SSSS Mobile Android

SSSS Mobile

A mobile implementation of Shamir's Secret Sharing Scheme (SSSS)

Features & Capabilities

SSSS Mobile is an implementation of Shamir's Secret Sharing Scheme (SSSS). In cryptography, Secret Sharing allows you to split a short "secret" text into multiple shares for later reconstruction when a specified threshold of shares are available.

With SSSS Mobile, shares can be copied into another application, encoded in a QR Code, written to an NFC tag or shared via email. Shares can later be retrieved from text, QR Code or NFC Tag. The optional Token parameter is prefixed to the share text to help describe the share or threshold.

Some possible use cases for SSSS Mobile:

* Split a short message intended for a group of individuals to decode only when the group is together. It may be interesting to store the shares on NFC tags attached to physical objects in this scenario.

* Split an important but rarely used strong password across multiple QR Codes. Print and hide these QR codes in multiple locations for later retrieval.

* Encrypt a large file with a difficult to remember password. Store the file in a potentially insecure location, but store the SSSS shares that protect your password in various other locations. Perhaps hide a large number of shares but only require a lower threshold for combination later if there is potential for some shares to be lost.

* Encrypt the private key to your Bitcoin or other cryptocurrency holdings with an impossible to remember password. SSSS split the password, print the shares to QR Code and bury them in multiple locations. Require a lower threshold than the total number of hidden shares in case some are lost or damaged over time.

IMPORTANT #1: If you intend to protect potentially important information, please take all necessary backup precautions and use at your own risk!

IMPORTANT #2: The threshold must be met EXACTLY at the time of retrieval/combination. You cannot combine more or less than the exact threshold specified at the time that the share set is generated. It may be useful to use the optional Token parameter to indicate the threshold. Combining the wrong number of shares or invalid shares may result in an error OR an incorrect secret message reconstruction.

IMPORTANT #3: The secret message must be 128 characters or less. The longer the message, the more processing time will be required for splitting and combining. For large secrets it is recommended to encrypt with a tool such as PGP/GPG and SSSS split only the password.

Additional Notes:

* This app uses the ssss-js library by Gabriel Burca to be compatible with the "ssss" UNIX/Linux application by B. Poettering.

* Support & FAQ: https://ssssmobile.app

* SSSS Mobile source available at: https://github.com/drunnells/SSSS-Mobile

User Growth & Download Statistics

App
By:
Dustin Runnells
Downloads:
170 1
Version:
1.0.4.7 Last updated: 2025-09-28
Version code:
21
Creation date:
2020-04-01
Publisher country:
US US
Permissions:
  • android.permission.CAMERA Very high risk
  • android.permission.READ_EXTERNAL_STORAGE High risk
  • android.permission.WRITE_EXTERNAL_STORAGE High risk
  • android.permission.NFC Low risk
  • android.permission.FLASHLIGHT Safe
  • android.permission.VIBRATE Safe
  • com.dustinrunnells.ssss.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Size:
37.93MB
Email:
du*****@runnells.name
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Google Play Store
Data ingested on:
2026-06-14
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.
Developed by:
Dustin Runnells
Google Play Store
https://play.google.com/store/apps/details?id=com.dustinrunnells.ssss
Email:
du*****@runnells.name
Website:
http://ssssmobile.app

User Reviews

Only app for this I can find and I'm just glad it works. Would be cool if it didnt wait for camera permission until needed, and allowed adding/removing shares (I believe it's mathematically possible), and showed progress while splitting/combining long secrets. i cant wait to hand out shares to my friends for my password manager's account recovery code 😃 this app makes it easy 🙏🙏
by al*****, 2024-07-05

Excellent app.
by Ma*****, 2021-12-07
View all user reviews ›

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