Has anyone ever tried to encrypt or use some type of data masking within ALM Quality Center for PCI Compliance?
Yes, the answer from HP is no. However, have you looked at Gpg4win - http://www.gpg4win.org/ May be something to use for files within QC/ALM or if you export your QC/ALM results you can use the following.
I hope this helps.
John Scarpino, D.Sc.
Keep finding bugs!