{"id":114725,"date":"2024-03-22T23:55:00","date_gmt":"2024-03-22T14:55:00","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%aersa%e6%9a%97%e5%8f%b7%e5%8c%96%e3%81%a8%e5%be%a9%e5%8f%b7%e5%8c%96%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95\/"},"modified":"2024-04-05T13:28:13","modified_gmt":"2024-04-05T04:28:13","slug":"python%e3%81%aersa%e6%9a%97%e5%8f%b7%e5%8c%96%e3%81%a8%e5%be%a9%e5%8f%b7%e5%8c%96%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/python%e3%81%aersa%e6%9a%97%e5%8f%b7%e5%8c%96%e3%81%a8%e5%be%a9%e5%8f%b7%e5%8c%96%e3%81%ae%e5%ae%9f%e8%a3%85%e6%96%b9%e6%b3%95\/","title":{"rendered":"Python\u306eRSA\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306e\u5b9f\u88c5\u65b9\u6cd5"},"content":{"rendered":"<p>Python\u3067\u306f\u3001 cryptography\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066RSA\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4f8b\u3092\u6319\u3052\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">from<\/span> cryptography.hazmat.backends <span class=\"hljs-keyword\">import<\/span> default_backend\r\n<span class=\"hljs-keyword\">from<\/span> cryptography.hazmat.primitives <span class=\"hljs-keyword\">import<\/span> serialization, hashes\r\n<span class=\"hljs-keyword\">from<\/span> cryptography.hazmat.primitives.asymmetric <span class=\"hljs-keyword\">import<\/span> rsa, padding\r\n\r\n<span class=\"hljs-comment\"># \u751f\u6210RSA\u5bc6\u94a5\u5bf9<\/span>\r\nprivate_key = rsa.generate_private_key(\r\n    public_exponent=<span class=\"hljs-number\">65537<\/span>,\r\n    key_size=<span class=\"hljs-number\">2048<\/span>,\r\n    backend=default_backend()\r\n)\r\npublic_key = private_key.public_key()\r\n\r\n<span class=\"hljs-comment\"># \u4f7f\u7528\u516c\u94a5\u52a0\u5bc6<\/span>\r\nmessage = <span class=\"hljs-string\">b\"Hello, world!\"<\/span>\r\nencrypted = public_key.encrypt(\r\n    message,\r\n    padding.OAEP(\r\n        mgf=padding.MGF1(algorithm=hashes.SHA256()),\r\n        algorithm=hashes.SHA256(),\r\n        label=<span class=\"hljs-literal\">None<\/span>\r\n    )\r\n)\r\n\r\n<span class=\"hljs-comment\"># \u4f7f\u7528\u79c1\u94a5\u89e3\u5bc6<\/span>\r\ndecrypted = private_key.decrypt(\r\n    encrypted,\r\n    padding.OAEP(\r\n        mgf=padding.MGF1(algorithm=hashes.SHA256()),\r\n        algorithm=hashes.SHA256(),\r\n        label=<span class=\"hljs-literal\">None<\/span>\r\n    )\r\n)\r\n\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"\u539f\u59cb\u6d88\u606f:\"<\/span>, message)\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"\u52a0\u5bc6\u540e:\"<\/span>, encrypted)\r\n<span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"\u89e3\u5bc6\u540e:\"<\/span>, decrypted)\r\n<\/code><\/pre>\n<p>\u4e0a\u8a18\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3001\u307e\u305arsa.generate_private_key\u95a2\u6570\u3067RSA\u30ad\u30fc\u30da\u30a2\u3092\u751f\u6210\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u5fa9\u53f7\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b\u3001\u5143\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3001\u5fa9\u53f7\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u305d\u308c\u305e\u308c\u30d7\u30ea\u30f3\u30c8\u30a2\u30a6\u30c8\u3057\u307e\u3059\u3002<\/p>\n<p>\u6697\u53f7\u5316\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3042\u3089\u304b\u3058\u3081\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code>pip install cryptography\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Python\u3067\u306f\u3001 cryptography\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066RSA\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u4f8b\u3092\u6319\u3052\u307e\u3059\u3002 from cryptography.hazmat.backends import default_ [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-114725","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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