MS_DEF_PROV

MS_DEF_PROV is a string constant set to the name of the Microsoft Base Cryptographic Provider. This constant is used with the CryptAcquireContext and CryptSetProvider functions.

MS_DEF_PROV is defined in the Wincrypt.h header file as:

#define MS_DEF_PROV ("Microsoft Base Cryptographic Provider v1.0")