DNAS

Last updated
DNAS Logo Dynamic Network Authentication System Logo.webp
DNAS Logo

Dynamic Network Authentication System (DNAS) was a proprietary authentication system created by Sony Computer Entertainment Inc made for the PlayStation 2, PlayStation Portable, and PSX. DNAS retrieved information about a user's hardware and software for authentication, copy protection, account blocking, system, rules, or game management and other purposes. [1] [2]

Contents

PlayStation 2

DNAS used a set of codes in a protected area of the game DVD together with serial numbers from the console EEPROM for online authentication. Game backups or copies using regular DVD-R burners do not have this protected area, and thus games failed to authenticate to the servers. To circumvent this, programs were made available that patch the client portion of the game to report hardcoded values without attempting to access the protected area of the DVD. This made it possible to play online with game backups and illegal copies.

Some games have a double DNAS check to prevent these patches. These techniques were introduced by Electronic Arts in most of their later games.

Discontinuation

The DNAS service was terminated on 4 April 2016 for NTSC-U and PAL regions after the last official online game, Final Fantasy XI, was taken offline on 31 March 2016, but continued to support NTSC-J PS2 titles and the PlayStation Store on the PSP. [3] Unofficial private servers allowed game play on other PS2 games until 4 April. [4] Certain games continued to work beyond 4 April and are still operational thanks to certain workarounds. [5]

Related Research Articles

<span class="mw-page-title-main">PlayStation 3</span> Sonys third home video game console, part of the seventh generation

The PlayStation 3 (PS3) is a home video game console developed and marketed by Sony Interactive Entertainment. The successor to the PlayStation 2, it is part of the PlayStation brand of consoles. It was first released on November 11, 2006, in Japan, November 17, 2006, in North America, and March 23, 2007, in Europe and Australia. The PlayStation 3 competed primarily against Microsoft's Xbox 360 and Nintendo's Wii as part of the seventh generation of video game consoles.

A regional lockout is a class of digital rights management preventing the use of a certain product or service, such as multimedia or a hardware device, outside a certain region or territory. A regional lockout may be enforced through physical means, through technological means such as detecting the user's IP address or using an identifying code, or through unintentional means introduced by devices only supporting certain regional technologies.

In the history of video games, the sixth generation era is the era of computer and video games, video game consoles, and handheld gaming devices available at the turn of the 21st century, starting on November 27, 1998. Platforms in the sixth generation include consoles from four companies: the Sega Dreamcast (DC), Sony PlayStation 2 (PS2), Nintendo GameCube (GC), and Microsoft Xbox. This era began on November 27, 1998, with the Japanese release of the Dreamcast, which was joined by the PlayStation 2 on March 4, 2000, the GameCube on September 14, 2001 and the Xbox on November 15, 2001, respectively. In March 31, 2001, the Dreamcast was among the first to be discontinued. Xbox in 2006, GameCube in 2007 and PlayStation 2 was the last, in January 2013. Meanwhile, the seventh generation of consoles started on November 22, 2005, with the launch of the Xbox 360.

A softmod is a method of using software to modify the intended behavior of hardware, such as video cards, sound cards, or game consoles in a way that can overcome restrictions of the firmware, or install custom firmware.

Homebrew, when applied to video games, refers to software produced by hobbyists for proprietary video game consoles which are not intended to be user-programmable. The official documentation is often only available to licensed developers, and these systems may use storage formats that make distribution difficult, such as ROM cartridges or encrypted CD-ROMs. Many consoles have hardware restrictions to prevent unauthorized development.

<span class="mw-page-title-main">Linux for PlayStation 2</span> Software for the PlayStation 2

Linux for PlayStation 2 is a kit released by Sony Computer Entertainment in 2002 that allows the PlayStation 2 console to be used as a personal computer. It included a Linux-based operating system, a USB keyboard and mouse, a VGA adapter, a PS2 network adapter, and a 40 GB hard disk drive (HDD). An 8 MB memory card is required; it must be formatted during installation, erasing all data previously saved on it, though afterwards the remaining space may be used for savegames. It is strongly recommended that a user of Linux for PlayStation 2 have some basic knowledge of Linux before installing and using it, due to the command-line interface for installation.

<span class="mw-page-title-main">PlayStation Broadband Navigator</span>

PlayStation Broadband Navigator was a software program for Japanese PlayStation 2 consoles that provides an interface for manipulating data on PlayStation 2 HDD Unit.

Import gamers are a subset of the video game player community that take part in the practice of playing video games from another region, usually from Japan where the majority of games for certain systems originate.

<span class="mw-page-title-main">PCSX2</span> Video game console emulator

PCSX2 is a free and open-source PlayStation 2 emulator for Windows, Linux and macOS that supports a wide range of PlayStation 2 video games with a high level of compatibility and functionality. Although PCSX2 can closely mirror the original gameplay experience on the PlayStation 2, PCSX2 supports a number of improvements over gameplay on a traditional PlayStation 2, such as the ability to use resolutions up to 8 times larger than native, anti-aliasing and texture filtering.

PlayStation Network (PSN) is a digital media entertainment service provided by Sony Interactive Entertainment. Launched in November 2006, PSN was originally conceived for the PlayStation video game consoles, but soon extended to encompass smartphones, tablets, Blu-ray players and high-definition televisions. This service is the account for PlayStation consoles, accounts can store games and other content.

Various accessories for the PlayStation 3 video game console have been produced by Sony and third-party companies. These include controllers, audio and video input devices like microphones, video cameras, and cables for better sound and picture quality.

<span class="mw-page-title-main">PlayStation 3 system software</span> System software for the PlayStation 3

The PlayStation 3 system software, is the updatable firmware and operating system of the PlayStation 3. The base operating system used by Sony for the PlayStation 3 is a fork of both FreeBSD and NetBSD known internally as CellOS or GameOS. It uses XrossMediaBar as its graphical shell.

<span class="mw-page-title-main">PlayStation 3 technical specifications</span> Overview of the PlayStation 3 technical specifications

The PlayStation 3 technical specifications describe the various components of the PlayStation 3 (PS3) video game console.

<span class="mw-page-title-main">PlayStation 2</span> Home video game console by Sony

The PlayStation 2 (PS2) is a home video game console developed and marketed by Sony Interactive Entertainment. It was first released in Japan on 4 March 2000, in North America on 26 October 2000, in Europe on 24 November 2000, and in Australia on 30 November 2000. It is the successor to the original PlayStation, as well as the second installment in the PlayStation brand of consoles. As a sixth-generation console, it competed with Nintendo's GameCube, Sega's Dreamcast, and Microsoft's Xbox. It is the best-selling video game console of all time, having sold over 155 million units worldwide, nearly triple the combined sales of the Dreamcast, GameCube, and Xbox.

<span class="mw-page-title-main">Video game console emulator</span> Program that reproduces video game consoles behavior

A video game console emulator is a type of emulator that allows a computing device to emulate a video game console's hardware and play its games on the emulating platform. More often than not, emulators carry additional features that surpass limitations of the original hardware, such as broader controller compatibility, timescale control, easier access to memory modifications, and unlocking of gameplay features. Emulators are also a useful tool in the development process of homebrew demos and the creation of new games for older, discontinued, or rare consoles.

Various accessories for the PlayStation 2 video game console have been produced by Sony, as well as third parties. These include controllers, audio and video input devices like microphones and video cameras, and cables for better sound and picture quality.

<span class="mw-page-title-main">PlayStation 4</span> Sonys fourth home video game console

The PlayStation 4 (PS4) is a home video game console developed by Sony Interactive Entertainment. Announced as the successor to the PlayStation 3 in February 2013, it was launched on November 15, 2013, in North America, November 29, 2013, in Europe, South America, and Australia, and on February 22, 2014, in Japan. A console of the eighth generation, it competes with Microsoft's Xbox One and Nintendo's Wii U and Switch.

<span class="mw-page-title-main">PlayStation 2 online functionality</span> Online service for PlayStation 2

Selected games on Sony's PlayStation 2 video game console offer online gaming or other online capabilities. Games that enable the feature provide free online play through the use of a broadband internet connection and a PlayStation 2 Network Adaptor. Since the service has no official name, it is sometimes referred as either PS2 Network Play, PS2 Network Gaming or PS2 Online.

<span class="mw-page-title-main">PlayStation 4 system software</span> System software for the PlayStation 4

The PlayStation 4 system software is the updatable firmware and operating system of the PlayStation 4. The operating system is Orbis OS, based on FreeBSD 9.

<span class="mw-page-title-main">PlayStation 2 technical specifications</span> Overview of the PlayStation 2 technical specifications

The PlayStation 2 technical specifications describe the various components of the PlayStation 2 (PS2) video game console.

References

  1. "PlayStation® Official Site: Consoles, Games, Accessories & More". us.playstation.com. Retrieved 18 July 2012.
  2. ""DNAS" (Dynamic Network Authentication System)". Sony. Archived from the original on 1 July 2008. Retrieved 7 July 2014.
  3. Frank, Allegra (31 March 2016). "Final Fantasy 11 shut down on consoles today after 14 years". Polygon. Retrieved 30 May 2019.
  4. "URGENT! DNAS SHUTDOWN - PS2 Online Gaming". Archived from the original on 25 April 2016. Retrieved 5 April 2016.
  5. "Playstation 2 Online - Online Game List". playstation2.onlineconsoles.com. Retrieved 19 July 2023.