Kernel Mode Cryptographic Primitives Library (cng.sys) in Microsoft Windows 8.1 Enterprise, Windows Server 2012 R2, Windows Storage Server 2012 R2, Surface Pro 3, Surface Pro 2, Surface Pro, Surface 2, Surface, Windows RT 8.1, Windows Phone 8.1, Windows Embedded 8.1 Industry Enterprise, StorSimple 8000 Series, Azure StorSimple Virtual Array Windows Server 2012 R2
Microsoft Corporation - FIPS 140 #2356
Kernel Mode Cryptographic Primitives Library (cng.sys) runs as a kernel mode export driver, and provides cryptographic services, through their documented interfaces, to Windows kernel components. It supports several cryptographic algorithms accessible via a FIPS function table request IRP (I/O request packet).
Key facts
- Scheme
- FIPS 140
- Certificate
- 2356
- Standard
- FIPS 140-2
- Security level
- Level 1
- Status
- historical
- Vendor
- Microsoft Corporation
- Module type
- Software
- Embodiment
- Multi-Chip Stand Alone
- Lab
- Leidos Accredited Testing & Evaluation (AT&E) Lab
- First validated
- May 19, 2015
- Versions
- 6.3.9600 and 6.3.9600.17042
- Caveat
- When operated in FIPS mode with modules Boot Manager in Microsoft Windows 8.1 Enterprise, Windows Server 2012 R2, Windows Storage Server 2012 R2, Surface Pro 3, Surface Pro 2, Surface Pro, Surface 2, Surface, Windows RT 8.1, Windows Phone 8.1, Windows Embedded 8.1 Industry Enterprise, StorSimple 8000 Series validated to FIPS 140-2 under Cert. #2351 operating in FIPS mode, and BitLocker(R) Windows OS Loader (winload) in Microsoft Windows 8.1 Enterprise, Windows Server 2012 R2, Windows Storage Server 2012 R2, Surface Pro 3, Surface Pro 2, Surface Pro, Surface 2, Surface, Windows RT 8.1, Windows Phone 8.1, Windows Embedded 8.1 Industry Enterprise, StorSimple 8000 Series validated to FIPS 140-2 under Cert. #2352 operating in FIPS mode. The module generates cryptographic keys whose strengths are modified by available entropy
Algorithms
- AES
- CVL
- DRBG
- ECDSA
- HMAC
- KAS
- KBKDF
- RSA
- SHS
- Triple-DES
Algorithm families of the CAVP certificates listed for this module, plus post-quantum algorithms named in its documents.
CVEs that may affect this product
sec-certs has not matched any CVE to this certificate. That is not proof the product is unaffected.
Related CVEs and certificate references are automated matches by sec-certs, not reviewed by humans: treat them as "may be affected" and verify before acting.
Certificates it builds on
- 2351
- 2352
Certificate ids found in this certificate's documents (automated extraction).
Documents and sources
Source: sec-certs.org (CRoCS, Masaryk University), from NIST CMVP and the Common Criteria Portal - dataset of September 21, 2026 - synced October 15, 2026
Check certifications from your AI assistant
The Security Certifications Explorer answers FIPS 140-3 and Common Criteria questions directly inside Claude, ChatGPT, or any MCP assistant, and links each certificate to the CVEs that may affect it.
Add the certifications brain