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x.509
About this tag
The x.509 tag on WindowsForum.com covers discussions around Microsoft's policies and security updates related to X.509 certificates. Key topics include Microsoft's deprecation of the SHA-1 hashing algorithm for issuing X.509 certificates under the Microsoft Root Certificate Program, which affects SSL and code signing. The tag also addresses vulnerabilities in digital signatures that could lead to denial of service when processing specially crafted X.509 certificates. Additionally, there is content on Microsoft's long-term plan to transition to post-quantum cryptography (PQC) across Windows, Azure, and Microsoft 365, which will impact X.509 certificate usage. These threads are relevant for IT professionals and system administrators managing certificate security in Windows environments.
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Microsoft Sets 2033 PQC Rollout Across Windows, Azure, M365 with 2029 Start
Microsoft has set a firm, public timetable to make its entire product and service portfolio resilient to the quantum threat — committing to enable early adoption of quantum‑safe capabilities by 2029 and to complete a full transition to post‑quantum cryptography (PQC) across Windows, Azure...- ChatGPT
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- crypto agility dilithium hndl hybrid cryptography ietf kyber microsoft 365 microsoft azure migration ml-dsa ml-kem post-quantum cryptography pqc quantum-safe sphincs+ symcrypt tls windows x.509
- Replies: 0
- Forum: Windows News
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2880823 - Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program -...
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...- News
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- attack authenticode certificate certification code signing digital certificates man-in-the-middle microsoft phishing policy change policy enforcement revision root certificate security sha1 ssl update v2.0 x.509
- Replies: 0
- Forum: Security Alerts
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3123479 - Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program -...
Revision Note: V1.0 (January 12, 2016): Advisory published. Summary: Microsoft is announcing a policy change to the Microsoft Root Certificate Program. The new policy no longer allows root certificate authorities to issue X.509 certificates using the SHA-1 hashing algorithm for the purposes of...- News
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- 2016 advisory attack certificate code signing deprecation digital certificates man-in-the-middle microsoft phishing policy change revision note root certificate security sha1 spoofing ssl technet v1.0 x.509
- Replies: 0
- Forum: Security Alerts
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3123479 - Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program -...
Revision Note: V1.0 (January 12, 2016): Advisory published. Summary: Microsoft is announcing a policy change to the Microsoft Root Certificate Program. The new policy no longer allows root certificate authorities to issue X.509 certificates using the SHA-1 hashing algorithm for the purposes of...- News
- Thread
- 2016 advisory attack certificate code signing content spoofing deprecation digital certificates hashing man-in-the-middle microsoft phishing policy change revision note root certificate security sha1 ssl x.509
- Replies: 0
- Forum: Security Alerts
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Deprecation of SHA-1 Hashing Algorithm for Microsoft Root Certificate Program - Version: 1.0
Severity Rating: Revision Note: V1.0 (November 12, 2013): Advisory published. 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...- News
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- attack prevention code signing microsoft phishing policy change root certificate security sha1 ssl x.509
- Replies: 0
- Forum: Security Alerts
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MS13-095 - Important : Vulnerability in Digital Signatures Could Allow Denial of Service...
Severity Rating: Important Revision Note: V1.0 (November 12, 2013): Bulletin published. Summary: This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow denial of service when an affected web service processes a specially crafted X.509...- News
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- bulletin denial of service digital signature microsoft ms13-095 security update vulnerability windows x.509
- Replies: 0
- Forum: Security Alerts
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Authenticity and the November 2013 Security Updates
If you haven't had a chance to see the movie Gravity, I highly recommend you take the time to check it out. The plot moves a bit slowly at times, but director Alfonso Cuaron's work portrayal of zero gravity is worth the ticket price alone. Add in stellar acting and you end up with an epic movie...- News
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- activex authenticity certificate cryptography cve deployment digital signature directaccess emet internet explorer microsoft patch management remote code execution security sha-2 sha1 update vulnerability windows 8.1 x.509
- Replies: 0
- Forum: Security Alerts
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Microsoft Security Advisory (2880823): Deprecation of SHA-1 Hashing Algorithm for Microsoft...
Revision Note: V1.0 (November 12, 2013): Advisory published. 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...- News
- Thread
- advisory algorithms attack certificate code signing digital security hashing man-in-the-middle microsoft phishing policy change revision note root certificate security sha1 spoofing ssl v1.0 x.509
- Replies: 0
- Forum: Security Alerts
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Microsoft Security Advisory (2880823): Deprecation of SHA-1 Hashing Algorithm for Microsoft...
Revision Note: V1.0 (November 12, 2013): Advisory published. 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...- News
- Thread
- advisory attack certificate code signing cybersecurity digital certificates hashing man-in-the-middle microsoft phishing policy policy change root certificate security sha1 spoofing ssl vulnerability x.509
- Replies: 0
- Forum: Security Alerts
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Microsoft Security Advisory (961509): Research proves feasibility of collision attacks against MD5
Revision Note: Advisory published Summary: Microsoft is aware that research was published at a security conference proving a successful attack against X.509 digital certificates signed using the MD5 hashing algorithm. This attack method would allow an attacker to generate additional...- News
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- advisory attack authentication certificate collision conference cryptography cybersecurity digital signature hashing md5 microsoft research security vulnerability x.509
- Replies: 0
- Forum: Security Alerts