Why does VB 2008 show the following error on my system : Code: The specified cryptographic algorithm is not supported on this platform. when I try to use SHA-384 or SHA-512 hashing algos ?? I have some other programs written with VB 2008 or C# 2008, which use SHA-512 hashing (I know this through Reflector), but run perfectly fine on my system ! I don't understand this. I would be really grateful, if someone could help me.