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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.7.4] - 2024-06-20

Fixed

  • Ensure result does not overlap with operands in calls to cx_bn_gf2_n_mul()
  • Give a warning if a user chooses 1-of-m shares when m > 1
  • Use CBOR tag for version 2 sskr
  • Update restrictions on when a release workflow is triggered

[1.7.3] - 2024-05-29

Fixed

  • Changed name of 'Generate BIP39' menus to 'Recover BIP39'
  • Changed Second Montgomery constant used for cx_bn_gf2_n_mul() to a more suitable value
  • Improve efficiency of cx_bn_gf2_n_mul() for Nano S
  • Change cmocka git repo from cryptomilk.org to GitLab

[1.7.2] - 2024-05-06

Fixed

  • Using Ledger SDK cx_crc32() function rather than buggy cx_crc32_hw().
  • Fix build with SDK master for Nano S

[1.7.1] - 2024-03-06

Changed

  • Improve efficiency of SSS interpolate() function

[1.7.0] - 2024-03-03

Added

  • Added detailed documentation for all SSKR and SSS functions

Changed

  • Changed Shamir interpolate function to use cx_bn_gf2_n_mul() syscalls
  • Changed some function names to be more descriptive
  • Reorganised and renamed some of the SSKR and Shamir code

[1.6.1] - 2024-01-27

Added

  • Added a Release Policy document

Changed

  • Updated version of cmocka used for unit tests
  • Updated version of github actions used
  • Assert HMAC return values

Fixed

  • Fixed failing Ledger rule enforcer check
  • Use cx_crc32_hw()
    • Ledger have fixed their buggy implementation of CRC32 so we can start using it again

[1.6.0] - 2024-01-14

Added

  • Use CX_CHECK macro in compare_recovery_phrase()
  • Added a cx_crc32() function
    • The implementation of cx_crc32_hw() on Ledger devices is buggy and produces incorrect CRC32 checks. Ledger are fixing cx_crc32_hw() on each device either through SDK or OS updates but until then cx_crc32() can be used.

[1.5.4] - 2023-11-30

Added

  • Added mandatory Ledger embedded application manifest file

Changed

  • Combined BIP39 wordlist and SSKR wordlist unit tests

[1.5.3] - 2023-11-18

Added

  • Added unit tests for BIP39
  • Added unit tests for BIP39 word list and SSKR word list

Fixed

  • Fixed CodeQL warnings about sign check of a bitwise operation
  • Fixed issue with restarting input from a previous word on Nano S

[1.5.2] - 2023-11-15

Changed

  • Save memory by setting the SSKR word buffer to a sensible size
    • There is just enough memory available on Nano S to hold the phrases for 10 shares. Other devices can hold the full 16 shares.
  • Tidied up code that sets 'Processing' screen on Nano S devices

Security

  • Changed all Variable Length Arrays to a defined length

Fixed

  • Fix freezing at 'Processing' screen on Nano S devices

[1.5.1] - 2023-11-09

Added

  • Added unit tests for shamir
  • Added unit tests for SSKR
  • Added unit tests for BIP39 <-> SSKR roundtrip

Changed

  • Make generic SSKR functionality more Ledger specific

Removed

  • Reduce size of Nano binaries slightly by removing duplicate flows

[1.5.0] - 2023-10-20

Added

  • Added option to recover BIP39 mnemonics from SSKR shares even if shares do not validate against seed on device
    • A user may have lost or damaged original device and now needs to recover the BIP39 phrase from another secure device

Fixed

  • Fixed build warning about UNUSED macro

[1.4.1] - 2023-10-13

Security

  • Clear buffers before exiting

[1.4.0] - 2023-05-14

Added

  • Added BIP39 Check for Ledger Stax

Fixed

  • Fixed warnings about deprecated functions during build

[1.3.2] - 2023-05-08

Added

  • Added some Ledger specific preprocessor conditionals to bc-sskr and bc-shamir

Changed

  • Changed memset(x, 0, y) to memzero(x, y) macro

[1.3.1] - 2023-05-03

Fixed

  • Fixed static analyzer warning about zero-length array
  • Fixed CodeQL warnings about comparison of narrow type with wide type in loop condition

[1.3.0] - 2023-04-27

Changed

  • Simplified flow code

Removed

  • Removed duplicated nano code

[1.2.0] - 2023-04-21

Added

  • Added automated tests
  • Added flow to set SSKR threshold values

[1.1.1] - 2023-04-06

Fixed

  • Fix issue with using 'cx_crc32_hw()' function in 'onboarding_seed_sskr.c' when testing with Speculos
  • Some CodeQL suggested tidy ups

[1.1.0] - 2023-04-04

Added

  • Recover BIP39 mnemonic phrases from SSKR shares
    • Add 'SSKR Check' menu option
    • Add flow to the 'SSKR Check' menu
    • Write SSKR to BIP39 functionality
    • Test with 29-word SSKR shares
    • Test with 46-word SSKR shares
    • Test on nanos
    • Test on nanosp
    • Test on nanox

[1.0.1] - 2023-03-21

Added

  • Clone app-recovery-check and rename to app-sskr-check
  • Add SSKR (bc-sskr and bc-shamir) to app-sskr-check
  • Generate SSKR shares from BIP39 mnemonic phrase
    • Write BIP39 to SSKR functionality
    • Add SSKR flow to the Check BIP39 menu
    • Test with 12-word BIP39 phrases
    • Test with 18-word BIP39 phrases
    • Test with 24-word BIP39 phrases
    • Test on nanos
    • Test on nanosp
    • Test on nanox