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Windows 7 Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH)

FIPS 140-2 certificate #1331 · Microsoft Corporation · data as of 2026-10-21

Windows 7 Enhanced DSS and Diffie-Hellman Cryptographic Provider (DSSENH), from Microsoft Corporation, holds FIPS 140-2 certificate #1331 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. RNG SP800-131A Revision 1 Transition. Federal agencies may reference historical validations for existing systems only, not for new procurement.
Caveat: When operated in FIPS mode with Windows 7 Code Integrity (ci.dll) validated to FIPS 140-2 under Cert. #1327 operating in FIPS mode and Microsoft Windows 7 Kernel Mode Cryptographic Primitives Library (cng.sys) validated to FIPS 140-2 under Cert. #1328 operating in FIPS mode

Certificate

Certificate number1331
StandardFIPS 140-2
Statushistorical
Overall level1
Module typeSoftware
EmbodimentMulti-chip standalone
VendorMicrosoft Corporation · website
Software versions6.1.7600.16385

Module description

Quoted from the NIST CMVP entry for this certificate.

DSSENH encapsulates several different cryptographic algorithms in an easy-to-use cryptographic module accessible via the Microsoft CryptoAPI. Software developers dynamically link the Microsoft DSSENH module into their applications to provide FIPS 140-2 compliant cryptographic support.

Approved algorithms (5)

AlgorithmCAVP certificates
DSA385
RNG649
SHS1081
Triple-DES846
Triple-DES MACvendor affirmed

Other algorithms

DES; DES MAC; DES40; DES40 MAC; Diffie-Hellman; MD5; RC2; RC2 MAC; RC4

Tested configurations

  • Microsoft Windows 7 Ultimate Edition (x64 version)
  • Microsoft Windows 7 Ultimate Edition (x86 Version)
  • Microsoft Windows 7 Ultimate Edition SP1 (x64 version) (single-user mode)
  • Microsoft Windows 7 Ultimate Edition SP1 (x86 version)

Validation history

DateTypeLab
2010-08-12InitialSAIC-VA
2011-06-01UpdateSAIC-VA

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: 2010-08-12, 2011-06-01

Source documents