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This one is tough to Google. I’m trying to find a solution or API to encrypt/protect a file with multiple passwords. The passwords would be handed out to users separately.
I looked at DotNetZip and the usual Zip and Rar solutions (including PKWare) for a way to multi-password protect a file.
All suggestions are welcome! I wouldn’t be posting this question if it was either impossible or uncommon. Thanks!
You can use passphrase-based OpenPGP encryption. It lets you specify several independent passphrases and supports compression. OpenPGPBlackbox package of our SecureBlackbox product does this (among a number of other features) and it’s available for .NET, Java and VCL.