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Strong passphrase experiment

By WIlliam Cheswick

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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. 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 AES encryption and PBKDF key derivation techniques. The encoded envelope is stored as a UTF-8 text file (extension .105) that can be stored, mailed, and installed.

Note that this app does not store any keys permanently. The user must supply them when an envelope is opened. The keys are retained until the envelope is closed or modified and sealed.

What's New in Version 1.0.1

Add word lists used in Joe Bonneau's new work.


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Strong passphrase experiment
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This app is designed for both iPhone and iPad
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.0.1
  • Size: 0.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch.

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