Claims authentication replace STSTestCert certificate for production use

I have created a Custom STS using the claims walkthrough here: http://msdn.microsoft.com/en-us/libra开发者_运维百科ry/ff955607.aspx.

I would like to use a different certificate now so that we can release this to production and am not sure how to go about this, i.e.

• Do we need to purchase a signed certificate from somewhere?
• What type of certificate should it be?

Any help would be greatly appreciated.

I have done this by using a self-signed certificate:

makecert.exe -sr LocalMachine -ss My -a sha1 -n CN=CertName -sky exchange -r -pe -sk 974877a3-6154-40e4-b688-25fe8962dc17 CertName.cer
certmgr.exe -add -c -n  CN=CertName -s -r localMachine My -s -r localMachine TrustedPeople

I then exported this with the private key and imported it into the website and SharePoint servers.