This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 52 versions of crypt32.dll in the wild, the latest version being 5.131.3790.5014 (srv03_sp2_gdr.120601-0335). The average file size is about 618.59 KB.
The Cryptographic Application Programming Interface (also known variously as CryptoAPI, Microsoft Cryptography API, MS-CAPI or simply CAPI) is an application programming interface included with Microsoft Windows operating systems that provides services to enable developers to secure Windows-based applications using cryptography.
(Note, the behaviors below are for all versions of crypt32.dll, select a unique version for details.)
United States installs about 44.06% of Crypto API32.