I want to use AES 256 bit enncrytion for data and it is provided by "MS_ENH_RSA_AES_PROV" .For that When I tried running below code with pszProviderName=TEXT("MS_ENH_RSA_AES_PROV") as 3rd parameter of CryptAcquireContext, I get output something like Error number 80090019 .This error code means "The requested provider does not exist". #include [...] read more