{"id":3148,"date":"2021-01-11T17:55:12","date_gmt":"2021-01-11T08:55:12","guid":{"rendered":"https:\/\/ecpplus.net\/weblog\/?p=3148"},"modified":"2021-06-10T16:52:39","modified_gmt":"2021-06-10T07:52:39","slug":"zero-knowledge-cloud-storages","status":"publish","type":"post","link":"https:\/\/ecpplus.net\/weblog\/zero-knowledge-cloud-storages\/","title":{"rendered":"Zero-Knowledge \u306a\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u3057\u3070\u3089\u304f\u4f7f\u3063\u3066\u307f\u305f"},"content":{"rendered":"<h2>Zero-knowledge<\/h2>\n<p>Zero-Knowledge \u306a\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u8a66\u3057\u3066\u307f\u305f\u3002Zero-knowledge \u3068\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8(\u30b9\u30de\u30db\u3084PC)\u5074\u3067\u6697\u53f7\u5316\u3057\u3066\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u4fdd\u5b58\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3001\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u8005\u3067\u3059\u3089\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u3092\u898b\u308b\u3053\u3068\u304c\u51fa\u6765\u306a\u3044\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u9ad8\u3044\u306e\u3067\u5b89\u5fc3\u3057\u3066\u4f7f\u3046\u3053\u3068\u304c\u51fa\u6765\u308b\u3002<\/p>\n<p>Zero-knowledge \u306f\u3001 End-to-end encryption(a.k.a E2EE) \u3068\u540c\u3058\u3068\u601d\u3063\u3066\u826f\u3044\u3002\u30b5\u30fc\u30d0\u5074\u3067\u5fa9\u53f7\u304c\u4e0d\u53ef\u80fd\u3067\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3057\u304b\u30c7\u30fc\u30bf\u304c\u898b\u3089\u308c\u306a\u3044\u3088\u3046\u306a\u72b6\u614b\u304c\u62c5\u4fdd\u3055\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u610f\u5473\u3060\u3002<\/p>\n<p>\u30de\u30eb\u30c1\u30c7\u30d0\u30a4\u30b9\u3067\u9014\u4e2d\u3067\u4e00\u5207\u306e\u5fa9\u53f7\u304c\u884c\u308f\u308c\u306a\u3044\u3068\u3044\u3046\u610f\u5473\u3067 E2EE \u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001\u9375\u4ea4\u63db\u304c\u884c\u308f\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u306e\u3067\u533a\u5225\u3057\u3066\u305d\u3046\u3044\u3046\u547c\u3073\u65b9\u3057\u3066\u308b\u3093\u3060\u308d\u3046\u3068\u601d\u3046\u3002 Zero-knowledge \u3063\u3066\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u4ee5\u5916\u3067\u805e\u3044\u305f\u3053\u3068\u7121\u3044\u6c17\u304c\u3059\u308b\u3002<\/p>\n<p>\u4ed6\u306b\u3082\u3001 No knowledge \u3084 Client-side encryption \u3068\u304b\u8272\u3005\u306a\u8a00\u3044\u65b9\u304c\u3042\u308b\u304c\u3001\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u9650\u3063\u3066\u8a00\u3048\u3070\u5168\u90e8\u540c\u3058\u3068\u601d\u3063\u3066\u5927\u4e08\u592b\u3002<\/p>\n<h2>\u904b\u55b6\u4f01\u696d\u306e\u56fd\u7c4d<\/h2>\n<p>\u305a\u3063\u3068 <a target=\"_blank\" href=\"https:\/\/spideroak.com\/one\/\" rel=\"noreferrer noopener\">SpiderOak One<\/a> \u3092\u4f7f\u3063\u3066\u3044\u305f\u3051\u308c\u3069\u3001US\u4f01\u696d\u3067\u3042\u308b\u4ee5\u4e0a\u306f\u7d76\u5bfe\u5b89\u5168\u3068\u306f\u8a00\u3044\u5207\u308c\u305a(\u653f\u5e9c\u7684\u306b\u306f\u901a\u4fe1\u508d\u8074\u51fa\u6765\u306a\u3044 E2EE \u3092\u5ec3\u6b62\u3057\u305f\u3044\u3088\u3046\u306a\u306e\u3067)\u3001<a target=\"_blank\" href=\"https:\/\/ja.wikipedia.org\/wiki\/UKUSA%E5%8D%94%E5%AE%9A\" rel=\"noreferrer noopener\">\u30d5\u30a1\u30a4\u30d6\u30a2\u30a4\u30ba<\/a> \u4ee5\u5916\u306e\u56fd\u7c4d\u306e\u4f01\u696d\u304c\u3088\u308a\u5b89\u5168\u3068\u8a00\u3048\u308b\u3002\u30d5\u30a1\u30a4\u30d6\u30a2\u30a4\u30ba\u3067\u65e5\u672c\u304c6\u56fd\u76ee\u306b\u306a\u308b\u304b\u3082\u3068\u3044\u3046\u30cb\u30e5\u30fc\u30b9\u304c\u53bb\u5e74\u51fa\u3066\u3044\u305f\u304c\u3001\u5bfe\u7b49\u306a\u7acb\u5834\u3067\u52a0\u5165\u51fa\u6765\u308b\u3068\u306f\u3042\u307e\u308a\u601d\u3048\u306a\u3044\u3002\u305d\u3046\u306a\u3063\u3066\u6b32\u3057\u3044\u6c17\u6301\u3061\u306f\u3042\u308b\u304c\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30d6\u30a2\u30a4\u30ba\u5916\u306e\u30b5\u30fc\u30d3\u30b9<\/h2>\n<h3><a target=\"_blank\" href=\"https:\/\/tresorit.com\/\" rel=\"noreferrer noopener\">tresorit<\/a><\/h3>\n<ul>\n<li>\u30b9\u30a4\u30b9\u4f01\u696d<\/li>\n<li><a target=\"_blank\" href=\"\" rel=\"noreferrer noopener\">GDPR<\/a> \u306b\u6e96\u62e0<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u4e0a\u306b\u5e38\u306b\u30d5\u30a1\u30a4\u30eb\u3092\u6301\u3064\n<ul>\n<li>(\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u5bb9\u91cf\u306f\u98df\u3046\u304c\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u30a2\u30af\u30bb\u30b9\u306f\u901a\u5e38\u30d5\u30a1\u30a4\u30eb\u3068\u540c\u3058\u901f\u5ea6\u3067\u884c\u3048\u308b)<\/li>\n<\/ul>\n<\/li>\n<li>\u5168\u3066\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u6697\u53f7\u5316\u3055\u308c\u308b<\/li>\n<\/ul>\n<p>\u5e74\u6255\u3044\u306e\u5834\u5408\u306e\u6599\u91d1\u306f\u500b\u4eba\u7528\u9014\u3068\u30d3\u30b8\u30cd\u30b9\u7528\u9014\u3067\u7570\u306a\u308a\u30012021\u5e741\u670811\u65e5\u73fe\u5728<\/p>\n<ul>\n<li>\u500b\u4eba\n<ul>\n<li>5GB \u307e\u3067 \u7121\u6599<\/li>\n<li>500GB \u307e\u3067 10.42USD\/\u6708<\/li>\n<li>2,500GB \u307e\u3067 24USD\/\u6708<\/li>\n<\/ul>\n<\/li>\n<li>\u30d3\u30b8\u30cd\u30b9\n<ul>\n<li>1TB \u307e\u3067 14.50USD\/\u6708<\/li>\n<li>2TB \u307e\u3067 19.17USD\/\u6708<\/li>\n<li>\u305d\u308c\u4ee5\u4e0a 24USD\/\u6708<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n<h3><a target=\"_blank\" href=\"https:\/\/partner.pcloud.com\/r\/22059\" rel=\"noreferrer noopener\">pCloud<\/a><\/h3>\n<ul>\n<li>\u30b9\u30a4\u30b9\u4f01\u696d<\/li>\n<li><a target=\"_blank\" href=\"\" rel=\"noreferrer noopener\">GDPR<\/a> \u306b\u6e96\u62e0<\/li>\n<li>\u30b5\u30fc\u30d0\u306e\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30de\u30a6\u30f3\u30c8\u3057\u3066\u4f7f\u3046\n<ul>\n<li>(\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u3092\u98df\u308f\u306a\u3044\u304c\u3001\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u4ecb\u3059\u308b\u306e\u3067\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306b\u3088\u3063\u3066\u306f\u9045\u3044)<\/li>\n<\/ul>\n<\/li>\n<li>\u6697\u53f7\u5316\u306f\u6709\u6599\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3001\u6697\u53f7\u5316\u9818\u57df\u306e\u307f\u6697\u53f7\u5316\u3055\u308c\u308b\u3002<\/li>\n<\/ul>\n<p>\u6599\u91d1\u306f\u5e74\u6255\u3044\u3068Lifetime\u4e00\u62ec\u6255\u3044(\u30b5\u30fc\u30d3\u30b9\u7d42\u4e86\u307e\u3067\u305a\u3063\u3068\u4f7f\u3048\u308b)\u304c\u3042\u308a\u30012021\u5e741\u670811\u65e5\u73fe\u5728<\/p>\n<ul>\n<li>500 GB \u307e\u3067\n<ul>\n<li>47.88USD\/\u5e74<\/li>\n<li>175USD\/Lifetime<\/li>\n<\/ul>\n<\/li>\n<li>2TB \u307e\u3067\n<ul>\n<li>95.88USD\/\u5e74<\/li>\n<li>350USD\/Lifetime<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u304c\u57fa\u672c\u6599\u91d1\u3067\u3001\u6697\u53f7\u5316\u30aa\u30d7\u30b7\u30e7\u30f3\u306f<\/p>\n<ul>\n<li>47.88USD\/\u5e74<\/li>\n<li>125USD\/Lifetime<\/li>\n<\/ul>\n<p>\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n<h3>tresorit \u3068 pCloud \u306e\u6bd4\u8f03<\/h3>\n<p>\u5927\u304d\u306a\u9055\u3044\u306f\u30d5\u30a1\u30a4\u30eb\u30a2\u30af\u30bb\u30b9\u306e\u4ed5\u7d44\u307f\u306e\u9055\u3044\u3067\u3001\u7528\u9014\u306b\u3088\u3063\u3066\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u304c\u7570\u306a\u308b\u3002<\/p>\n<p>\u666e\u6bb5\u826f\u304f\u4f7f\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u4fdd\u5b58\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u81ea\u4f53\u306f\u30ed\u30fc\u30ab\u30eb\u306b\u5b58\u5728\u3059\u308b tresorit \u306e\u65b9\u304c\u826f\u3044\u3002\u30d5\u30a1\u30a4\u30eb\u30a2\u30af\u30bb\u30b9\u306f\u901a\u5e38\u306e\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u3068\u540c\u3058\u901f\u3055\u3067\u3001\u7279\u306b\u6c17\u306b\u3059\u308b\u3053\u3068\u306a\u304f\u4f7f\u3048\u308b\u3002<\/p>\n<p>\u5927\u304d\u306a\u30d5\u30a1\u30a4\u30eb\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u7528\u9014\u3068\u3057\u3066\u4f7f\u3044\u305f\u3044\u5834\u5408\u306f\u3001pCloud \u306e\u65b9\u304c\u826f\u3044\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30c9\u30e9\u30a4\u30d6\u3092\u30de\u30a6\u30f3\u30c8\u3057\u3066\u4f7f\u3046\u306e\u3067\u3001\u30ed\u30fc\u30ab\u30eb\u306e\u5bb9\u91cf\u3092\u5727\u8feb\u3057\u306a\u3044\u3002pCloud \u306b\u79fb\u3057\u305f\u3089\u30ed\u30fc\u30ab\u30eb\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u6d88\u305b\u3070\u3001\u30c7\u30a3\u30b9\u30af\u5bb9\u91cf\u3092\u7bc0\u7d04\u3067\u304d\u308b\u3002<\/p>\n<p>\u6599\u91d1\u3068\u3057\u3066\u306f\u3001\u307b\u3068\u3093\u3069\u306e\u30b1\u30fc\u30b9\u3067 pCloud \u306e\u65b9\u304c\u5b89\u304f\u306a\u308b\u3002\u7121\u6599 5GB \u5185\u3067\u4f7f\u3046\u306a\u3089\u3070 tresorit \u3067\u3082\u826f\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u3002<\/p>\n<p>pCloud \u3082\u7121\u6599\u3067\u8a66\u305b\u308b\u306e\u3067\u3001\u4f7f\u3063\u3066\u307f\u3066\u304b\u3089\u6c7a\u3081\u308b\u3053\u3068\u304c\u51fa\u6765\u308b\u3002<\/p>\n<h2>\u30d5\u30a1\u30a4\u30d6\u30a2\u30a4\u30ba\u5185\u306e\u30b5\u30fc\u30d3\u30b9<\/h2>\n<p>\u30d5\u30a1\u30a4\u30d6\u30a2\u30a4\u30ba\u3092\u6c17\u306b\u3057\u306a\u3044\u306a\u3089\u3001\u30b3\u30b9\u30d1\u306e\u826f\u3044\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308b\u3002 SpiderOak One \u306f6\u5e74\u304f\u3089\u3044\u4f7f\u3063\u3066\u305f\u3051\u3069\u3001\u7279\u306b\u554f\u984c\u306f\u8d77\u304d\u306a\u304b\u3063\u305f\u3002\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u5bb9\u91cf\u3088\u308a\u3082\u30b5\u30fc\u30d0\u5074\u3067\u8a08\u7b97\u3055\u308c\u3066\u305f\u5bb9\u91cf\u306e\u65b9\u304c\u591a\u304b\u3063\u305f\u3051\u308c\u3069\u3002<\/p>\n<h3><a target=\"_blank\" href=\"https:\/\/spideroak.com\/one\/\" rel=\"noreferrer noopener\">SpiderOak One<\/a><\/h3>\n<ul>\n<li>\u30a2\u30e1\u30ea\u30ab\u4f01\u696d<\/li>\n<li>150GB : 6USD\/\u6708<\/li>\n<li>400GB : 11USD\/\u6708<\/li>\n<li>2TB : 14USD\/\u6708<\/li>\n<li>5TB: 29USD\/\u6708<\/li>\n<\/ul>\n<h3><a target=\"_blank\" href=\"https:\/\/www.sync.com\/\" rel=\"noreferrer noopener\">sync.com<\/a><\/h3>\n<ul>\n<li>\u30ab\u30ca\u30c0\u4f01\u696d<\/li>\n<li>2TB : 8USD\/\u6708<\/li>\n<li>3TB : 10USD\/\u6708<\/li>\n<li>4TB : 15USD\/\u6708<\/li>\n<\/ul>\n<h3><a target=\"_blank\" href=\"https:\/\/icedrive.net\/plans\" rel=\"noreferrer noopener\">icedrive<\/a><\/h3>\n<ul>\n<li>\u30a4\u30ae\u30ea\u30b9\u4f01\u696d<\/li>\n<li>1TB : 4USD\/\u6708<\/li>\n<li>5TB : 17.99USD\/\u6708<\/li>\n<li>\u203b Lifetime \u30d7\u30e9\u30f3\u304c\u3042\u308b<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Zero-knowledge Zero-Knowledge \u306a\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u3092\u8a66\u3057\u3066\u307f\u305f\u3002Zero-knowledge \u3068\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8(\u30b9\u30de\u30db\u3084PC)\u5074\u3067\u6697\u53f7\u5316\u3057\u3066\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u306b\u4fdd\u5b58\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067 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