Use CryptBinaryToString() for base64 instead of Apple's base64.c

[schlenk]

https://msdn.microsoft.com/en-us/library/windows/desktop/aa379887%28v=vs.85%29.aspx

You probably load crypt32.dll anyway via the SSPI stuff.

[behackett]

That's an interesting idea, thanks for the link. It would be nice to get rid of Apple's base64 library.

[behackett]

See also CryptStringToBinary()

https://msdn.microsoft.com/en-us/library/windows/desktop/aa380285(v=vs.85).aspx

[behackett]

It looks like you have to explicitly link against Crypt32.lib for this to work. secur32.lib isn't enough.