Microsoft Windows Vista Cryptographic Primitives Library (bcrypt.dll)

Certificate

Module description

BCRYPT.DLL provides cryptographic services, through its documented interfaces, to Windows Vista components and applications running on Windows Vista. The cryptographic module, BCRYPT.DLL, encapsulates several different cryptographic algorithms in an easy-to-use cryptographic module accessible via the Microsoft CNG (Cryptography, Next Generation) API. It can be dynamically linked into applications by software developers to permit the use of general-purpose FIPS 140-2 compliant cryptography.

Approved algorithms

Other algorithms

AES (GCM and GMAC; non-compliant); DES; Diffie-Hellman (key agreement; key establishment methodology provides between 112 and 150 bits of encryption strength; non-compliant less than 112 bits of encryption strength); EC Diffie-Hellman (key agreement; key establishment methodology provides between 128 and 256 bits of encryption strength); MD2; MD4; MD5; RC2; RC4; RNG (SP 800-90 Dual-EC; non-compliant); RSA (key wrapping; key establishment methodology provides between 112 and 150 bits of encryption strength; non-compliant provides less than 112 bits of encryption strength)

Tested configurations

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

Validation history

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: 2008-08-15, 2009-07-24, 2012-09-06

Source documents

• NIST certificate page
• Security policy (PDF)