{"blog_title":"..\u305f\u308c\u308d\u3050..","categories":["Java","\u958b\u767a"],"author_name":"naga_sawa","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnaga-sawa.hatenadiary.org%2Fentry%2F20170730%2F1501404099\" title=\" Java (JCE) \u3067 AES \u6697\u53f7\u5316\u3059\u308b\u3068\u304d\u306e PKCS#5 \u306e\u5b9f\u614b\u306f PKCS#7 \u306a\u306e\u304b\uff1f - ..\u305f\u308c\u308d\u3050..\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","version":"1.0","url":"https://naga-sawa.hatenadiary.org/entry/20170730/1501404099","provider_url":"https://hatena.blog","published":"2017-07-30 17:41:39","blog_url":"https://naga-sawa.hatenadiary.org/","width":"100%","height":"190","provider_name":"Hatena Blog","description":"\u7d50\u8ad6 JCE (Java Cryptography Extension) \u306e AES/CBC/PKCS5Padding \u306e\u30d1\u30c7\u30a3\u30f3\u30b0\u306f\u3001\u5b9f\u969b\u306b\u306f PKCS#7 \u3067\u30d1\u30c7\u30a3\u30f3\u30b0\u3057\u3066\u3044\u308b\u3002 (\u5c11\u306a\u304f\u3068\u3082 Oracle Java8_141 \u74b0\u5883\u4e0b\u3067\u306f) \u7d4c\u7def Java \u3067 AES \u6697\u53f7\u5316\u3092\u6271\u3046\u6a5f\u4f1a\u304c\u3042\u308a\u3001\u30b0\u30b0\u3063\u3066\u3044\u305f\u3068\u3053\u308d AES/CBC/PKCS5Padding \u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u30b5\u30dd\u30fc\u30c8\u3067\u4f7f\u3044\u3088\u3044\u3002\u3068\u3044\u3046\u3068\u3053\u308d\u307e\u3067\u884c\u3063\u305f\u3068\u3053\u308d\u3067\u3001 \u300cAES \u3063\u3066\u30d6\u30ed\u30c3\u30af\u9577 128bit(16byte) \u3060\u304b\u3089 8byte \u307e\u3067\u3057\u304b\u30d1\u30c7\u30a3\u30f3\u30b0\u3067\u304d\u306a\u3044 PKCS#5 \u3060\u3068\u30d1\u30c7\u30a3\u30f3\u30b0\u3067\u304d\u306a\u3044\u3093\u3058\u3083\uff1f\u300d \u3068\u7591\u554f\u306b\u601d\u3063\u305f\u308f\u3051\u3067\u3059\u2026","title":" Java (JCE) \u3067 AES \u6697\u53f7\u5316\u3059\u308b\u3068\u304d\u306e PKCS#5 \u306e\u5b9f\u614b\u306f PKCS#7 \u306a\u306e\u304b\uff1f","author_url":"https://blog.hatena.ne.jp/naga_sawa/"}