Unable to create a management pack key token to seal a management pack using MPSeal.exe

Question

Hi All,
I am trying to seal a custom made management pack. I refereed Jonathan
Almquist blog to do it. When i do it i get a error message Access is denied while creating a public key token.
Blog link: http://blogs.technet.com/b/jonathanalmquist/archive/2008/08/19/seal-a-management-pack.aspx
I get this error when i run the second command which i have Bolded below
Below are the directories i used.
C:\MP_Seal - To keep the SN.EXE & MPSEAL.exe and the unsealed management pack.
Created 2 folders named output & Pubkey in C:\MP_Seal
Opened command prompt Run as Administrator:
I am a domain admin and i have full access to the whole server
Ran the below commands to generate a Key
Note: I have changed my key name in this article to Mykey.Snk due to privacy issues.
1.C:\MP_Seal\sn -k C:\MP_Seal\Mykey.Snk
2.C:\MP_Seal\sn -p C:\MP_Seal\Mykey.Snk C:\MP_Seal\PubKey
3.C:\MP_Seal\sn -tp C:\MP_Seal\Pubkey
The first command how ever generated me a snk file. The second shows Access is denied
Also created the same setup in the D:\ Drive as well. Still the same issue occurs
Can any one help please.
Gautam.75801

Answer 1

Thank you for the reply Jon,
As i don't have a key generated already for me hence i am creating a new one. What i wanted to know is that is that, The first command however creates me a .SNK file. Is that enough for me to seal a management pack ? If yes what is the use of the second
and third mentioned below ? 
1.C:\MP_Seal\sn -k C:\MP_Seal\Mykey.Snk
2.C:\MP_Seal\sn -p C:\MP_Seal\Mykey.Snk C:\MP_Seal\PubKey
3.C:\MP_Seal\sn -tp C:\MP_Seal\Pubkey
Gautam.75801