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Was (wer) ist SYSKEY - definition

DISCONTINUED COMPONENT OF WINDOWS NT ENCRYPTING THE SECURITY ACCOUNT MANAGER DATABASE

SysKey; SYSKEY; SAM Lock Tool; Syskey.exe

SYSKEY

<cryptography, operating system, security> A utility that encrpyts the hashed password information in a SAM database using a 128-bit encryption key. SYSKEY was an optional feature added in Windows NT 4.0 SP3. It was meant to protect against offline password cracking attacks so that the SAM database would still be secure even if someone had a copy of it. However, in December 1999, a security team from BindView (http://bindview.com/) found a security hole in SYSKEY which indicates that a certain form of cryptoanalytic attack is possible offline. A brute-force attack then appeared to be possible. Microsoft later collaborated with BindView to issue a fix (dubbed the 'Syskey Bug') which appears to have been settled and SYSKEY pronounced secure enough to resist brute-force attack. According to Todd Sabin of the BindView team RAZOR, the pre-RC3 versions of Windows 2000 were also affected. {BindView Security Advisory (http://packetstorm.securify.com/9912-exploits/bindview.syskey.txt)}. {BindView press release (http://bindview.com/news/99/1222.html)}. {Microsoft bulletin (http://microsoft.com/Security/Bulletins/ms99-056.asp)}. (2000-07-16)

Syskey

The SAM Lock Tool, better known as Syskey (the name of its executable file), is a discontinued component of Windows NT that encrypts the Security Account Manager (SAM) database using a 128-bit RC4 encryption key.

https://en.wikipedia.org/wiki/Syskey

Wikipedia

Syskey

The SAM Lock Tool, better known as Syskey (the name of its executable file), is a discontinued component of Windows NT that encrypts the Security Account Manager (SAM) database using a 128-bit RC4 encryption key.

First introduced in the Q143475 hotfix for Windows NT 4.0 SP3, the tool was removed in Windows 10's Fall Creators Update in 2017 because its method of cryptography is considered unsecure by modern standards and the fact that the tool has been widely employed in scams as a form of ransomware. Microsoft officially recommended use of BitLocker disk encryption as an alternative.

https://en.wikipedia.org/wiki/Syskey