This illustration shows the certificate key-store that comes up within Internet Explorer, with a list of selections from which to choose a provider of cryptography services.
The illustration shows, as an example, the following five choices:
Gemplus GemSAFE Card DSP v1.0 (pre-selected)
Microsoft Base Cryptographic Provider v1.0
Microsoft Enhanced Cryptographic Provider v1.0 (512-bit key size)
Microsoft Strong Cryptographic Provider v1.0 (1024-bit key size)
Schlumberger Cryptographic Service Provider