Peter Gutmann is a computer scientist in the Department of Computer Science at the University of Auckland, Auckland, New Zealand; he also received his Ph.D. in computer science from the University of Auckland. Interested in computer security issues, including security architecture, security usability (or more precisely the lack thereof), and hardware security, he has discovered assorted flaws in publicly released cryptosystems and protocols. He is the developer of the cryptlib open source software security library and contributed to PGP version 2. He is also known for his analysis of data deletion on electronic memory media, magnetic and otherwise, and devised the Gutmann method for erasing data from a hard drive more or less securely. Peter Gutmann is a computer scientist based in Auckland, New Zealand; he received his Ph. ... Computer science, or computing science, is the study of the theoretical foundations of information and computation and their implementation and application in computer systems. ... The University of Auckland (Māori: Te Whare Wānanga o Tāmaki Makaurau) is New Zealands largest research-based university. ... Schematic map of Auckland. ... This article describes how security can be achieved through design and engineering. ... Computer security model refer to the underlying computer architectures, protection mechanisms, distributed computing environment security issues, and formal models that provide the framework for information systems security policy. ... Usability is a term used to denote the ease with which people can employ a particular tool or other human-made object in order to achieve a particular goal. ... This article does not cite any references or sources. ... There are two different meanings of the word cryptosystem. ... A cryptographic protocol is an abstract or concrete protocol that performs a security-related function and applies cryptographic methods. ... cryptlib is an open source cross-platform software security toolkit. ... Open source refers to projects that are open to the public and which draw on other projects that are freely available to the general public. ... PGP Encryption (Pretty Good Privacy) is a computer program that provides cryptographic privacy and authentication. ... In physics, magnetism is a phenomenon by which materials exert an attractive or repulsive force on other materials. ... The Gutmann method is an algorithm for securely shredding the contents of computer hard drives, such as files. ... Typical hard drives of the mid-1990s. ...

Having lived in New Zealand (NZ) for some time, he has written on such subjects as wetas, which are peculiar to NZ, and the Auckland power crisis of 1998, during which the electrical power system failed completely in the central city for five weeks. See, for instance, Auckland: Your Y2K beta test site on Gutmann's Homepage. He has also written on his career as an "arms courier" for New Zealand, detailing the difficulty faced in complying with customs control regulations with respect to cryptographic products (once classed as "munitions"). This article is about the insect. ... The 1998 Auckland power crisis was an event that occurred in the Auckland, New Zealand Central Business District. ...

Criticism of Windows Vista

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His white paper "Cost Analysis of Windows Vista Content Protection", in which he described the content protection specification as "the longest suicide note in history",^[1] generated considerable public interest since it was first posted in 2006. He discussed this with Steve Gibson in episode #74 of the Security Now! podcast on 2007-01-11.^[2] Image File history File links Unbalanced_scales. ... Shortcut: WP:NPOV Wikipedia policy is that all articles should be written from a neutral point of view. ... A white paper is an authoritative report. ... Windows Vista is a line of graphical operating systems used on personal computers, including home and business desktops, notebook computers, Tablet PCs, and media centers. ... The longest suicide note in history is an epithet originally used by Gerald Kaufman to describe the Labour Partys left-wing 1983 election manifesto. ... Steve Gibson (born March 1955) is a computer enthusiast, software engineer and self-proclaimed security expert based in Laguna Hills, California. ... Security Now! is a weekly podcast (Internet radio show) hosted by Leo Laporte of this WEEK in TECH and Steve Gibson of Gibson Research Corporation (GRC). ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 11th day of the year in the Gregorian calendar. ...

Criticism of Peter Gutmann's analysis of Vista DRM

Peter Gutmann's Vista criticism has came under fire after his speech at the USENIX Security Symposium in August 2007.^[3] from George Ou (ZDNet) who challenged Peter Gutmann's claims that Vista Content Protection causes so much additional CPU utilization that it increases power consumption and causes global warming.^[4] Gutmann made many of the basic assertions in his paper on Vista content protection but made the more extreme statements at Usenix Boston 2007 as reported by PCWorld.^[3] Ou cited data that showed no measurable power differences between 5% and 15% CPU utilization on an Intel E6600 dual-core processor and then cited HD playback performance data from AnandTech which indicated less than 7% total CPU consumption during 1080p VC-1 encoded video playback.^[5] Ed Bott challenged some of Peter Gutmann's other claims.^[6] Ken Fisher challenged Gutmann's claim that Vista content protection extended beyond commercial content in to user generated content.^[7] The USENIX Association is the Advanced Computing Technical Association. ... PC World may mean: PC World (magazine), an American computer magazine PC World (retailer), a British computer store chain See also Personal Computer World, an unrelated British computer magazine This is a disambiguation page: a list of articles associated with the same title. ...

Gutmann admittedly doesn't run Windows Vista and stated in his paper: "Can others confirm this? I don't run Vista yet, but if this is true then it would seem to disconfirm Microsoft's claims that the content protection doesn't interfere with playback and is only active when premium content is present". This statement has recently been removed from Gutmann's website but an older PDF version the paper with that statement can be found here.

George Ou later reported that Gutmann relied on web forum postings for several of his key assertions such as excessive CPU and memory consumption in Vista’s Media Foundation Protected Pipeline (mfpmp.exe) and AudioDG (Windows Audio Device Graph Isolation) process. Ou's tests showed that the web forum data Gutmann relied on were not repeatable. Furthermore, CPU utilization was wrongly attributed to mfpmp.exe when in fact it was actually accounting for all the CPU consumption in mfpmp.exe and Windows Media Player 11 combined.

See also

• Criticism of Windows Vista

Windows Vista, the latest version of Microsofts desktop operating system, has been the subject of a number of negative assessments by various groups. ...

Bibliography

• Gutmann, Peter (2003). "Cryptographic Security Architecture: Design and Verification", ISBN 978-0387953878

References

Guttman security Algorithm Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... is the 360th day of the year (361st in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 28th day of the year in the Gregorian calendar. ... Security Now! is a weekly podcast (Internet radio show) hosted by Leo Laporte of this WEEK in TECH and Steve Gibson of Gibson Research Corporation (GRC). ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 11th day of the year in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ... PC World may mean: PC World (magazine), an American computer magazine PC World (retailer), a British computer store chain See also Personal Computer World, an unrelated British computer magazine This is a disambiguation page: a list of articles associated with the same title. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 222nd day of the year (223rd in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ... In 1991 Ziff Davis Publishing Company brought together a small, diverse set of online forums and information services (most notably PC MagNet) under the name ZiffNet, which later evolved into ZDNet. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 225th day of the year (226th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ... AnandTech. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 143rd day of the year (144th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ... In 1991 Ziff Davis Publishing Company brought together a small, diverse set of online forums and information services (most notably PC MagNet) under the name ZiffNet, which later evolved into ZDNet. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 226th day of the year (227th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ... Ars Technica is a technology-related website catering to PC enthusiasts. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 224th day of the year (225th in leap years) in the Gregorian calendar. ... Year 2007 (MMVII) is the current year, a common year starting on Monday of the Gregorian calendar and the AD/CE era. ... is the 243rd day of the year (244th in leap years) in the Gregorian calendar. ...

External links

• Gutmann's Homepage
• Vista copy protection is defended, 2007-01-22 BBC reported Microsoft's response to Gutman's white paper