808bits

Kernel Mode Cryptographic Primitives Library (cng.sys) in Microsoft Windows 10, Windows 10 Pro, Windows 10 Enterprise, Windows 10 Enterprise LTSB, Windows 10 Mobile, Windows Server 2016 Standard, Windows Server 2016 Datacenter, Windows Storage Server 2016, Azure Host OS (version 1.65)

FIPS 140-2 certificate #2936 · Microsoft Corporation · data as of 2026-10-21

Kernel Mode Cryptographic Primitives Library (cng.sys) in Microsoft Windows 10, Windows 10 Pro, Windows 10 Enterprise, Windows 10 Enterprise LTSB, Windows 10 Mobile, Windows Server 2016 Standard, Windows Server 2016 Datacenter, Windows Storage Server 2016, Azure Host OS (version 1.65), from Microsoft Corporation, holds FIPS 140-2 certificate #2936 at overall level 1. The validation is historical: agencies may keep the module in existing systems but not buy it new. Below are its validation history, algorithm certificates and security policy, drawn from the NIST CMVP entry.

Historical. Moved to historical list due to dependency on certificate #2932. Federal agencies may reference historical validations for existing systems only, not for new procurement.
Caveat: When operated in FIPS mode with modules BitLocker(R) Windows OS Loader (winload) in Microsoft Windows 10, Windows 10 Pro, Windows 10 Enterprise, Windows 10 Enterprise LTSB, Windows 10 Mobile, Windows Server 2016 Standard, Windows Server 2016 Datacenter, Windows Storage Server 2016 validated to FIPS 140-2 under Cert. #2932 or #3502 operating in FIPS mode or BitLocker(R) Windows Resume (winresume) in Microsoft Windows 10, Windows 10 Pro, Windows 10 Enterprise, Windows 10 Enterprise LTSB, Windows Server 2016 Standard, Windows Server 2016 Datacenter, Windows Storage Server 2016 validated to FIPS 140-2 under Cert. #2933 or #3501 operating in FIPS mode

Certificate

Certificate number2936
StandardFIPS 140-2
Statushistorical
Overall level1
Module typeSoftware
EmbodimentMulti-Chip Stand Alone
VendorMicrosoft Corporation · website
Software versions10.0.14393, 10.0.14393.1770 and Azure Host OS version 1.65

Module description

Quoted from the NIST CMVP entry for this certificate.

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).

Security level exceptions

  • Physical Security: N/A
  • Design Assurance: Level 2

Approved algorithms (13)

AlgorithmCAVP certificates
AES4064, 5295, C2046
CVL886, 887, 1762, 1763, C2046, C2061
DRBG1217, 2036, C2046
DSA1098, 1371, C2046
ECDSA911, 1384, C2046
HMAC2651, 3497, C2046
KAS92, 171, C2046
KBKDF101, 185, C2061
KTS
PBKDFvendor affirmed
RSA2192, 2193, 2195, 2833, 2834, 2847, C2046
SHS3347, 4250, C2046
Triple-DES2227, 2675, C2046

Other algorithms

HMAC-MD5; MD5; NDRNG

Tested configurations

  • Azure Host OS (x64) running on a Dell PowerEdge R840 Server with an Intel Xeon Platinum 8260 with PAA
  • Windows 10 Anniversary Update (x64) running on a Dell XPS 8700 with PAA
  • Windows 10 Anniversary Update (x64) running on a Microsoft Surface 3 with PAA
  • Windows 10 Anniversary Update (x86) running on a Dell Inspiron 660s without PAA
  • Windows 10 Enterprise Anniversary Update (x64) running on a Dell Precision Tower 5810MT with PAA
  • Windows 10 Enterprise Anniversary Update (x64) running on a HP Compaq Pro 6305 with PAA
  • Windows 10 Enterprise Anniversary Update (x64) running on a Microsoft Surface Book with PAA
  • Windows 10 Enterprise Anniversary Update (x64) running on a Microsoft Surface Pro 3 with PAA
  • Windows 10 Enterprise Anniversary Update (x64) running on a Microsoft Surface Pro 4 with PAA
  • Windows 10 Enterprise Anniversary Update (x86) running on a Dell Inspiron 660s without PAA
  • Windows 10 Enterprise LTSB Anniversary Update (x64) running on a Dell Precision Tower 5810MT with PAA
  • Windows 10 Enterprise LTSB Anniversary Update (x64) running on a Dell XPS 8700 with PAA
  • Windows 10 Enterprise LTSB Anniversary Update (x86) running on a Dell Inspiron 660s without PAA
  • Windows 10 Mobile Anniversary Update (ARMv7) running on a Microsoft Lumia 950
  • Windows 10 Pro Anniversary Update (x64) running on a Dell Precision Tower 5810MT with PAA
  • Windows 10 Pro Anniversary Update (x64) running on a Microsoft Surface Book with PAA
  • Windows 10 Pro Anniversary Update (x64) running on a Microsoft Surface Pro 3 with PAA
  • Windows 10 Pro Anniversary Update (x64) running on a Microsoft Surface Pro 4 with PAA
  • Windows 10 Pro Anniversary Update (x86) running on a Dell Inspiron 660s without PAA
  • Windows Server 2016 Datacenter Edition (x64) running on a Dell PowerEdge R630 Server with PAA
  • Windows Server 2016 Standard Edition (x64) running on a Dell PowerEdge R630 Server with PAA
  • Windows Server 2016 Standard Edition (x64) running on a HP Compaq Pro 6305 with PAA
  • Windows Storage Server 2016 (x64) running on a Dell PowerEdge R630 Server with PAA (single-user mode)

Validation history

DateTypeLab
2017-01-26InitialLeidos Accredited Testing & Evaluation (AT&E) Lab
2019-08-07UpdateLeidos Accredited Testing & Evaluation (AT&E) Lab
2022-09-01UpdateLeidos Accredited Testing & Evaluation (AT&E) Lab

Status timeline

As observed by this tracker's snapshots. NIST publishes no dates for list moves; observation began 2026-08-21, so earlier changes carry no date.

  • 2026-08-21: first observed by this tracker, status historical
  • Validation dates on record: 2017-01-26, 2019-08-07, 2022-09-01

Source documents