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This is an experimental app to see if there is a way for users to remember pass phrases that correspond to long, computer-generated random keys

Strong passphrase experiment

by WIlliam Cheswick

What is it about?

This is an experimental app to see if there is a way for users to remember pass phrases that correspond to long, computer-generated random keys. The random keys generated go up to 105 bits long (hence, the name.) Random keys are generated by /dev/random, though the next version will include additional entropy from the video camera, a la the lava lamp generation from many years ago.

App Details

Version
2.0
Rating
NA
Size
1Mb
Genre
Utilities Reference
Last updated
November 24, 2016
Release date
May 13, 2014
More info

App Screenshots

App Store Description

This is an experimental app to see if there is a way for users to remember pass phrases that correspond to long, computer-generated random keys. The random keys generated go up to 105 bits long (hence, the name.) Random keys are generated by /dev/random, though the next version will include additional entropy from the video camera, a la the lava lamp generation from many years ago.

The keys are encoded using one of many non-secret dictionaries, and the user is expected to eventually learn a phrase of pets seven random words.

These keys are used to lock a simple memo-pad type file with AES256 encryption and PBKDF key derivation techniques. The encoded envelope is saved as a UTF-8 text file (extension .105) that can be stored, mailed, and installed.

Note that this app does not envision storage of any keys permanently on a computer, but the keychain may be used until the passphrase is learned.

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