{"id":559,"date":"2011-01-07T02:14:45","date_gmt":"2011-01-06T17:14:45","guid":{"rendered":"http:\/\/gamegaz.jp\/blog\/?p=559"},"modified":"2011-01-10T22:14:08","modified_gmt":"2011-01-10T13:14:08","slug":"bbc%e3%81%8c%e8%a6%8b%e3%81%9fgeohot-vs-fail0verflow-%e3%80%9c-%e5%95%8f%e3%82%8f%e3%82%8c%e3%81%a6%e3%81%84%e3%82%8b%e3%81%ae%e3%81%af%e3%80%81%e3%83%a6%e3%83%bc%e3%82%b6%e3%83%bc%e8%87%aa%e8%ba%ab","status":"publish","type":"post","link":"https:\/\/gamegaz.jp\/blog\/2011\/01\/07\/559","title":{"rendered":"BBC\u304c\u898b\u305fGeohot vs. fail0verflow \u301c \u554f\u308f\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u81ea\u8eab\u306e\u30e2\u30e9\u30eb"},"content":{"rendered":"

\u30a4\u30ae\u30ea\u30b9\u306e\u516c\u5171\u653e\u9001BBC\u304c\u3001PS3\u306emetldr key\u3092\u516c\u958b\u3057\u3066\u4e00\u8e8d\u6642\u306e\u4eba\u3068\u306a\u3063\u305fGeohot(George Hotz)\u6c0f\u3068\u3001fail0verflow\u30c1\u30fc\u30e0\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u308bpytey\u6c0f(iPhone DevTeam\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3082\u3042\u308b)\u3078\u306e\u30a4\u30f3\u30bf\u30d3\u30e5\u30fc\u3092\u30d9\u30fc\u30b9\u306b\u3001PlayStation3\u30cf\u30c3\u30ad\u30f3\u30b0\u306e\u4eca\u3092\u4f1d\u3048\u3066\u3044\u307e\u3057\u305f\u3002BBC\u304c\u4f1d\u3048\u308bPS3\u30b7\u30fc\u30f3\u3002\u305d\u306e\u6839\u5e95\u306b\u6a2a\u305f\u308f\u308b\u306e\u306f”\u9055\u6cd5\u30b3\u30d4\u30fc”\u554f\u984c\u3067\u3059\u3002
\n\u3010\u60c5\u5831\u6e90: BBC News iPhone hacker publishes secret Sony PlayStation 3 key<\/a>\u3011
\n\"BBC_Geohot\"<\/p>\n


\n<\/p>\n

iPhone hacker publishes secret Sony PlayStation 3 key
\niPhone\u30cf\u30c3\u30ab\u30fc SONY PlayStation3\u306e\u79d8\u5bc6\u9375\u3092\u516c\u958b<\/font><\/font>
\nBy Jonathan Fildes<\/strong>
\nTechnology reporter, BBC News<\/font><\/p>\n

\nThe PlayStation 3’s security has been broken by hackers, potentially allowing anyone to run any software – including pirated games – on the console
\nPlayStation3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30cf\u30c3\u30ab\u30fc\u306e\u624b\u306b\u3088\u308a\u5d29\u58ca\u3002PS3\u3067\u3042\u308a\u3068\u3042\u3089\u3086\u308b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8d77\u52d5\u304c\u53ef\u80fd\u3068\u306a\u308b – \u305d\u306e\u5f71\u97ff\u306f\u9055\u6cd5\u30b3\u30d4\u30fc\u30b2\u30fc\u30e0\u306b\u53ca\u3076\u53ef\u80fd\u6027\u3082\u3002<\/font><\/strong>
\nA collective of hackers recently showed off a method that could force the system to reveal secret keys used to load software on to the machine.
\n\u3042\u308b\u30cf\u30c3\u30ab\u30fc\u96c6\u56e3\u304c\u5148\u65e5\u30b2\u30fc\u30e0\u6a5f\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8aad\u307f\u8fbc\u307f\u6642\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u79d8\u5bc6\u9375\u3092\u5f37\u5236\u7684\u306b\u660e\u3089\u304b\u306b\u3057\u3066\u3057\u307e\u3046\u4ed5\u7d44\u307f\u3092\u516c\u958b\u3057\u305f\u3002<\/font>
\nA US hacker, who gained notoriety for unlocking Apple’s iPhone, has now used a similar method to extract the PS3’s master key and publish it online.
\n\u305d\u3057\u3066\u4eca\u5ea6\u306f\u3001Apple\u306eiPhone\u3092\u30a2\u30f3\u30ed\u30c3\u30af\u3057\u305f\u3053\u3068\u3067\u60aa\u540d\u9ad8\u304d\u30a2\u30e1\u30ea\u30ab\u306e\u30cf\u30c3\u30ab\u30fc\u304c\u305d\u308c\u3068\u540c\u3058\u65b9\u6cd5\u3092\u5229\u7528\u3057PS3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b7\u30b9\u30c6\u30e0\u306e\u6838\u3068\u306a\u3063\u3066\u3044\u308b\u30de\u30b9\u30bf\u30fc\u30ad\u30fc\u3092\u63a2\u3057\u51fa\u3057\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u516c\u958b\u3057\u305f\u306e\u3060\u3002<\/font>
\nSony declined to comment on the hack.
\n\u30bd\u30cb\u30fc\u306f\u3053\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u306b\u3064\u3044\u3066\u306e\u30b3\u30e1\u30f3\u30c8\u3092\u62d2\u5426\u3057\u3066\u3044\u308b\u3002<\/font>
\n“The complete console is compromised – there is no recovery from this,” said pytey, a member of the fail0verflow group of hackers, who revealed the initial exploit at the Chaos Communication Congress in Berlin in December.
\n\u300c\u30b2\u30fc\u30e0\u6a5f\u3068\u3044\u3046\u306e\u306f\u59a5\u5354\u306e\u7523\u7269\u3060\u3002 – \u3060\u304b\u3089\u30cf\u30c3\u30ad\u30f3\u30b0\u304b\u3089\u306f\u9003\u308c\u3089\u308c\u306a\u3044\u300dfail0verflow\u3068\u3044\u3046\u30b0\u30eb\u30fc\u30d7\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u308bpytey\u6c0f\u306f\u305d\u3046\u8a71\u3057\u305f\u3002\u5f7c\u306f12\u6708\u306b\u30d9\u30eb\u30ea\u30f3\u3067\u884c\u308f\u308c\u305fChaos Communication Congress\u3067PS3\u6700\u521d\u306eexploit\u3092\u767a\u8868\u3057\u305f\u4eba\u7269\u3060\u3002<\/font>
\n“This is as bad as it gets – someone is getting into serious trouble at Sony right now.”
\n\u300c\u3053\u306e\u4e8b\u614b\u306f\u9177\u3044\u8a71\u3060 – \u30bd\u30cb\u30fc\u306b\u53d6\u3063\u3066\u306f\u6df1\u523b\u306a\u554f\u984c\u3060\u308d\u3046\u300d<\/font>
\nThe group, which has previously hacked Nintendo’s Wii and says it is vehemently against games piracy, said that it had developed the hack so that it could install other operating systems and community – written software – known as homebrew – on the powerful machine.
\n\u904e\u53bb\u306b\u306fNintendo Wii\u3082\u30cf\u30c3\u30ad\u30f3\u30b0\u3057\u305f\u5b9f\u7e3e\u3092\u6301\u3064\u305d\u306e\u30b0\u30eb\u30fc\u30d7\u306f\u30b2\u30fc\u30e0\u306e\u9055\u6cd5\u30b3\u30d4\u30fc\u306b\u95a2\u3057\u3066\u306f\u6fc0\u3057\u304f\u53cd\u5bfe\u3057\u3066\u3044\u308b\u3002\u5f7c\u3089\u306ePS3\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u958b\u767a\u306e\u76ee\u7684\u306fLinux\u306e\u3088\u3046\u306a\u4ed6\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3092\u30d1\u30ef\u30d5\u30eb\u306a\u30de\u30b7\u30f3\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3068\u3001Homebrew\u3068\u3057\u3066\u77e5\u3089\u308c\u308b\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u306b\u3088\u308b\u81ea\u4f5c\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3060\u3068\u3057\u3066\u3044\u308b\u3002<\/font>
\n“The details we provided and information and techniques we disclosed would have been enough to install Linux,” he said. “We have no interest in piracy.”
\nLinux\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3060\u3051\u306a\u3089\u6211\u3005\u304c\u8aac\u660e\u3057\u305f\u5185\u5bb9\u306e\u8a73\u7d30\u3084\u767a\u8868\u3057\u305f\u60c5\u5831\u3084\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3067\u5341\u5206\u3060\u300d\u5f7c\u306f\u305d\u3046\u8aac\u660e\u3057\u305f\u3002\u300c\u3060\u304b\u3089\u9055\u6cd5\u30b3\u30d4\u30fc\u306b\u306f\u5168\u304f\u8208\u5473\u304c\u306a\u3044\u3002\u300d<\/font>
\nFollowing the presentation, US hacker George Hotz, who has previously hacked parts of the console, used a similar technique to extract the master key. He has now published it on his blog.
\n\u5f7c\u3089\u306e\u8aac\u660e\u306b\u3088\u308b\u3068\u3001\u4ee5\u524dPS3\u306e\u4e00\u90e8\u3092\u30cf\u30c3\u30ad\u30f3\u30b0\u3057\u305f\u30a2\u30e1\u30ea\u30ab\u4eba\u30cf\u30c3\u30ab\u30fcGeorge Hotz\u6c0f\u306f\u5f7c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3068\u540c\u3058\u6280\u8853\u3092\u5229\u7528\u3057\u3066\u30de\u30b9\u30bf\u30fc\u30ad\u30fc\u3092\u624b\u306b\u5165\u308c\u305f\u3088\u3046\u3060\u3002\u305d\u3057\u3066George Hotz\u6c0f\u6c0f\u306f\u81ea\u8eab\u306e\u30d6\u30ed\u30b0\u3067\u305d\u308c\u3092\u516c\u958b\u3057\u305f\u3002<\/font>
\nThis formerly secret number is used to “sign” all games and software that run on the system, to authenticate that it is genuine and approved by Sony.
\n\u5148\u306b\u8aac\u660e\u3057\u305f\u79d8\u5bc6\u306e\u9375\u3068\u3044\u3046\u306e\u306fPS3\u306e\u3059\u3079\u3066\u306e\u30b2\u30fc\u30e0\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u8d77\u52d5\u3055\u305b\u308b\u969b\u306e”\u7f72\u540d”\u3067\u3001\u305d\u308c\u304c\u30bd\u30cb\u30fc\u306b\u3088\u308a\u6b63\u898f\u306b\u8a8d\u5b9a\u3055\u308c\u305f\u516c\u5f0f\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u304b\u3069\u3046\u304b\u3092\u8a8d\u8a3c\u3059\u308b\u305f\u3081\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u3002<\/font>
\nHowever, once the key is known it can be used to sign any software – including unofficial software and games.
\n\u3057\u304b\u3057\u3001\u3072\u3068\u305f\u3073\u305d\u306e\u30ad\u30fc\u304c\u77e5\u308c\u6e21\u3063\u3066\u3057\u307e\u3046\u3068\u3001\u975e\u516c\u5f0f\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3084\u30b2\u30fc\u30e0\u3092\u542b\u3081\u3001\u3069\u3093\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u3067\u3082\u7f72\u540d\u304c\u3067\u304d\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308b\u3002<\/font>
\n“I hate that it enables piracy,” said Mr Hotz. “The publication of the key is more academic than anything else.”
\n\u300c\u9055\u6cd5\u30b3\u30d4\u30fc\u3092\u4f7f\u3048\u308b\u3088\u3046\u306b\u3057\u3066\u3057\u307e\u3046\u306e\u306f\u5acc\u3060\u3002\u300dHotz\u306f\u3053\u3046\u7d9a\u3051\u305f\u3002\u300c\u30ad\u30fc\u3092\u516c\u958b\u3059\u308b\u3053\u3068\u306f\u4ed6\u306e\u4f55\u3088\u308a\u3082\u5b66\u8853\u7684\u306b\u8a55\u4fa1\u3067\u304d\u308b\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u300d<\/font>
\nThe number also works for Sony’s handheld console the PlayStation Portable, said Mr Hotz.
\n\u300c\u305d\u3057\u3066\u30ad\u30fc\u306e\u6570\u5b57\u306f\u30bd\u30cb\u30fc\u306e\u643a\u5e2f\u30b2\u30fc\u30e0\u6a5fPlayStation Portable\u3067\u3082\u540c\u3058\u3088\u3046\u306b\u4f7f\u3048\u308b\u3093\u3060\u300d<\/font>
\nDevelopers have already started releasing tools to develop new software for the PS3 using the hacks.
\n\u958b\u767a\u8005\u9054\u306f\u65e2\u306b\u3053\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u3092\u5229\u7528\u3057\u3066\u65b0\u305f\u306aPS3\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u958b\u767a\u3057\u3001\u30c4\u30fc\u30eb\u3092\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u3079\u304f\u52d5\u304d\u59cb\u3081\u3066\u3044\u308b\u3002<\/font><\/p>\n

‘Valid target’
\n‘\u683c\u597d\u306e\u990c\u98df’<\/font><\/strong><\/font>
\nThe PS3 – once regarded as the most secure of the game’s consoles, and the only one not to have been permanently cracked – has in the last 12 months come under increasingly scrutiny from hackers.
\nPS3 – \u304b\u3064\u3066\u306f\u6700\u3082\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u9ad8\u3044\u30b2\u30fc\u30e0\u6a5f\u3068\u8a55\u4fa1\u3055\u308c\u3001\u6c38\u9060\u306b\u30af\u30e9\u30c3\u30af\u3055\u308c\u308b\u3053\u3068\u306e\u306a\u3044\u552f\u4e00\u306e\u5b58\u5728\u3068\u307e\u3067\u8a00\u308f\u308c\u305f – \u306f\u3053\u306e12\u30f6\u6708\u306e\u9593\u30cf\u30c3\u30ab\u30fc\u9054\u306e\u8996\u7dda\u306b\u3055\u3089\u3055\u308c\u7d9a\u3051\u305f\u3002<\/font>
\nIn January 2010, Mr Hotz claimed to have cracked the console.
\n2010\u5e741\u6708\u3001Hotz\u6c0f\u306fPS3\u3092\u30af\u30e9\u30c3\u30af\u3057\u305f\u3053\u3068\u3092\u767a\u8868\u3057\u305f\u3002<\/font>
\nFollowing his initial announcement, Sony released an update disabling a function, called OtherOS, that allowed gamers to install a version of Linux on their machines, thought to have been exploited by Mr Hotz.
\n\u305d\u306e\u767a\u8868\u306e\u3042\u3068\u3001\u30bd\u30cb\u30fc\u306fOtherOS\u6a5f\u80fd\u3068\u3044\u3046Linux\u3092PS3\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3067\u304d\u308b\u6a5f\u80fd\u3092\u524a\u9664\u3057\u3066\u3057\u307e\u3046\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u305f\u3002Hotz\u6c0f\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u306e\u5f71\u97ff\u3060\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u3002<\/font>
\nMany saw it as a pre-emptive strike to guard against games piracy.
\n\u30c0\u591a\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u305d\u308c\u304c\u30b2\u30fc\u30e0\u306e\u9055\u6cd5\u30b3\u30d4\u30fc\u5bfe\u7b56\u3068\u3057\u3066\u306e\u30bd\u30cb\u30fc\u306e\u5148\u5236\u653b\u6483\u3060\u3068\u898b\u3066\u3044\u305f\u3002<\/font>
\nMr Hotz never released the exploit and publicly said that he had stopped work on the console.
\n\u3057\u304b\u3057Hotz\u6c0f\u304b\u3089\u7d50\u5c40exploit\u306f\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u308b\u3053\u3068\u7121\u304f\u7d42\u308f\u3063\u305f\u305f\u3081\u3001\u8ab0\u3082\u304cHotz\u6c0f\u306fPS3\u306e\u958b\u767a\u304b\u3089\u964d\u308a\u305f\u306e\u3060\u3068\u601d\u3063\u3066\u3044\u305f\u3002<\/font>
\nBut Sony’s removal of OtherOS prompted other hackers to begin to look at the system more closely.
\n\u3057\u304b\u3057\u3001\u30bd\u30cb\u30fc\u306e”OtherOS”\u6a5f\u80fd\u524a\u9664\u306f\u7d50\u679c\u7684\u306b\u4ed6\u306e\u30cf\u30c3\u30ab\u30fc\u9054\u306e\u6ce8\u76ee\u3092\u96c6\u3081\u308b\u7d50\u679c\u3068\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3002<\/font>
\n“It became a valid target,” pytey told BBC News. “That was the motivation for us to hack it.”
\n\u300c\u3060\u304b\u3089\u683c\u597d\u306e\u990c\u98df\u3067\u3059\u3088\u3002\u300dpytey\u6c0f\u306fBBC News\u306e\u53d6\u6750\u306b\u5bfe\u3057\u305d\u3046\u7b54\u3048\u305f\u3002\u300c\u305d\u308c\u304c\u30cf\u30c3\u30ad\u30f3\u30b0\u3057\u305f\u304b\u3063\u305f\u52d5\u6a5f\u3067\u3059\u3002\u300d
\n<\/font>
\nHe said the team had spent “months” trying to find their way into the system.
\npytey\u6c0f\u306b\u3088\u308b\u3068\u3001\u5f7c\u306e\u30c1\u30fc\u30e0\u306f\u6570\u30f6\u6708\u3092\u8981\u3057\u3066\u30b7\u30b9\u30c6\u30e0\u4e0a\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u65b9\u6cd5\u3092\u7de8\u307f\u51fa\u3057\u305f\u306e\u3060\u3068\u3044\u3046\u3002<\/font>
\n“It was not trivial to do this,” he said.
\n\u300c\u6c7a\u3057\u3066\u4fa1\u5024\u304c\u306a\u3044\u8a71\u3058\u3083\u306a\u3044\u3057\u306d\u3002\u300d<\/font>
\nIn the end, the flaw that allowed them to crack the system was a basic cryptographic error that allowed them to compute the private key, held by Sony, he said.
\n\u7d50\u5c40\u30b7\u30b9\u30c6\u30e0\u3092\u30af\u30e9\u30c3\u30af\u3059\u308b\u8106\u5f31\u6027\u306f\u57fa\u672c\u7684\u306a\u6697\u53f7\u5316\u65b9\u6cd5\u306e\u904e\u3061\u306b\u3042\u308a\u3001\u672c\u6765\u30bd\u30cb\u30fc\u3057\u304b\u77e5\u308a\u5f97\u306a\u304b\u3063\u305f\u79d8\u5bc6\u9375\u306e\u7b97\u51fa\u3092\u8a31\u3057\u3066\u3057\u307e\u3046\u7d50\u679c\u3068\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3002<\/font>
\n“Sony uses a private key, usually stored in a vault at the company’s HQ, to mark firmware as valid and unmodified, and the PS3 only needs a public key to verify that the signature came from Sony.
\n\u300c\u30bd\u30cb\u30fc\u304c\u4f7f\u3063\u3066\u3044\u308b\u79d8\u5bc6\u9375\u306f\u901a\u5e38\u306f\u793e\u5185\u672c\u90e8\u306e\u91d1\u5eab\u306b\u4fdd\u7ba1\u3057\u3066\u3042\u308b\u3088\u3046\u306a\u3082\u306e\u3067\u3001\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306b\u6b63\u898f\u54c1\u3067\u3042\u308b\u8a3c\u3092\u53d6\u308a\u4ed8\u3051\u6539\u9020\u3067\u304d\u306a\u3044\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u308b\u3093\u3060\u3002\u305d\u3057\u3066PS3\u306f\u516c\u958b\u9375\u3060\u3051\u3067\u7f72\u540d\u30bd\u30cb\u30fc\u306b\u3088\u308b\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u308b\u308f\u3051\u3002\u300d<\/font>
\n“Applied correctly, it would take billions of years to derive the private key from the public key, or to make a signature without knowing the private key, even when you have all the computational power in the world at your disposal.”
\n\u300c\u672c\u6765\u306a\u3089\u3001\u516c\u958b\u9375\u304b\u3089\u8a08\u7b97\u3067\u79d8\u5bc6\u9375\u3092\u5f15\u304d\u51fa\u305d\u3046\u3068\u3059\u308b\u306810\u5104\u5e74\u304b\u304b\u308b\u3093\u3060\u3002\u3064\u307e\u308a\u79d8\u5bc6\u9375\u304c\u5206\u304b\u3089\u306a\u3044\u72b6\u614b\u3067\u7f72\u540d\u3092\u4f5c\u308d\u3046\u3068\u601d\u3046\u3068\u4e16\u754c\u4e2d\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u3092\u4f7f\u3063\u305f\u3068\u3057\u3066\u3082\u4e8b\u5b9f\u4e0a\u4e0d\u53ef\u80fd\u3060\u3068\u3044\u3046\u3053\u3068\u3002\u300d<\/font>
\nBut the team found that Sony had made a “critical mistake” in how it implemented the security.
\n\u3057\u304b\u3057\u6211\u3005\u30c1\u30fc\u30e0\u306f\u30bd\u30cb\u30fc\u304c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a”\u81f4\u547d\u7684\u306a\u8aa4\u308a”\u3092\u72af\u3057\u3066\u3057\u307e\u3063\u305f\u3002<\/font>
\n“The signing recipe requires that a random number be used as part of the calculation, with the caveat that that number must be truly random and not predictable in any way,” the team said.
\n\u300c\u7f72\u540d\u306b\u306f\u8a08\u7b97\u6642\u306b\u30e9\u30f3\u30c0\u30e0\u306a\u6570\u5b57\u3092\u5165\u308c\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002\u5b8c\u5168\u306a\u30e9\u30f3\u30c0\u30e0\u3067\u3069\u3046\u3084\u3063\u3066\u3082\u4e88\u6e2c\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u306f\u305d\u3046\u3044\u3063\u305f\u3053\u3068\u304c\u5fc5\u8981\u3067\u3057\u3087\u3046\u3002\u300d\u3068\u3001\u30cf\u30c3\u30ad\u30f3\u30b0\u30c1\u30fc\u30e0\u306f\u8aac\u660e\u3057\u3066\u3044\u308b\u3002<\/font>
\n“However, Sony wrote their own signing software, which used a constant number for each signature.”
\n\u300c\u3057\u304b\u3057\u3001\u30bd\u30cb\u30fc\u306f\u7f72\u540d\u3059\u3079\u3066\u306b\u5b9a\u6570\u3092\u4f7f\u3046\u3088\u3046\u306a\u7f72\u540d\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u4f5c\u3063\u3066\u3057\u307e\u3063\u305f\u3002\u300d<\/font>
\nThis allowed the team to use “simple algebra” to uncover Sony’s secret key, without access to it.
\n\u3053\u306e\u3053\u3068\u304c\u30cf\u30c3\u30ad\u30f3\u30b0\u30c1\u30fc\u30e0\u306b”\u5358\u7d14\u306a\u6570\u5b66”\u3067\u30bd\u30cb\u30fc\u304c\u6301\u3064\u79d8\u5bc6\u9375\u3092\u660e\u304b\u3057\u3066\u3057\u307e\u3046\u7d50\u679c\u3068\u306a\u3063\u3066\u3057\u307e\u3063\u305f\u3002\u30bd\u30cb\u30fc\u304b\u3089\u306e\u6d41\u51fa\u3068\u3044\u3063\u305f\u3053\u3068\u3082\u306a\u304f\u3001\u3060\u3002<\/font>
\n“This is supposed to be the most secret of secret of secrets – it’s the Crown jewels,” said pytey.
\n\u300c\u591a\u5206\u3053\u308c\u306f\u79d8\u5bc6\u4e2d\u306e\u79d8\u5bc6\u306e\u3055\u3089\u306b\u6975\u79d8\u4e8b\u9805\u3060\u3063\u305f\u3060\u308d\u3046\u306d\u3002\u81f3\u9ad8\u306e\u304a\u5b9d\u3068\u3044\u3046\u3068\u3053\u308d\u304b\u306a\u3002\u300dpytey\u6c0f\u306f\u305d\u3046\u8a00\u3063\u305f\u3002<\/font>
\nThe team decided to publish its method but not the keys.
\n\u30cf\u30c3\u30ad\u30f3\u30b0\u30c1\u30fc\u30e0\u306f\u305d\u306e\u65b9\u6cd5\u3053\u305d\u516c\u958b\u3057\u305f\u304c\u3001\u305d\u308c\u306f\u79d8\u5bc6\u9375\u81ea\u4f53\u3067\u306f\u306a\u304b\u3063\u305f\u3002<\/font>
\nAfter the team revealed their hack, Mr Hotz said that he was prompted to renew his work on the system.
\n\u305d\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u65b9\u6cd5\u306e\u516c\u958b\u3001Hotz\u6c0f\u306b\u3088\u308b\u3068\u5f7c\u304cPS3\u306b\u518d\u3073\u624b\u3092\u67d3\u3081\u308b\u3053\u3068\u3068\u306a\u3063\u305f\u304d\u3063\u304b\u3051\u3060\u3063\u305f\u3068\u8a00\u3046\u3002<\/font>
\n“What fun is a race if no-one else is running,” he said. “fail0verflow did great work – they took it up a level.”
\n\u300c\u4ed6\u306b\u8ab0\u3082\u53c2\u52a0\u3057\u3066\u3044\u306a\u3044\u30ec\u30fc\u30b9\u307b\u3069\u697d\u3057\u3044\u3082\u306e\u306f\u306a\u3044\u3088\u3002\u300dHotz\u6c0f\u306f\u7d9a\u3051\u305f\u3002\u300cfail0verflow\u306f\u3044\u3044\u4ed5\u4e8b\u3057\u305f\u3088\u3002\u30ec\u30d9\u30eb\u3092\u4e0a\u3052\u305f\u3093\u3060\u304b\u3089\u3002\u300d<\/font>
\nUsing a similar technique he was able to extract the entire master key for the system, which he subsequently publish online along with a demonstration of it in action.
\nfail0verflow\u30c1\u30fc\u30e0\u3068\u540c\u3058\u65b9\u6cd5\u3092\u4f7f\u3063\u3066\u3001Hotz\u6c0f\u306fPS3\u30b7\u30b9\u30c6\u30e0\u306e\u5b8c\u5168\u306a\u30de\u30b9\u30bf\u30fc\u30ad\u30fc\u3092\u624b\u306b\u5165\u308c\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u305f\u3002\u305d\u306e\u5f8c\u30c7\u30e2\u30f3\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u30d7\u30ed\u30b0\u30e9\u30e0\u3068\u5171\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u516c\u958b\u3059\u308b\u3053\u3068\u3068\u306a\u308b\u3002<\/font>
\nHowever, he has not released the method he used to extract the key.
\n\u3057\u304b\u3057\u3001Hotz\u6c0f\u306f\u30ad\u30fc\u3092\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u767a\u898b\u3057\u305f\u304b\u306b\u3064\u3044\u3066\u306f\u516c\u958b\u3057\u3066\u3044\u306a\u3044\u3002<\/font>
\n“There is no reason to,” he said.
\n\u300c\u305d\u308c\u3092\u3059\u308b\u7406\u7531\u304c\u7121\u3044\u304b\u3089\u3067\u3059\u3088\u3002\u300dHotz\u6c0f\u306f\u305d\u3046\u8aac\u660e\u3057\u305f\u3002<\/font>
\nHowever, he said that he may release a piece of software that will allow people to easily sign their own pieces of software and homemade games – known as homebrew – on to the console.
\n\u3057\u304b\u3057\u3001Hotz\u6c0f\u306fHomebrew\u3068\u8a00\u308f\u308c\u308b\u81ea\u4f5c\u30b2\u30fc\u30e0\u3084\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3078\u8ab0\u3067\u3082\u7c21\u5358\u306b\u7f72\u540d\u3067\u304d\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u3066\u3044\u304f\u3088\u3046\u3060\u3002<\/font>
\n“I have a program running but am thinking of a good way to release it,” he said.
\n\u300c\u4f7f\u3048\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3082\u3046\u5b8c\u6210\u3057\u3066\u3044\u308b\u3002\u3060\u3051\u3069\u30ea\u30ea\u30fc\u30b9\u3059\u308b\u3044\u3044\u65b9\u6cd5\u3092\u8003\u3048\u3066\u3044\u308b\u3068\u3053\u308d\u306a\u3093\u3060\u3002\u300d<\/font>
\nLike fail0verflow, he said that he does not condone games piracy.
\nfail0verflow\u30c1\u30fc\u30e0\u540c\u69d8\u3001Hotz\u6c0f\u3082\u9055\u6cd5\u30b3\u30d4\u30fc\u306b\u76ee\u3092\u3064\u3080\u308b\u3064\u3082\u308a\u306f\u7121\u3044\u3068\u3057\u3066\u3044\u308b\u3002<\/font>
\n“I do not want it to be able to sign official Sony programs. I’d like it just to be able to sign homebrew.”
\n\u300c\u30bd\u30cb\u30fc\u306e\u6b63\u898f\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u7f72\u540d\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3064\u3082\u308a\u306f\u306a\u3044\u3093\u3060\u3002Homebrew\u306b\u3060\u3051\u7f72\u540d\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u308b\u3002\u300d<\/font>
\nfail0verflow said it “disagrees” with Mr Hotz’s decision to release the key, saying that it expects them “to make piracy easier without accomplishing intrinsically useful”.
\nfail0verflow\u30c1\u30fc\u30e0\u306f\u30ad\u30fc\u3092\u516c\u958b\u3057\u305fHotz\u6c0f\u306e\u3053\u3068\u3092\u53d7\u3051\u5165\u308c\u96e3\u3044\u3068\u8a71\u3057\u3066\u3044\u308b\u3002\u30ad\u30fc\u306e\u516c\u958b\u306f\u5b9f\u969b\u306b\u4f7f\u3048\u308b\u3088\u3046\u306b\u3059\u308b\u52aa\u529b\u306a\u3069\u306a\u3057\u306b\u3044\u3068\u3082\u7c21\u5358\u306b\u9055\u6cd5\u30b3\u30d4\u30fc\u8d77\u52d5\u3092\u8a31\u3057\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u306e\u304c\u305d\u306e\u7406\u7531\u3060\u3002<\/font><\/p>\n

Legal worry
\n\u6cd5\u7684\u306a\u4e0d\u5b89\u6750\u6599<\/font><\/strong><\/font>
\nSony takes a dim view of people hacking its system.
\n\u30bd\u30cb\u30fc\u306f\u30b7\u30b9\u30c6\u30e0\u3092\u30af\u30e9\u30c3\u30af\u3057\u305f\u30cf\u30c3\u30ab\u30fc\u306b\u5bfe\u3057\u3066\u660e\u78ba\u306a\u614b\u5ea6\u3092\u793a\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/font>
\nLast year, a team released a USB dongle called PSjailbreak that contained software that allowed gamers to play homemade and pirated games on the PlayStation 3.
\n\u6628\u5e74\u3001\u3042\u308b\u30c1\u30fc\u30e0\u304c\u81ea\u4f5c\u30b2\u30fc\u30e0\u3084\u9055\u6cd5\u30b3\u30d4\u30fc\u30b2\u30fc\u30e0\u306e\u30d7\u30ec\u30a4\u3092\u53ef\u80fd\u306b\u3057\u3066\u3057\u307e\u3046\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u542b\u3093\u3060PS Jailbreak\u3068\u3044\u3046USB\u30c9\u30f3\u30b0\u30eb\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/font>
\nSony updated its consoles to block the software and took legal action against distributors in many countries.
\n\u30bd\u30cb\u30fc\u306f\u672c\u4f53\u3092\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u305d\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u30d6\u30ed\u30c3\u30af\u3057\u3001\u591a\u56fd\u306b\u6e21\u308bPS Jailbreak\u8ca9\u58f2\u5e97\u306b\u5bfe\u3057\u6cd5\u7684\u63aa\u7f6e\u306b\u51fa\u307e\u3057\u305f\u3002<\/font>
\nHowever, according to pytey, it may not be so easy to fix the problem this time.
\n\u3057\u304b\u3057\u3001pytey\u6c0f\u306f\u4eca\u56de\u306b\u95a2\u3057\u3066\u306f\u5bfe\u7b56\u304c\u7c21\u5358\u3067\u306f\u306a\u3044\u3060\u308d\u3046\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/font>
\n“The only way to fix this is to issue new hardware,” he said. “Sony will have to accept this.”
\npytey\u6c0f\u306e\u8aac\u660e\u306f\u3053\u3046\u3060\u3002\u300c\u5bfe\u7b56\u3067\u304d\u308b\u552f\u4e00\u306e\u624b\u6bb5\u306f\u65b0\u578b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3092\u767a\u58f2\u3059\u308b\u3053\u3068\u3057\u304b\u306a\u3044\u3002\u30bd\u30cb\u30fc\u306f\u53d7\u3051\u5165\u308c\u3056\u308b\u3092\u5f97\u306a\u3044\u3002\u300d<\/font>
\nHe said that he thought his group was on safe legal ground with its work.
\npytey\u6c0f\u306b\u3088\u308b\u3068\u3001\u5f7c\u306e\u30b0\u30eb\u30fc\u30d7\u306f\u4eca\u56de\u306e\u30cf\u30c3\u30ad\u30f3\u30b0\u306b\u95a2\u3057\u3066\u9055\u6cd5\u6027\u3092\u554f\u308f\u308c\u308b\u3053\u3068\u306f\u7121\u3044\u3068\u8003\u3048\u3066\u3044\u308b\u3088\u3046\u3060\u3002<\/font>
\n“I haven’t stolen anything,” he said. “It’s my own hardware, I can run whatever I like on it.
\n\u300c\u4e00\u5207\u4f55\u3082\u76d7\u3093\u3067\u3044\u306a\u3044\u3057\u306d\u3002\u81ea\u5206\u3067\u8cb7\u3063\u305f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u3067\u4f55\u3092\u3057\u3088\u3046\u304c\u554f\u984c\u306b\u306a\u308b\u3053\u3068\u306f\u306a\u3044\u3088\u3002\u300d<\/font>
\nBut Mr Hotz was more cautious.
\n\u3057\u304b\u3057\u3001Hotz\u6c0f\u306f\u3088\u308a\u614e\u91cd\u306a\u3088\u3046\u3060\u3002<\/font>
\n“I’m scared of being hit with a lawsuit,” he admitted
\n\u300c\u6cd5\u7684\u63aa\u7f6e\u3092\u3068\u3089\u308c\u3066\u8a34\u3048\u3089\u308c\u308b\u306e\u304c\u5fc3\u914d\u3060\u3088\u3002\u300d<\/font>\n<\/p><\/blockquote>\n

\u79d8\u5bc6\u9375\u306e\u516c\u958b\u304c\u9055\u6cd5\u30b3\u30d4\u30fc\u30b2\u30fc\u30e0\u306e\u52a9\u9577\u306b\u7e4b\u304c\u308b\u304b\u5426\u304b\u3001\u3053\u308c\u304cGeohot\u6c0f\u3068fail0verflow\u6c0f\u306e\u4e3b\u5f35\u306e\u5bfe\u7acb\u70b9\u3067\u3059\u3002
\nfail0verflow\u30c1\u30fc\u30e0\u306f\u305d\u306e\u30e1\u30f3\u30d0\u30fc\u304cWii\u306e\u30cf\u30c3\u30ab\u30fc\u3068\u3057\u3066\u77e5\u3089\u308c\u308bTeam Twiizers\u306e\u30e1\u30f3\u30d0\u30fc\u3068\u91cd\u8907\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u5f7c\u3089\u306f\u9055\u6cd5\u30b3\u30d4\u30fc\u554f\u984c\u3092\u6392\u9664\u3059\u3079\u304f\u6d3b\u52d5\u3057Homebrew\u3078\u306e\u7406\u89e3\u3092\u6c42\u3081\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305aWii\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u5ea6\u306b\u4efb\u5929\u5802\u304b\u3089\u76ee\u306e\u6575\u306b\u3055\u308cWii\u306eHomebrew\u30ed\u30fc\u30c0\u30fc\u3067\u3042\u308b”Homebrew Channel”\u3092\u3053\u3068\u3054\u3068\u304f\u5f37\u5236\u524a\u9664\u3055\u308c\u308b\u7fbd\u76ee\u306b\u3042\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u305d\u3046\u3044\u3063\u305f\u4e8b\u5b9f\u304c\u9055\u6cd5\u30b3\u30d4\u30fc\u52a9\u9577\u306b\u7e4b\u304c\u308a\u304b\u306d\u306a\u3044\u79d8\u5bc6\u9375\u516c\u958b\u306b\u81f3\u3063\u305fGeohot\u6c0f\u3078\u306e\u975e\u96e3\u306b\u7e4b\u304c\u3063\u3066\u3044\u308b\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002
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\u30e6\u30fc\u30b6\u30fc\u306e\u30e2\u30e9\u30eb\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30a4\u30ae\u30ea\u30b9\u306e\u516c\u5171\u653e\u9001BBC\u304c\u3001Geohot\u6c0f\u3068\u3001fail0verflow\u30c1\u30fc\u30e0\u306e\u30e1\u30f3\u30d0\u30fc\u3067\u3042\u308bpytey\u6c0f\u3078\u306e\u30a4\u30f3\u30bf\u30d3\u30e5\u30fc\u3092\u884c\u3044\u3001PS3\u30cf\u30c3\u30af\u30b7\u30fc\u30f3\u306e\u4eca\u3092\u8003\u5bdf\u3057\u3044\u3066\u3044\u307e\u3057\u305f\u3002\u300cBBC\u304c\u898b\u305fGeohot vs. fail0verflow \u301c \u554f\u308f\u308c\u3066\u3044\u308b\u306e\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u81ea\u8eab\u306e\u30e2\u30e9\u30eb\u300d\u306e\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[37,143,61,17,149],"class_list":["post-559","post","type-post","status-publish","format-standard","hentry","category-playstation3-hack","tag-exploit","tag-fail0verflow","tag-geohot","tag-ps3","tag-pytey"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/posts\/559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/comments?post=559"}],"version-history":[{"count":17,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/posts\/559\/revisions"}],"predecessor-version":[{"id":576,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/posts\/559\/revisions\/576"}],"wp:attachment":[{"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/media?parent=559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/categories?post=559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gamegaz.jp\/blog\/wp-json\/wp\/v2\/tags?post=559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}