{"id":1854,"date":"2023-10-12T10:17:11","date_gmt":"2023-10-12T02:17:11","guid":{"rendered":"http:\/\/blog.xtaa.cn\/?p=1854"},"modified":"2023-10-12T10:17:11","modified_gmt":"2023-10-12T02:17:11","slug":"%e5%8a%a0%e5%af%86%e5%92%8c%e8%a7%a3%e5%af%86%e6%8a%80%e6%9c%af","status":"publish","type":"post","link":"http:\/\/blog.xtaa.cn\/index.php\/2023\/10\/12\/%e5%8a%a0%e5%af%86%e5%92%8c%e8%a7%a3%e5%af%86%e6%8a%80%e6%9c%af\/","title":{"rendered":"\u52a0\u5bc6\u548c\u89e3\u5bc6\u6280\u672f"},"content":{"rendered":"\n<ol class=\"wp-block-list\">\n<li>\u52a0\u5bc6\u548c\u89e3\u5bc6\u7684\u57fa\u672c\u6982\u5ff5<br>\u52a0\u5bc6\uff1a\u52a0\u5bc6\u662f\u4e00\u79cd\u5c06\u6570\u636e\uff08\u660e\u6587\uff09\u8f6c\u6362\u4e3a\u5176\u4ed6\u683c\u5f0f\uff08\u5bc6\u6587\uff09\u7684\u8fc7\u7a0b\uff0c\u4ee5\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u4eba\u5458\u8bbf\u95ee\u3002\u52a0\u5bc6\u4f7f\u7528\u7279\u5b9a\u7684\u7b97\u6cd5\uff08\u79f0\u4e3a\u52a0\u5bc6\u7b97\u6cd5\uff09\u548c\u5bc6\u94a5\u6765\u6267\u884c\u6b64\u8f6c\u6362\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u89e3\u5bc6\uff1a\u89e3\u5bc6\u662f\u5c06\u52a0\u5bc6\u540e\u7684\u6570\u636e\uff08\u5bc6\u6587\uff09\u8fd8\u539f\u4e3a\u539f\u59cb\u6570\u636e\uff08\u660e\u6587\uff09\u7684\u8fc7\u7a0b\u3002\u89e3\u5bc6\u901a\u5e38\u4f7f\u7528\u76f8\u540c\u7684\u52a0\u5bc6\u7b97\u6cd5\u548c\u76f8\u5e94\u7684\u5bc6\u94a5\u6765\u8fdb\u884c\u3002<\/p>\n\n\n\n<p>\u5bc6\u94a5\uff1a\u5bc6\u94a5\u662f\u7528\u4e8e\u52a0\u5bc6\u548c\u89e3\u5bc6\u6570\u636e\u7684\u7279\u5b9a\u5b57\u7b26\u5e8f\u5217\u3002\u5bc6\u94a5\u7684\u957f\u5ea6\u548c\u590d\u6742\u6027\u76f4\u63a5\u5f71\u54cd\u5230\u52a0\u5bc6\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u5bf9\u79f0\u52a0\u5bc6<br>\u5bf9\u79f0\u52a0\u5bc6\u662f\u4e00\u79cd\u4f7f\u7528\u76f8\u540c\u7684\u5bc6\u94a5\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u7684\u52a0\u5bc6\u65b9\u6cd5\u3002\u8fd9\u610f\u5473\u7740\u52a0\u5bc6\u548c\u89e3\u5bc6\u8fc7\u7a0b\u4e2d\u4f7f\u7528\u7684\u5bc6\u94a5\u662f\u76f8\u540c\u7684\u3002\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u901a\u5e38\u66f4\u5feb\uff0c\u4f46\u5bc6\u94a5\u7ba1\u7406\u53ef\u80fd\u4f1a\u6210\u4e3a\u4e00\u4e2a\u95ee\u9898\uff0c\u56e0\u4e3a\u6bcf\u5bf9\u901a\u4fe1\u65b9\u90fd\u9700\u8981\u5171\u4eab\u76f8\u540c\u7684\u5bc6\u94a5\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5e38\u89c1\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff1a<\/p>\n\n\n\n<p>AES\uff08Advanced Encryption Standard\uff09<br>DES\uff08Data Encryption Standard\uff09<br>3DES\uff08Triple Data Encryption Standard\uff09<br>RC4\uff08Rivest Cipher 4\uff09<br>Blowfish<br>\u5b9e\u4f8b\uff1a\u4f7f\u7528Python\u7684cryptography\u5e93\u8fdb\u884cAES\u52a0\u5bc6\u548c\u89e3\u5bc6\uff1a<br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes\r\nfrom cryptography.hazmat.primitives import padding\r\nfrom cryptography.hazmat.backends import default_backend\r\nimport os\r\n\r\n# \u751f\u6210\u4e00\u4e2a\u968f\u673a\u5bc6\u94a5\r\nkey = os.urandom(32)\r\n\r\n# \u751f\u6210\u4e00\u4e2a\u968f\u673a\u521d\u59cb\u5316\u5411\u91cf\uff08IV\uff09\r\niv = os.urandom(16)\r\n\r\n# \u4f7f\u7528AES\u52a0\u5bc6\u7b97\u6cd5\u548cCBC\u6a21\u5f0f\u521b\u5efa\u4e00\u4e2a\u52a0\u5bc6\u5bf9\u8c61\r\ncipher = Cipher(algorithms.AES(key), modes.CBC(iv), backend=default_backend())\r\n\r\n# \u521b\u5efa\u4e00\u4e2a\u52a0\u5bc6\u5668\u5bf9\u8c61\r\nencryptor = cipher.encryptor()\r\n\r\n# \u660e\u6587\u6570\u636e\r\nplaintext = b\"Hello, world!\"\r\n\r\n# \u4f7f\u7528PKCS7\u586b\u5145\u5bf9\u660e\u6587\u8fdb\u884c\u586b\u5145\r\npadder = padding.PKCS7(128).padder()\r\npadded_data = padder.update(plaintext) + padder.finalize()\r\n\r\n# \u5bf9\u586b\u5145\u540e\u7684\u660e\u6587\u8fdb\u884c\u52a0\u5bc6\r\nciphertext = encryptor.update(padded_data) + encryptor.finalize()\r\n\r\n# \u521b\u5efa\u4e00\u4e2a\u89e3\u5bc6\u5668\u5bf9\u8c61\r\ndecryptor = cipher.decryptor()\r\n\r\n# \u5bf9\u5bc6\u6587\u8fdb\u884c\u89e3\u5bc6\r\ndecrypted_data = decryptor.update(ciphertext) + decryptor.finalize()\r\n\r\n# \u4f7f\u7528PKCS7\u586b\u5145\u7684\u89e3\u9664\u5668\u5bf9\u89e3\u5bc6\u540e\u7684\u6570\u636e\u8fdb\u884c\u89e3\u586b\u5145\r\nunpadder = padding.PKCS7(128).unpadder()\r\nunpadded_data = unpadder.update(decrypted_data) + unpadder.finalize()\r\n\r\nassert plaintext == unpadded_data\r\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u975e\u5bf9\u79f0\u52a0\u5bc6<br>\u975e\u5bf9\u79f0\u52a0\u5bc6\u662f\u4e00\u79cd\u4f7f\u7528\u4e24\u4e2a\u4e0d\u540c\u5bc6\u94a5\u8fdb\u884c\u52a0\u5bc6\u548c\u89e3\u5bc6\u7684\u52a0\u5bc6\u65b9\u6cd5\uff1a\u4e00\u4e2a\u516c\u94a5\u7528\u4e8e\u52a0\u5bc6\u6570\u636e\uff0c\u4e00\u4e2a\u79c1\u94a5\u7528\u4e8e\u89e3\u5bc6\u6570\u636e\u3002\u516c\u94a5\u53ef\u4ee5\u516c\u5f00\u5206\u4eab\uff0c\u800c\u79c1\u94a5\u5fc5\u987b\u4fdd\u5bc6\u3002\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u901a\u5e38\u6bd4\u5bf9\u79f0\u52a0\u5bc6\u6162\uff0c\u4f46\u89e3\u51b3\u4e86\u5bc6\u94a5\u7ba1\u7406\u7684\u95ee\u9898\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u5e38\u89c1\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\uff1a<\/p>\n\n\n\n<p>RSA\uff08Rivest-Shamir-Adleman\uff09<br>DSA\uff08Digital Signature Algorithm\uff09<br>ElGamal<br>ECC\uff08Elliptic Curve Cryptography\uff09<br>\u5b9e\u4f8b\uff1a\u4f7f\u7528Python\u7684cryptography\u5e93\u8fdb\u884cRSA\u52a0\u5bc6\u548c\u89e3\u5bc6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from cryptography.hazmat.primitives.asymmetric import rsa\r\nfrom cryptography.hazmat.primitives.asymmetric importpadding as asym_padding\r\nfrom cryptography.hazmat.primitives import serialization, hashes\r\nfrom cryptography.hazmat.backends import default_backend\r\n\r\n# \u751f\u6210RSA\u5bc6\u94a5\u5bf9\r\nprivate_key = rsa.generate_private_key(\r\n    public_exponent=65537,\r\n    key_size=2048,\r\n    backend=default_backend()\r\n)\r\npublic_key = private_key.public_key()\r\n\r\n# \u660e\u6587\u6570\u636e\r\nplaintext = b\"Hello, world!\"\r\n\r\n# \u4f7f\u7528\u516c\u94a5\u5bf9\u660e\u6587\u8fdb\u884c\u52a0\u5bc6\r\nciphertext = public_key.encrypt(\r\n    plaintext,\r\n    asym_padding.OAEP(\r\n        mgf=asym_padding.MGF1(algorithm=hashes.SHA256()),\r\n        algorithm=hashes.SHA256(),\r\n        label=None\r\n    )\r\n)\r\n\r\n# \u4f7f\u7528\u79c1\u94a5\u5bf9\u5bc6\u6587\u8fdb\u884c\u89e3\u5bc6\r\ndecrypted_data = private_key.decrypt(\r\n    ciphertext,\r\n    asym_padding.OAEP(\r\n        mgf=asym_padding.MGF1(algorithm=hashes.SHA256()),\r\n        algorithm=hashes.SHA256(),\r\n        label=None\r\n    )\r\n)\r\n\r\nassert plaintext == decrypted_data\r\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u54c8\u5e0c\u51fd\u6570<br>\u54c8\u5e0c\u51fd\u6570\u662f\u4e00\u79cd\u5c06\u4efb\u610f\u957f\u5ea6\u7684\u6570\u636e\u6620\u5c04\u5230\u56fa\u5b9a\u957f\u5ea6\u7684\u8f93\u51fa\u7684\u5355\u5411\u51fd\u6570\u3002\u54c8\u5e0c\u51fd\u6570\u5177\u6709\u4ee5\u4e0b\u7279\u6027\uff1a<\/li>\n<\/ol>\n\n\n\n<p>\u8f93\u5165\u53d8\u5316\u65f6\uff0c\u8f93\u51fa\u6709\u5f88\u5927\u6982\u7387\u53d1\u751f\u53d8\u5316\uff08\u654f\u611f\u6027\uff09<br>\u4e0d\u540c\u8f93\u5165\u4ea7\u751f\u76f8\u540c\u8f93\u51fa\u7684\u6982\u7387\u6781\u4f4e\uff08\u78b0\u649e\u62b5\u6297\uff09<br>\u65e0\u6cd5\u4ece\u8f93\u51fa\u53cd\u63a8\u8f93\u5165\uff08\u5355\u5411\u6027\uff09<br>\u5e38\u89c1\u54c8\u5e0c\u7b97\u6cd5\uff1a<\/p>\n\n\n\n<p>MD5\uff08Message-Digest Algorithm 5\uff09<br>SHA-1\uff08Secure Hash Algorithm 1\uff09<br>SHA-2\uff08Secure Hash Algorithm 2\uff09<br>SHA-3\uff08Secure Hash Algorithm 3\uff09<br>\u5b9e\u4f8b\uff1a\u4f7f\u7528Python\u7684hashlib\u5e93\u8fdb\u884cSHA-256\u54c8\u5e0c\uff1a<br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import hashlib\r\n\r\n# \u9700\u8981\u8fdb\u884c\u54c8\u5e0c\u7684\u6570\u636e\r\ndata = b\"Hello, world!\"\r\n\r\n# \u8ba1\u7b97SHA-256\u54c8\u5e0c\u503c\r\nhash_object = hashlib.sha256(data)\r\nhash_hex = hash_object.hexdigest()\r\n\r\nprint(\"SHA-256 hash:\", hash_hex)\r\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">5. \u6570\u5b57\u7b7e\u540d<\/h4>\n\n\n\n<p>\u6570\u5b57\u7b7e\u540d\u662f\u4e00\u79cd\u7528\u4e8e\u9a8c\u8bc1\u6570\u636e\u5b8c\u6574\u6027\u548c\u8eab\u4efd\u9a8c\u8bc1\u7684\u6280\u672f\u3002\u6570\u5b57\u7b7e\u540d\u7684\u57fa\u672c\u539f\u7406\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53d1\u9001\u8005\u4f7f\u7528\u79c1\u94a5\u5bf9\u6570\u636e\u751f\u6210\u7b7e\u540d\u3002<\/li>\n\n\n\n<li>\u63a5\u6536\u8005\u4f7f\u7528\u53d1\u9001\u8005\u7684\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\u3002<\/li>\n<\/ol>\n\n\n\n<p><strong>\u5b9e\u4f8b<\/strong>\uff1a\u4f7f\u7528Python\u7684<code>cryptography<\/code>\u5e93\u8fdb\u884cRSA\u6570\u5b57\u7b7e\u540d\u548c\u9a8c\u8bc1\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from cryptography.hazmat.primitives.asymmetric import padding as asym_padding\r\nfrom cryptography.hazmat.primitives import hashes\r\n\r\n# \u9700\u8981\u7b7e\u540d\u7684\u6570\u636e\r\ndata = b\"Hello, world!\"\r\n\r\n# \u4f7f\u7528\u79c1\u94a5\u5bf9\u6570\u636e\u751f\u6210\u7b7e\u540d\r\nsignature = private_key.sign(\r\n    data,\r\n    asym_padding.PSS(\r\n        mgf=asym_padding.MGF1(hashes.SHA256()),\r\n        salt_length=asym_padding.PSS.MAX_LENGTH\r\n    ),\r\n    hashes.SHA256()\r\n)\r\n\r\n# \u4f7f\u7528\u516c\u94a5\u9a8c\u8bc1\u7b7e\u540d\r\ntry:\r\n    public_key.verify(\r\n        signature,\r\n        data,\r\n        asym_padding.PSS(\r\n            mgf=asym_padding.MGF1(hashes.SHA256()),\r\n            salt_length=asym_padding.PSS.MAX_LENGTH\r\n        ),\r\n        hashes.SHA256()\r\n    )\r\n    print(\"Signature is valid.\")\r\nexcept Exception as e:\r\n    print(\"Signature is invalid:\", e)\r\n<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" 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KMS\u3001Google Cloud 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