| 翻訳と辞書 |
| Bullrun (decryption program) ： ウィキペディア英語版 |
Bullrun (decryption program)
Bullrun (stylized BULLRUN) is a clandestine, highly classified decryption program run by the United States National Security Agency (NSA). The British signals intelligence agency Government Communications Headquarters (GCHQ) has a similar program codenamed Edgehill. According to the BULLRUN classification guide published by The Guardian, the program uses multiple sources including (Computer Network Exploitation ), interdiction, industry relationships, collaboration with other Intelligence Community entities, and advanced mathematical techniques.
Information about the program's existence was leaked in 2013 by Edward Snowden. Although Snowden's documents do not contain technical information on exact cryptanalytic capabilities because Snowden did not have clearance access to such information, they do contain a 2010 GCHQ presentation which claims that "vast amounts of encrypted Internet data which have up till now been discarded are now exploitable".〔 A number of technical details regarding the program found in Snowden's documents were additionally censored by the press at the behest of US intelligence officials. Out of all the programs that have been leaked by Edward Snowden, the Bullrun Decryption Program is by far the most expensive. Snowden claims that since 2011, expenses devoted to Bullrun amount to $800 million.The leaked documents reveal that Bullrun seeks to "defeat the encryption used in specific network communication technologies."〔(【引用サイトリンク】url=http://www.ibtimes.com/edward-snowden-reveals-secret-decryption-programs-10-things-you-need-know-about-bullrun-edgehill )〕
==Naming and access==
According to the NSA's BULLRUN Classification Guide, which was published by ''The Guardian'', BULLRUN is not a Sensitive Compartmented Information (SCI) control system or compartment, but the codeword has to be shown in the classification line, after all other classification and dissemination markings. Furthermore, any details about specific cryptographic successes were recommend to be additionally restricted (besides being marked Top Secret//SI) with Exceptionally Controlled Information labels; a non-exclusive list of possible BULLRUN ECI labels was given as: APERIODIC, AMBULANT, AUNTIE, PAINTEDEAGLE, PAWLEYS, PITCHFORD, PENDLETON, PICARESQUE, and PIEDMONT without any details as to what these labels mean.〔〔
Access to the program is limited to a group of top personnel at the Five Eyes (FVEY), the NSA and the signals intelligence agencies of the United Kingdom (GCHQ), Canada (CSE), Australia (ASD), and New Zealand (GCSB). Signals that cannot be decrypted with current technology may be retained indefinitely while the agencies continue to attempt to decrypt them.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Bullrun (decryption program)」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|