Does Acrobat support KSP?

Question

I have a question about SHA-256 signature in AcrobatX.
I tried SHA-256 electronic signature to a PDF file using Acrobat on Windows 7.
In Acrobat XI, I could create electronic signature with SHA-256 by KSP.
However, in Acrobat X, I received the following error.
(I use same signature mechanism.)
The Windows Cryptographic Service Provider reported an error:
  The keyset is not defined.
  Error Code 2148073497
Does Acrobat X support both CSP and KSP? or only CSP?
To careate electronic signature with SHA-256 by KSP in Acrobat X, SDK should be required?

Answer 1

Thank you very much for your prompt reply.
As you mentioned, CSP is Cryptographic Service Provider.
KSP stands for "Key Storage Provider" which is a provider like CSP.
KSP is a provider used in CNG(Crptography Next Generation) implemented from Windows Vista.
I want to create SHA-256 signature in Operating System later than Windows Vista.
However, when CSP is specified to create SHA-256 signature, the signature created is SHA-1.
Therfore, I implemented SHA-256 signature using "KSP".
In Acrobat XI, I could create SHA-256 signature by KSP as I expected.
But, in Acrobat X, KSP did not work and I received error message "The keyset is not defined".
(The signature mechanism is same.)
Therefore, I guess that Acrobat X doesn't support KSP.
Is that correct?