Difference between revisions 123927168 and 123927172 on dewiki

< previous diff
Benutzer:Kleiner Stampfi/NSAKEY
{{cleanup|date=December 2010}}
{{DISPLAYTITLE:_NSAKEY}}
'''_NSAKEY''' was a [[variable (computer science)|variable]] name discovered in [[Windows NT 4]] [[Windows_  NT_  4.0#Service_  Packs|Service Pack]] 5 (which had been released unstripped of its [[Debug symbol|symbolic debugging]] data) in August 1999 by Andrew D. Fernandes of Cryptonym Corporation. That variable contained a 1024-bit [[public key]].

== Overview ==
(contracted; show full)

== Explanations from other sources ==
Some in the software industry question whether the BXA's EAR has specific requirements for backup keys.{{Citation needed|date=September 2011}} However, none claim the legal or technical expertise necessary to authoritatively discuss that document.  The following theories have been presented.
  

Microsoft stated that the second key is present as a backup to guard against the possibility of losing the primary secret key. Fernandes doubts this explanation, pointing out that the generally accepted way to guard against loss of a secret key is [[secret splitting]], which would divide the key into several different parts, which would then be distributed throughout senior management.<ref>{{cite web |title=Analysis by Bruce Schneier |publisher=Counterpane |date=1999-09-15 |url=http://www.schneier.c(contracted; show full)

== CAPI Signature Public Keys as PGP Keys ==
In September 1999, an anonymous researcher reverse-engineered both the
primary key and the _NSAKEY into [[Pretty Good Privacy|PGP]]-compatible format and published them
to the [[key server (cryptographic)|key server
s]]s.<ref>{{cite web |title=The reverse-engineered keys |publisher=Cypherspace |date=1999-09-06 |url=http://cypherspace.org/adam/hacks/ms-nsa-key.html |accessdate=2007-01-07}}</ref>

=== Microsoft's Primary key (_KEY variable) CAPI Signature Key) ===
<pre>
 Type Bits/KeyID Date User ID
 pub 1024/346B5095 1999/09/06 Microsoft's CAPI key <[email protected]>
  
 -----BEGIN PGP PUBLIC KEY BLOCK-----
 Version: 2.6.3i
  
 mQCPAzfTc8YAAAEEALJz4nepw3XHC7dJPlKws2li6XZiatYJujG+asysEvHz2mwY
 2WlRggxFfHtMSJO9FJ3ieaOfbskm01RNs0kfoumvG/gmCzsPut1py9d7KAEpJXEb
 F8C4d+r32p0C3V+FcoVOXJDpsQz7rq+Lj+HfUEe8GIKaUxSZu/SegCE0a1CVABEB
 AAG0L01pY3Jvc29mdCdzIENBUEkga2V5IDxwb3N0bWFzdGVyQG1pY3Jvc29mdC5j
 b20+iQEVAwUQN9Nz5j57yqgoskVRAQFr/gf8DGm1hAxWBmx/0bl4m0metM+IM39J
 yI5mub0ie1HRLExP7lVJezBTyRryV3tDv6U3OIP+KZDthdXb0fmGU5z+wHt34Uzu
 xl6Q7m7oB76SKfNaWgosZxqkE5YQrXXGsn3oVZhV6yBALekWtsdVaSmG8+IJNx+n
 NvMTYRUz+MdrRFcEFDhFntblI8NlQenlX6CcnnfOkdR7ZKyPbVoSXW/Z6q7U9REJ
 TSjBT0swYbHX+3EVt8n2nwxWb2ouNmnm9H2gYfXHikhXrwtjK2aG/3J7k6EVxS+m
 Rp+crFOB32sTO1ib2sr7GY7CZUwOpDqRxo8KmQZyhaZqz1x6myurXyw3Tg==
 =ms8C
 -----END PGP PUBLIC KEY BLOCK-----
</pre>

=== Microsoft's Secondary key (_NSAKEY variable, now _KEY2) CAPI Signature Keyand _KEY2) ===
<pre>
 Type Bits/KeyID Date User ID
 pub 1024/51682D1F 1999/09/06 NSA's Microsoft CAPI key <[email protected]>

 -----BEGIN PGP PUBLIC KEY BLOCK-----
 Version: 2.6.3i

 mQCPAzfTdH0AAAEEALqOFf7jzRYPtHz5PitNhCYVryPwZZJk2B7cNaJ9OqRQiQoi
 e1YdpAH/OQh3HSQ/butPnjUZdukPB/0izQmczXHoW5f1Q5rbFy0y1xy2bCbFsYij
 4ReQ7QHrMb8nvGZ7OW/YKDCX2LOGnMdRGjSW6CmjK7rW0veqfoypgF1RaC0fABEB
 AAG0LU5TQSdzIE1pY3Jvc29mdCBDQVBJIGtleSA8cG9zdG1hc3RlckBuc2EuZ292
 PokBFQMFEDfTdJE+e8qoKLJFUQEBHnsH/ihUe7oq6DhU1dJjvXWcYw6p1iW+0euR
 YfZjwpzPotQ8m5rC7FrJDUbgqQjoFDr++zN9kD9bjNPVUx/ZjCvSFTNu/5X1qn1r
 it7IHU/6Aem1h4Bs6KE5MPpjKRxRkqQjbW4f0cgXg6+LV+V9cNMylZHRef3PZCQa
 5DOI5crQ0IWyjQCt9br07BL9C3X5WHNNRsRIr9WiVfPK8eyxhNYl/NiH2GzXYbNe
 UWjaS2KuJNVvozjxGymcnNTwJltZK4RLZxo05FW2InJbtEfMc+m823vVltm9l/f+
 n2iYBAaDs6I/0v2AcVKNy19Cjncc3wQZkaiIYqfPZL19kT8vDNGi9uE=
 =PhHT
 -----END PGP PUBLIC KEY BLOCK-----
</pre>

==See also==
* [[Trusted Computer System Evaluation Criteria]]
* [[IBM Notes#Security|Lotus Notes]]—partially encrypted messages with a NSA key

== References ==
{{Reflist}}
{{Use dmy dates|date=December 2010}}

{{DEFAULTSORT:Nsakey}}
[[Category:Microsoft criticisms and controversies]]
[[Category:History of cryptography]]
[[Category:Conspiracy theories]]
[[Category:National Security Agency]]
[[Category:Microsoft Windows security technology]]
[[Category:Articles with underscores in the title]]