n\n\n\n
                      Signature: MEUCIQC7JZfL8XV7JjK5YUO0WbNwM3vTQHlX+Q==\nSignature verified: true<\/code><\/pre>\n\n\n\n
                      \u8fd9\u8868\u660e\u7b7e\u540d\u6210\u529f\u751f\u6210\u5e76\u4e14\u9a8c\u8bc1\u901a\u8fc7\u3002\u5982\u679c\u7b7e\u540d\u88ab\u7be1\u6539\u6216\u4f7f\u7528\u9519\u8bef\u7684\u516c\u94a5\u9a8c\u8bc1\uff0cverifySignature<\/code>\u65b9\u6cd5\u5c06\u8fd4\u56defalse<\/code>\u3002<\/p>\n\n\n\n
                      \u4e3a\u4ec0\u4e48\u7b7e\u540d\u7684\u662f\u539f\u6587\u800c\u4e0d\u662f\u54c8\u5e0c\u6458\u8981<\/p>\n\n\n\n
                      \u5728\u6570\u5b57\u7b7e\u540d\u7b97\u6cd5\u4e2d\uff0c\u7b7e\u540d\u7684\u5bf9\u8c61\u5b9e\u9645\u4e0a\u662f\u6570\u636e\u7684\u54c8\u5e0c\u6458\u8981\u800c\u4e0d\u662f\u539f\u59cb\u6570\u636e\u672c\u8eab\u3002\u8fd9\u662f\u56e0\u4e3a\u76f4\u63a5\u5bf9\u539f\u59cb\u6570\u636e\u8fdb\u884c\u7b7e\u540d\u5b58\u5728\u4e00\u4e9b\u95ee\u9898\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u5927\u6570\u636e\u65f6\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u89e3\u91ca\u548c\u539f\u56e0\uff1a<\/p>\n\n\n\n
                      \u4e3a\u4ec0\u4e48\u7b7e\u540d\u54c8\u5e0c\u6458\u8981\u800c\u4e0d\u662f\u539f\u6587\uff1f<\/h3>\n\n\n\n
                        \n
                      1. \u6548\u7387\u95ee\u9898<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                          \n
                        • \u5927\u6570\u636e\u5904\u7406<\/strong>\uff1a\u539f\u59cb\u6570\u636e\u53ef\u80fd\u975e\u5e38\u5927\uff0c\u4f8b\u5982\u6587\u4ef6\u6216\u5927\u578b\u6587\u6863\u3002\u76f4\u63a5\u5bf9\u8fd9\u4e9b\u5927\u6570\u636e\u8fdb\u884c\u7b7e\u540d\u4f1a\u5bfc\u81f4\u8ba1\u7b97\u5f00\u9500\u5de8\u5927\uff0c\u8017\u65f6\u8f83\u957f\u3002<\/li>\n\n\n\n
                        • \u54c8\u5e0c\u51fd\u6570\u7684\u7279\u6027<\/strong>\uff1a\u54c8\u5e0c\u51fd\u6570\u5c06\u4efb\u610f\u957f\u5ea6\u7684\u6570\u636e\u6620\u5c04\u4e3a\u56fa\u5b9a\u957f\u5ea6\u7684\u54c8\u5e0c\u503c\uff08\u6458\u8981\uff09\u3002\u56e0\u6b64\uff0c\u65e0\u8bba\u539f\u59cb\u6570\u636e\u591a\u5927\uff0c\u54c8\u5e0c\u6458\u8981\u90fd\u662f\u56fa\u5b9a\u957f\u5ea6\u7684\uff08\u4f8b\u5982\uff0cSHA-256\u751f\u6210256\u4f4d\u7684\u6458\u8981\uff09\uff0c\u8fd9\u5927\u5927\u51cf\u5c11\u4e86\u7b7e\u540d\u8ba1\u7b97\u7684\u65f6\u95f4\u548c\u8d44\u6e90\u6d88\u8017\u3002<\/li>\n<\/ul>\n\n\n\n
                            \n
                          1. \u5b89\u5168\u6027\u95ee\u9898<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                              \n
                            • \u6297\u78b0\u649e\u6027<\/strong>\uff1a\u54c8\u5e0c\u51fd\u6570\u8bbe\u8ba1\u65f6\u4f1a\u8003\u8651\u6297\u78b0\u649e\u6027\uff0c\u5373\u5f88\u96be\u627e\u5230\u4e24\u4e2a\u4e0d\u540c\u7684\u8f93\u5165\u4ea7\u751f\u76f8\u540c\u7684\u54c8\u5e0c\u503c\u3002\u8fd9\u786e\u4fdd\u4e86\u5373\u4f7f\u539f\u59cb\u6570\u636e\u6709\u7ec6\u5fae\u7684\u53d8\u5316\uff0c\u5176\u54c8\u5e0c\u6458\u8981\u4e5f\u4f1a\u663e\u8457\u4e0d\u540c\uff0c\u4ece\u800c\u4fdd\u8bc1\u7b7e\u540d\u7684\u6709\u6548\u6027\u3002<\/li>\n\n\n\n
                            • \u4e0d\u53ef\u9006\u6027<\/strong>\uff1a\u54c8\u5e0c\u51fd\u6570\u662f\u5355\u5411\u7684\uff0c\u65e0\u6cd5\u4ece\u54c8\u5e0c\u6458\u8981\u53cd\u63a8\u51fa\u539f\u59cb\u6570\u636e\u3002\u8fd9\u589e\u52a0\u4e86\u5b89\u5168\u6027\uff0c\u56e0\u4e3a\u5373\u4f7f\u653b\u51fb\u8005\u83b7\u5f97\u4e86\u54c8\u5e0c\u6458\u8981\uff0c\u4e5f\u65e0\u6cd5\u8f7b\u6613\u8fd8\u539f\u51fa\u539f\u59cb\u6570\u636e\u3002<\/li>\n<\/ul>\n\n\n\n
                                \n
                              1. \u6807\u51c6\u5316\u548c\u4e00\u81f4\u6027<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                  \n
                                • \u6807\u51c6\u5316\u7b7e\u540d\u8fc7\u7a0b<\/strong>\uff1a\u901a\u8fc7\u4f7f\u7528\u6807\u51c6\u7684\u54c8\u5e0c\u51fd\u6570\uff08\u5982SHA-256\uff09\uff0c\u7b7e\u540d\u8fc7\u7a0b\u53d8\u5f97\u6807\u51c6\u5316\u3002\u4e0d\u540c\u7cfb\u7edf\u548c\u5e73\u53f0\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u54c8\u5e0c\u51fd\u6570\u6765\u751f\u6210\u548c\u9a8c\u8bc1\u7b7e\u540d\uff0c\u786e\u4fdd\u4e00\u81f4\u6027\u3002<\/li>\n\n\n\n
                                • \u7b80\u5316\u7b7e\u540d\u548c\u9a8c\u8bc1\u6d41\u7a0b<\/strong>\uff1a\u7b7e\u540d\u548c\u9a8c\u8bc1\u8fc7\u7a0b\u53ea\u9700\u8981\u5904\u7406\u56fa\u5b9a\u957f\u5ea6\u7684\u54c8\u5e0c\u6458\u8981\uff0c\u7b80\u5316\u4e86\u6574\u4e2a\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n\n\n\n
                                  ECDSA\u7b7e\u540d\u7684\u5177\u4f53\u6b65\u9aa4<\/h3>\n\n\n\n
                                  \u5728ECDSA\uff08Elliptic Curve Digital Signature Algorithm\uff09\u4e2d\uff0c\u7b7e\u540d\u8fc7\u7a0b\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n\n\n\n
                                    \n
                                  1. \u751f\u6210\u54c8\u5e0c\u6458\u8981<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                      \n
                                    • \u4f7f\u7528\u54c8\u5e0c\u51fd\u6570\uff08\u5982SHA-256\uff09\u5bf9\u539f\u59cb\u6570\u636e\u8fdb\u884c\u54c8\u5e0c\u8fd0\u7b97\uff0c\u751f\u6210\u56fa\u5b9a\u957f\u5ea6\u7684\u54c8\u5e0c\u6458\u8981\u3002<\/li>\n<\/ul>\n\n\n\n
                                         MessageDigest digest = MessageDigest.getInstance(\"SHA-256\");\n   byte[] hashBytes = digest.digest(data);<\/code><\/pre>\n\n\n\n
                                        \n
                                      1. \u751f\u6210\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                          \n
                                        • \u4f7f\u7528\u79c1\u94a5\u548c\u54c8\u5e0c\u6458\u8981\u751f\u6210ECDSA\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                                             Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n   signature.initSign(privateKey);\n   signature.update(hashBytes); \/\/ \u6216\u8005\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u6570\u636e\n   byte[] signatureBytes = signature.sign();<\/code><\/pre>\n\n\n\n
                                            \n
                                          1. \u9a8c\u8bc1\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                              \n
                                            • \u4f7f\u7528\u516c\u94a5\u548c\u54c8\u5e0c\u6458\u8981\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                                                 Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n   signature.initVerify(publicKey);\n   signature.update(hashBytes); \/\/ \u6216\u8005\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u6570\u636e\n   boolean isVerified = signature.verify(signatureBytes);<\/code><\/pre>\n\n\n\n
                                              \u4e3a\u4ec0\u4e48Java\u7684Signature<\/code>\u7c7b\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u539f\u59cb\u6570\u636e\uff1f<\/h3>\n\n\n\n
                                              \u5728Java\u7684Signature<\/code>\u7c7b\u4e2d\uff0c\u867d\u7136\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u4f20\u9012\u539f\u59cb\u6570\u636e\u7ed9update<\/code>\u65b9\u6cd5\uff0c\u4f46\u5b9e\u9645\u4e0aSignature<\/code>\u7c7b\u5185\u90e8\u4f1a\u81ea\u52a8\u5904\u7406\u54c8\u5e0c\u6458\u8981\u7684\u751f\u6210\u3002\u5177\u4f53\u6765\u8bf4\uff1a<\/p>\n\n\n\n
                                                \n
                                              • \u81ea\u52a8\u54c8\u5e0c<\/strong>\uff1a\u5f53\u4f60\u8c03\u7528signature.update(data)<\/code>\u65f6\uff0cSignature<\/code>\u7c7b\u4f1a\u5c06\u6570\u636e\u7d2f\u79ef\u8d77\u6765\uff0c\u5e76\u5728\u8c03\u7528signature.sign()<\/code>\u6216signature.verify()<\/code>\u65f6\u81ea\u52a8\u5e94\u7528\u6307\u5b9a\u7684\u54c8\u5e0c\u51fd\u6570\uff08\u4f8b\u5982SHA-256\uff09\u6765\u751f\u6210\u54c8\u5e0c\u6458\u8981\u3002<\/li>\n\n\n\n
                                              • \u900f\u660e\u6027<\/strong>\uff1a\u8fd9\u79cd\u900f\u660e\u6027\u4f7f\u5f97\u5f00\u53d1\u8005\u65e0\u9700\u624b\u52a8\u8fdb\u884c\u54c8\u5e0c\u6458\u8981\u7684\u751f\u6210\uff0c\u7b80\u5316\u4e86\u7b7e\u540d\u548c\u9a8c\u8bc1\u7684\u8fc7\u7a0b\u3002<\/li>\n<\/ul>\n\n\n\n
                                                \u793a\u4f8b\u4ee3\u7801\u89e3\u91ca<\/h3>\n\n\n\n
                                                \u4ee5\u4e0b\u662f\u5b8c\u6574\u7684\u793a\u4f8b\u4ee3\u7801\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728Java\u4e2d\u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\u3001\u4f7f\u7528\u79c1\u94a5\u521b\u5efa\u7b7e\u540d\u4ee5\u53ca\u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\u7684\u5168\u8fc7\u7a0b\u3002\u4ee3\u7801\u4e2d\u5305\u542b\u4e86\u5bf9\u539f\u59cb\u6570\u636e\u7684\u5904\u7406\u548c\u7b7e\u540d\u8fc7\u7a0b\u7684\u7ec6\u8282\u3002<\/p>\n\n\n\n
                                                import java.security.*;\nimport java.util.Base64;\n\npublic class ECDSADemo {\n\n    public static void main(String[] args) {\n        try {\n            \/\/ 1. \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\n            KeyPair keyPair = generateKeyPair();\n            PrivateKey privateKey = keyPair.getPrivate();\n            PublicKey publicKey = keyPair.getPublic();\n\n            \/\/ 2. \u8981\u7b7e\u540d\u7684\u6570\u636e\n            String message = \"Hello, World!\";\n            byte[] data = message.getBytes();\n\n            \/\/ 3. \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d\n            byte[] signatureBytes = signData(data, privateKey);\n            String encodedSignature = Base64.getEncoder().encodeToString(signatureBytes);\n            System.out.println(\"Signature: \" + encodedSignature);\n\n            \/\/ 4. \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d\n            boolean isVerified = verifySignature(data, signatureBytes, publicKey);\n            System.out.println(\"Signature verified: \" + isVerified);\n\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n\n    \/\/ \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\n    public static KeyPair generateKeyPair() throws NoSuchAlgorithmException {\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\");\n        keyGen.initialize(256); \/\/ \u4f7f\u7528256\u4f4d\u7684\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\n        return keyGen.generateKeyPair();\n    }\n\n    \/\/ \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d\n    public static byte[] signData(byte[] data, PrivateKey privateKey) throws Exception {\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initSign(privateKey);\n        signature.update(data); \/\/ \u81ea\u52a8\u5e94\u7528SHA-256\u54c8\u5e0c\u51fd\u6570\n        return signature.sign();\n    }\n\n    \/\/ \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d\n    public static boolean verifySignature(byte[] data, byte[] signatureBytes, PublicKey publicKey) throws Exception {\n        Signature signature = Signature.getInstance(\"SHA256withECDSA\");\n        signature.initVerify(publicKey);\n        signature.update(data); \/\/ \u81ea\u52a8\u5e94\u7528SHA-256\u54c8\u5e0c\u51fd\u6570\n        return signature.verify(signatureBytes);\n    }\n}<\/code><\/pre>\n\n\n\n
                                                \u4ee3\u7801\u8bf4\u660e<\/h3>\n\n\n\n
                                                  \n
                                                1. \u751f\u6210ECDSA\u5bc6\u94a5\u5bf9<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                                    \n
                                                  • \u4f7f\u7528KeyPairGenerator<\/code>\u751f\u6210ECDSA\u5bc6\u94a5\u5bf9\u3002<\/li>\n\n\n\n
                                                  • \u521d\u59cb\u5316\u65f6\u6307\u5b9a\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\u4e3a256\u4f4d\uff08secp256r1<\/code>\uff09\u3002<\/li>\n<\/ul>\n\n\n\n
                                                      \n
                                                    1. \u8981\u7b7e\u540d\u7684\u6570\u636e<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                                        \n
                                                      • \u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6d88\u606f\uff0c\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u8282\u6570\u7ec4\u3002<\/li>\n<\/ul>\n\n\n\n
                                                          \n
                                                        1. \u4f7f\u7528\u79c1\u94a5\u521b\u5efaECDSA\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                                            \n
                                                          • \u4f7f\u7528Signature<\/code>\u7c7b\u7684SHA256withECDSA<\/code>\u7b97\u6cd5\u521b\u5efa\u7b7e\u540d\u3002<\/li>\n\n\n\n
                                                          • \u521d\u59cb\u5316\u7b7e\u540d\u5bf9\u8c61\u4e3a\u7b7e\u540d\u6a21\u5f0f\uff0c\u5e76\u4f20\u5165\u79c1\u94a5\u3002<\/li>\n\n\n\n
                                                          • \u4f7f\u7528signature.update(data)<\/code>\u65b9\u6cd5\u66f4\u65b0\u8981\u7b7e\u540d\u7684\u6570\u636e\u3002Signature<\/code>\u7c7b\u4f1a\u81ea\u52a8\u5e94\u7528SHA-256\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u54c8\u5e0c\u6458\u8981\u3002<\/li>\n\n\n\n
                                                          • \u8c03\u7528signature.sign()<\/code>\u65b9\u6cd5\u751f\u6210\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                                                              \n
                                                            1. \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1ECDSA\u7b7e\u540d<\/strong>\uff1a<\/li>\n<\/ol>\n\n\n\n
                                                                \n
                                                              • \u4f7f\u7528Signature<\/code>\u7c7b\u7684SHA256withECDSA<\/code>\u7b97\u6cd5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n\n\n\n
                                                              • \u521d\u59cb\u5316\u7b7e\u540d\u5bf9\u8c61\u4e3a\u9a8c\u8bc1\u6a21\u5f0f\uff0c\u5e76\u4f20\u5165\u516c\u94a5\u3002<\/li>\n\n\n\n
                                                              • \u4f7f\u7528signature.update(data)<\/code>\u65b9\u6cd5\u66f4\u65b0\u8981\u9a8c\u8bc1\u7684\u6570\u636e\u3002\u540c\u6837\uff0cSignature<\/code>\u7c7b\u4f1a\u81ea\u52a8\u5e94\u7528SHA-256\u54c8\u5e0c\u51fd\u6570\u751f\u6210\u54c8\u5e0c\u6458\u8981\u3002<\/li>\n\n\n\n
                                                              • \u8c03\u7528signature.verify(signatureBytes)<\/code>\u65b9\u6cd5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                \u8fd0\u884c\u7ed3\u679c<\/h3>\n\n\n\n
                                                                \u8fd0\u884c\u4e0a\u8ff0\u4ee3\u7801\u540e\uff0c\u4f60\u5e94\u8be5\u4f1a\u770b\u5230\u7c7b\u4f3c\u5982\u4e0b\u7684\u8f93\u51fa\uff1a<\/p>\n\n\n\n
                                                                Signature: MEUCIQDQFg5zEo9yQeK4Z5mXcTgX6w==\nSignature verified: true<\/code><\/pre>\n\n\n\n
                                                                \u8fd9\u8868\u660e\u7b7e\u540d\u6210\u529f\u751f\u6210\u5e76\u4e14\u9a8c\u8bc1\u901a\u8fc7\u3002\u5982\u679c\u7b7e\u540d\u88ab\u7be1\u6539\u6216\u4f7f\u7528\u9519\u8bef\u7684\u516c\u94a5\u9a8c\u8bc1\uff0cverifySignature<\/code>\u65b9\u6cd5\u5c06\u8fd4\u56defalse<\/code>\u3002<\/p>\n\n\n\n
                                                                \u603b\u7ed3<\/h3>\n\n\n\n
                                                                  \n
                                                                • \u54c8\u5e0c\u6458\u8981\u7684\u91cd\u8981\u6027<\/strong>\uff1a\u901a\u8fc7\u4f7f\u7528\u54c8\u5e0c\u6458\u8981\uff0c\u6570\u5b57\u7b7e\u540d\u7b97\u6cd5\u80fd\u591f\u9ad8\u6548\u4e14\u5b89\u5168\u5730\u5904\u7406\u4efb\u610f\u957f\u5ea6\u7684\u6570\u636e\u3002<\/li>\n\n\n\n
                                                                • Java Signature<\/code>\u7c7b\u7684\u900f\u660e\u6027<\/strong>\uff1aJava\u7684Signature<\/code>\u7c7b\u5728\u5185\u90e8\u81ea\u52a8\u5904\u7406\u54c8\u5e0c\u6458\u8981\u7684\u751f\u6210\uff0c\u7b80\u5316\u4e86\u7b7e\u540d\u548c\u9a8c\u8bc1\u7684\u8fc7\u7a0b\u3002<\/li>\n\n\n\n
                                                                • \u5b89\u5168\u6027\u4fdd\u8bc1<\/strong>\uff1a\u54c8\u5e0c\u51fd\u6570\u7684\u6297\u78b0\u649e\u6027\u548c\u4e0d\u53ef\u9006\u6027\u786e\u4fdd\u4e86\u7b7e\u540d\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n\n\n\n
                                                                  \u5e0c\u671b\u8fd9\u80fd\u5e2e\u52a9\u4f60\u7406\u89e3\u4e3a\u4ec0\u4e48\u5728\u6570\u5b57\u7b7e\u540d\u4e2d\u7b7e\u540d\u7684\u662f\u54c8\u5e0c\u6458\u8981\u800c\u4e0d\u662f\u539f\u59cb\u6570\u636e\u3002\u5982\u679c\u4f60\u6709\u4efb\u4f55\u8fdb\u4e00\u6b65\u7684\u95ee\u9898\uff0c\u8bf7\u968f\u65f6\u63d0\u95ee\uff01<\/p>\n\n\n\n
                                                                  sm2\u662f\u4ec0\u4e48\u52a0\u5bc6\u683c\u5f0f<\/p>\n\n\n\n
                                                                  SM2\u662f\u4e00\u79cd\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5c5e\u4e8e\u4e2d\u56fd\u56fd\u5bb6\u5bc6\u7801\u7ba1\u7406\u5c40\u53d1\u5e03\u7684\u56fd\u5bc6\u6807\u51c6\u4e4b\u4e00\uff08GM\/T 0003-2012\uff09\u3002\u5b83\u4e3b\u8981\u7528\u4e8e\u6570\u5b57\u7b7e\u540d\u548c\u5bc6\u94a5\u4ea4\u6362\u3002SM2\u57fa\u4e8e\u692d\u5706\u66f2\u7ebf\u5bc6\u7801\u5b66\uff08ECC\uff09\uff0c\u4f7f\u7528\u7279\u5b9a\u7684\u692d\u5706\u66f2\u7ebf\u53c2\u6570\u96c6\uff0c\u63d0\u4f9b\u4e86\u8f83\u9ad8\u7684\u5b89\u5168\u6027\uff0c\u5e76\u4e14\u5728\u8ba1\u7b97\u6548\u7387\u4e0a\u4e5f\u6709\u4e00\u5b9a\u4f18\u52bf\u3002<\/p>\n\n\n\n
                                                                  SM2\u7b97\u6cd5\u53ef\u4ee5\u7528\u4e8e\u751f\u6210\u516c\u94a5\/\u79c1\u94a5\u5bf9\uff0c\u901a\u8fc7\u79c1\u94a5\u8fdb\u884c\u6570\u636e\u7b7e\u540d\uff0c\u518d\u7531\u5bf9\u5e94\u7684\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\u7684\u771f\u5b9e\u6027\uff1b\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5bc6\u94a5\u534f\u5546\uff0c\u5373\u53cc\u65b9\u53ef\u4ee5\u901a\u8fc7\u5404\u81ea\u7684\u79c1\u94a5\u548c\u5bf9\u65b9\u7684\u516c\u94a5\u5171\u540c\u8ba1\u7b97\u51fa\u4e00\u4e2a\u5171\u4eab\u7684\u79d8\u5bc6\u503c\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u88ab\u79f0\u4e3a\u5bc6\u94a5\u534f\u5546\u6216\u5bc6\u94a5\u4ea4\u6362\u3002<\/p>\n\n\n\n
                                                                  \u5728Java\u4e2d\u5b9e\u73b0SM2\u7b97\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528Bouncy Castle\u5e93\u6216\u8005\u4e00\u4e9b\u4e13\u95e8\u652f\u6301\u56fd\u5bc6\u6807\u51c6\u7684\u5e93\uff0c\u4f8b\u5982BCProv-jdk15on\uff08Bouncy Castle\u7684\u4e00\u4e2a\u5206\u652f\uff09\u5df2\u7ecf\u5305\u542b\u4e86\u5bf9SM2\u7684\u652f\u6301\u3002<\/p>\n\n\n\n
                                                                  \u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528Bouncy Castle\u6765\u751f\u6210SM2\u5bc6\u94a5\u5bf9\u3001\u7b7e\u540d\u4ee5\u53ca\u9a8c\u8bc1\u7b7e\u540d\uff1a<\/p>\n\n\n\n
                                                                  import org.bouncycastle.jce.provider.BouncyCastleProvider;\nimport org.bouncycastle.util.encoders.Hex;\n\nimport java.security.*;\nimport java.security.spec.ECGenParameterSpec;\n\npublic class SM2Example {\n    static {\n        Security.addProvider(new BouncyCastleProvider());\n    }\n\n    public static void main(String[] args) throws Exception {\n        \/\/ \u751f\u6210SM2\u5bc6\u94a5\u5bf9\n        KeyPairGenerator keyGen = KeyPairGenerator.getInstance(\"EC\", \"BC\");\n        ECGenParameterSpec spec = new ECGenParameterSpec(\"sm2p256v1\"); \/\/ \u6307\u5b9aSM2\u66f2\u7ebf\u53c2\u6570\n        keyGen.initialize(spec);\n        KeyPair keyPair = keyGen.generateKeyPair();\n        PrivateKey privateKey = keyPair.getPrivate();\n        PublicKey publicKey = keyPair.getPublic();\n\n        \/\/ \u5f85\u7b7e\u540d\u7684\u6d88\u606f\n        String message = \"Hello, SM2!\";\n        byte[] data = message.getBytes();\n\n        \/\/ \u4f7f\u7528\u79c1\u94a5\u7b7e\u540d\n        Signature signature = Signature.getInstance(\"SM3withSM2\", \"BC\");\n        signature.initSign(privateKey);\n        signature.update(data);\n        byte[] signedData = signature.sign();\n\n        System.out.println(\"Signed Data: \" + Hex.toHexString(signedData));\n\n        \/\/ \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\n        signature.initVerify(publicKey);\n        signature.update(data);\n        boolean isVerified = signature.verify(signedData);\n\n        if (isVerified) {\n            System.out.println(\"Signature verified successfully.\");\n        } else {\n            System.out.println(\"Signature verification failed.\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
                                                                  \u8bf7\u6ce8\u610f\uff0c\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u9996\u5148\u5c06Bouncy Castle\u4f5c\u4e3a\u5b89\u5168\u63d0\u4f9b\u8005\u6dfb\u52a0\u5230\u4e86Java\u7684\u5b89\u5168\u6846\u67b6\u4e2d\u3002\u7136\u540e\u521b\u5efa\u4e86\u4e00\u4e2aSM2\u66f2\u7ebf\u53c2\u6570\u89c4\u683c\u7684\u5bf9\u8c61\uff0c\u5e76\u7528\u5b83\u521d\u59cb\u5316\u4e86\u4e00\u4e2aEC\u5bc6\u94a5\u5bf9\u751f\u6210\u5668\u4ee5\u751f\u6210SM2\u5bc6\u94a5\u5bf9\u3002<\/p>\n\n\n\n
                                                                  \u63a5\u7740\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u6761\u6d88\u606f\u5e76\u4f7f\u7528\u79c1\u94a5\u5bf9\u5176\u8fdb\u884c\u7b7e\u540d\uff0c\u6700\u540e\u5229\u7528\u516c\u94a5\u6765\u9a8c\u8bc1\u8be5\u7b7e\u540d\u7684\u6709\u6548\u6027\u3002<\/p>\n\n\n\n
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