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ITsVISTA KB-Link: KB954059

The random number generator is not compliant with Federal Processing Standard 140-2 in Windows Vista Service Pack 1 and in Windows Server 2008

In Windows Vista Service Pack 1 (SP1) and in Windows Server 2008, the random number generator (RNG) is not compliant with Federal Information Processing Standard (FIPS) 140-2.

This problem affects all the functions that use the RNG. The CryptoAPI function CryptGenRandom and the CNG function BCryptGenRandom use the RNG directly. Other functions that generate random numbers for keying material or for other purposes may also use the RNG indirectly.

Important This problem does not affect the external behavior of any functions that use the RNG. It does not affect the strength of any system cryptographic implementations. Additionally, it does not change cryptographic functionality in any other way.

There is a download that resolves this issue. See Hotfixes for details.
64-Bit Download: Contact Microsoft

For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB954059.

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