2880823 - Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program -...


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Revision Note: V2.0 (May 18, 2016): Advisory updated to provide links to the current information regarding the use of the SHA1 hashing algorithm for the purposes of SSL and code signing. For more information, see Windows Enforcement of Authenticode Code Signing and Timestamping.
Summary: Microsoft is announcing a policy change to the Microsoft Root Certificate Program. The new policy will no longer allow root certificate authorities to issue X.509 certificates using the SHA-1 hashing algorithm for the purposes of SSL and code signing after January 1, 2016. Using the SHA-1 hashing algorithm in digital certificates could allow an attacker to spoof content, perform phishing attacks, or perform man-in-the-middle attacks.

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