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Multi-DVD or (multi-CD) spanning backups with tar
Authored by: payrolldude on Jun 23, '05 04:10:17PM

Any clues on how to do self extracting encrypted archives for Windows? I need to send sensitive data (I am a bookkeeper) to clients who have not seen the light. Even if they are not self extracting, that is okay, as long as they are encrypted. Thanks all.



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Multi-DVD or (multi-CD) spanning backups with tar
Authored by: PopMcGee on Jun 23, '05 04:33:27PM

.Zip files can be encrypted (needs third party tools), as can pdf (included in Tiger with the help of automator). Both are cross-platform.



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Windows file encryption
Authored by: victory on Jun 24, '05 01:55:28AM

At one time the Windows version of PGP could create self-decrypting archives. (Likewise the Mac version of PGP created mac executables) Seemed like a good idea for sending sensitive content to recipient without the PGP package installed -- except that a lot of people (and corporate email servers) are now highly suspicious about .exe (executable) attachments. I haven't kept track of PGP so I don't know how current (or relevant) it is any more.

As to encrypted ZIP files, the problem is that there are several variants of this format and using the wrong options could create a false sense of security in a weakly protected file. In particular, the classic 'encryption' feature used in the original PKZip products isn't considered cryptographically secure in the least. (It's more akin to the casual password-protection of documents that word processors offer) There are at least two competing Windows products that offer AES encrypted zip files, but there is some question as to how standard the format is.

One final note: So far the only cross-platform, somewhat legacy-proof, albeit cumbersome method of encrypting flat files I've come across is the openssl cmd-line utility. (See http://www.openssl.org/docs/apps/enc.html )



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Multi-DVD or (multi-CD) spanning backups with tar
Authored by: qwerty denzel on Jun 24, '05 02:13:08AM

Stuffit Deluxe? http://www.stuffit.com/mac/deluxe/index.html



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