Yes, IBM does do the IDRC compression before they do the encryption. That is one of the advantages over the CPACF encryption that is done by the encryption products running on the mainframe itself.
Russell -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] Behalf Of Arthur T. Sent: Friday, September 01, 2006 9:40 PM To: [email protected] Subject: Re: IBM announces Encrypting tape drives On 31 Aug 2006 08:28:04 -0700, in bit.listserv.ibm-main (Message-ID:<[EMAIL PROTECTED] m.com>) [EMAIL PROTECTED] (Alan Altmark) wrote: >...snip...< The one thing I wanted to learn wasn't there (or at the "learn more" site pointe from the site. Did the designers do the right thing and compress *before* encryption? That increases tape capacity; just as important important, it makes cryptanalysis more difficult ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
