JP5403771B2 - ファームウェアに安全なアップデートを提供するシステム及び方法 - Google Patents
ファームウェアに安全なアップデートを提供するシステム及び方法 Download PDFInfo
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- JP5403771B2 JP5403771B2 JP2012182646A JP2012182646A JP5403771B2 JP 5403771 B2 JP5403771 B2 JP 5403771B2 JP 2012182646 A JP2012182646 A JP 2012182646A JP 2012182646 A JP2012182646 A JP 2012182646A JP 5403771 B2 JP5403771 B2 JP 5403771B2
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- 238000000034 method Methods 0.000 title claims description 89
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- 241001441724 Tetraodontidae Species 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/65—Updates
- G06F8/66—Updates of program code stored in read-only memory [ROM]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/14—Protection against unauthorised use of memory or access to memory
- G06F12/1408—Protection against unauthorised use of memory or access to memory by using cryptography
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
- G06F21/572—Secure firmware programming, e.g. of basic input output system [BIOS]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/50—Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
- G06F21/57—Certifying or maintaining trusted computer platforms, e.g. secure boots or power-downs, version controls, system software checks, secure updates or assessing vulnerabilities
- G06F21/575—Secure boot
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- Engineering & Computer Science (AREA)
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- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Stored Programmes (AREA)
Description
関連出願
発明の概要
Claims (10)
- 計算デバイスのファームウェアを安全にアップデートするためのシステムであって、
計算デバイスであって、
ファームウェア実行の最中の、アップデートした仮想読み出し専用メモリ(ROM)モジュールの妥当性の検証に使用される解読プロセスを含むアップデート妥当性検証手続きと、
前記アップデート妥当性検証手続きへの参照、及び複数の仮想ROMモジュール各々のための参照を含むROMファームウェア・イメージであって、前記複数の仮想ROMモジュールは前記ROMファームウェア・イメージのビルドプロセス中に作成され、各参照は、関連する仮想ROMモジュール用のバージョン識別子、メッセージダイジェスト、独自の識別子、及び前記アップデート妥当性検証手続きを識別するバリデータ識別子を含み、前記アップデート妥当性検証手続きは、プリブートの最中に前記アップデートされた仮想ROMモジュールの信頼性を確認するために用いられ、前記アップデート妥当性検証手続きは、前記複数の仮想ROMモジュールの1つへの前記ROMファームウェア・イメージに含まれる参照をアップデートして、前記アップデートされた仮想ROMモジュールの妥当性検証に続いて前記アップデートされた仮想ROMモジュールのメッセージダイジェスト及びバージョン識別子を含める、ROMファームウェア・イメージと、
前記ROMファームウェア・イメージ及びアップデート妥当性検証手続きがロードされる前記計算デバイスのメモリとを含む計算デバイスと、
前記複数の仮想ROMモジュールを格納する前記ROMファームウェア・イメージの外部の少なくとも1つのストレージ場所とを含む、計算デバイスのファームウェアを安全にアップデートするためのシステム。 - 前記アップデートした仮想ROMモジュールが拡張可能ファームウェアインターフェース(EFI)フレームワーク・ファームウェア・ボリュームである、請求項1に記載のシステム。
- 計算デバイスのファームウェアを安全にアップデートする方法であって、
前記計算デバイスに置かれたROMイメージの外部の少なくとも1つの場所に格納される、複数の仮想ROMモジュールを作成するためにファームウェア・イメージを分割する段階と、
ファームウェア実行の最中にアップデートした仮想ROMモジュールの妥当性を検証するためのアップデート妥当性検証手続きであって、独自の識別子によって識別されると共に解読プロセスを含むアップデート妥当性検証手続きを提供する段階と、
前記ROMイメージに置かれたファームウェアのビルド内の前記複数の仮想ROMモジュール各々のための参照を含める段階であって、各参照が、関連する仮想ROMモジュール用の、バージョン識別子、メッセージダイジェスト及び独自の識別子を備え、各参照が、関連するアップデート妥当性検証手続きを識別するバリデータ識別子を備え、ファームウェアの実行が、
バージョン識別子を含むアップデートした仮想ROMモジュールの妥当性を検証するために、参照内のバリデータ識別子により識別される前記アップデート妥当性検証手続きを使用し、
前記複数の仮想ROMモジュールの1つへの前記ROMイメージに含まれる参照をアップデートして、前記アップデートされた仮想ROMモジュールの妥当性検証に続いて前記アップデートされた仮想ROMモジュールのメッセージダイジェスト及び前記アップデートされた仮想ROMモジュールのバージョン識別子を含める、計算デバイスのファームウェアを安全にアップデートする方法。 - 前記アップデートされた仮想ROMモジュールのベンダーが、
前記アップデートされた仮想ROMモジュール用のメッセージダイジェストを生成し、
前記アップデート妥当性検証手続きに含まれる前記解読プロセスに、暗号化されたメッセージダイジェストを解読することを命じる暗号化プロセスを用いて、前記アップデートした仮想ROMモジュールの前記メッセージダイジェストを暗号化する、請求項3に記載の方法。 - 前記アップデート妥当性検証手続きが、
前記アップデート妥当性検証手続きに含まれる前記解読プロセスを用いて前記暗号化されたメッセージダイジェストを解読し、
前記アップデートした仮想ROMモジュールの妥当性を検証するために、前記アップデートした仮想ROMモジュールに生成された新しいメッセージダイジェストと、前記暗号化されたメッセージダイジェストの前記解読を比較する、請求項4に記載の方法。 - 前記アップデート妥当性検証手続きが、前記アップデートした仮想ROMモジュールを新しいモジュールとして識別するために、前記アップデートした仮想ROMモジュールの前記バージョン識別子と、前記複数の仮想ROMモジュールのうちの1つの前記バージョン識別子を比較する、請求項4に記載の方法。
- 前記アップデート妥当性検証手続きを前記ROMイメージの一部として格納する、請求項4に記載の方法。
- 前記アップデート妥当性検証手続きを前記複数の仮想ROMモジュールのうちの1つとして格納する、請求項4に記載の方法。
- 前記アップデートした仮想ROMモジュールが拡張可能ファームウェアインターフェース(EFI)フレームワーク・ファームウェア・ボリュームである、請求項4に記載の方法。
- ファームウェアの実行が、
前記計算デバイスと前記アップデートされた仮想ROMモジュールを保持する信頼されたサーバーとの間に安全なトンネルを生成するために、参照内の前記バリデータ識別子により識別される前記アップデート妥当性検証手続きを使用し、
前記トンネルを用いて、前記アップデートした仮想ROMモジュールを前記計算デバイスへダウンロードする、請求項4に記載の方法。
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US64948605P | 2005-02-02 | 2005-02-02 | |
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JP2006025172A Division JP5437550B2 (ja) | 2005-02-02 | 2006-02-02 | ファームウェアの必要なメモリ容量を減らすシステム及び方法 |
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JP2006025172A Active JP5437550B2 (ja) | 2005-02-02 | 2006-02-02 | ファームウェアの必要なメモリ容量を減らすシステム及び方法 |
JP2012182646A Active JP5403771B2 (ja) | 2005-02-02 | 2012-08-21 | ファームウェアに安全なアップデートを提供するシステム及び方法 |
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Cited By (1)
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US11797457B2 (en) | 2020-09-18 | 2023-10-24 | Kabushiki Kaisha Toshiba | Electronic apparatus and method for controlling data update processing on memory |
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US20060174109A1 (en) | 2006-08-03 |
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US7603562B2 (en) | 2009-10-13 |
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US8181020B2 (en) | 2012-05-15 |
US20140136856A1 (en) | 2014-05-15 |
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US20060174240A1 (en) | 2006-08-03 |
US8645717B2 (en) | 2014-02-04 |
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