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trezor-firmware/core/CHANGELOG.md
JoeGruff e3ea32a986 multi: Add decred staking. 
Add two new input and four output script types.

Decred ticket purchases consist of a stake submission, op returns, and
change addresses. Although change addresses are allowed by consensus,
they are no longer used in practice and so have been given the
restrictions of a null pubkey and no value. Stake scripts are almost
identical to p2pkh or p2sh except for an extra opcode in front. Inputs
are currently only used in the form of one input three outputs with the
first output, or stake submission, paying to a public key hash, or with
two inputs and five outputs with the stake submission paying to a
multisig script hash. The op returns are directed to the user in the
case of one and the voting service provider and user in the case of two.

One of the sstx commitment for a ticket must pay back to the trezor
wallet. This is checked and an error is thrown if we don't find the
expected public key hash.

Because this adds the ability to create new types of outputs once the
ticket votes, two new input script types are also needed. A successful
vote will lead to a stake generation script that must be spent, and an
unsuccessful vote will lead to a revocation script that must be spent.
If we allowed stake change scripts to have a valid pubkey, that too
would require another op code, but we disallow those for output.
2021-03-17 12:16:08 +01:00

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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](https://keepachangelog.com/en/1.0.0/).
## 2.4.0 [unreleased]
### Added
- Locking the device by holding finger on the homescreen for 2.5 seconds. [#1404]
- Public key to ECDHSessionKey. [#1518]
- Decred staking. [#1249]
### Changed
### Deprecated
### Removed
### Fixed
### Security
## 2.3.6 [15th February 2021]
### Added
- Compatibility paths for Unchained Capital. [#1467]
## 2.3.5 [10th February 2021]
### Added
- CoinJoin preauthorization and signing flow. [#1053]
- Value of the `safety-checks` setting to the `Features` message. [#1193]
- ERC20 tokens show contract address for confirmation. Unknown ERC20 tokens show wei amount. [#800]
- Replacement transaction signing for replace-by-fee and PayJoin. [#1292]
- Support for Output Descriptors export. [#1363]
- Paginated display for signing/verifying long messages. [#1271]
- Show Ypub/Zpub correctly for multisig GetAddress. [#1415]
- Show amounts in mBTC, uBTC and sat denominations. [#1369]
### Changed
- The `safety-checks` setting gained new possible value `PromptTemporarily` which overrides safety checks until device reboot. [#1133]
- Protobuf codec now enforces `required` fields and pre-fills default values. [#379]
- `TxAck` messages are now decoded into "polymorphic" subtypes instead of the common `TxAck` type.
- Bump nanopb dependency to 0.4.3. [#1105]
- BIP-32 paths must now match a pre-defined path schema to be considered valid. [#1184]
- Minimum auto-lock delay to 1 minute. The former value of 10 seconds still applies for debug builds. [#1351]
- It is again possible to sign for Ethereum clones that are not officially supported. [#1335]
- Bump nanopb dependency to 0.4.4. [#1402]
- Automatic breaking text on whitespace. [#1384]
- Introduced limit of 32 characters for device label. [#1399]
### Deprecated
### Removed
- PIVX support
### Fixed
- Path warning is not shown on `GetAddress(show_display=False)` call. [#1206]
- Settings are also erased from RAM when device is wiped. [#1322]
### Security
## 2.3.4 [7th October 2020]
### Added
- Support for the upcoming Monero hard fork. [#1246]
### Changed
### Deprecated
### Removed
### Fixed
### Security
## 2.3.3 [2nd September 2020]
### Added
- Running the frozen version of the emulator doesn't need arguments. [#1115]
- XVG support. [#1165]
- Hard limit on transaction fees. Can be disabled using `safety-checks`. [#1087]
### Changed
- Print inverted question mark for non-printable characters.
- Remove pre-fill bar from text rendering functions. [#1173]
- Display coin name when signing or verifying messages. [#1159]
- Allow spending coins from Bitcoin paths if the coin has implemented strong replay protection via `SIGHASH_FORKID`. [#1188]
### Deprecated
### Removed
- Remove ETP, GIN, PTC, ZEL support.
- Drop support for signing Zcash v3 transactions. [#982]
### Fixed
- CRW addresses are properly generated. [#1139]
- Fix boot loop after uploading invalid homescreen. [#1118]
- Allow 49/x not 49/x' for Casa. [#1190]
- Make sure Homescreen is properly initialized. [#1095]
### Security
- Show non-empty passphrase on device when it was entered on host.
- Show warning if nLockTime is set but ineffective due to all nSequence values being 0xffffffff.
## 2.3.2 [5th August 2020]
### Added
- Soft lock. [#958]
- Auto lock. [#1027]
- Dedicated `initialized` field in storage.
- Support EXTERNAL transaction inputs with a SLIP-0019 proof of ownership. [#1052]
- Support pre-signed EXTERNAL transaction inputs.
- Support multiple change-outputs. [#1098]
- New option `safety-checks` allows overriding "forbidden key path" errors. [#1126]
- Support for Cardano Shelley. [#948]
### Changed
- `Features.pin_cached` renamed to `unlocked`.
- Forbid all settings if the device is not yet initialized. [#1056]
- Rewrite USB codec and Protobuf decoder to be more memory-efficient. [#1089]
- Allow compatibility namespaces for Casa and Green Address.
### Deprecated
- Deprecate `overwintered` field in `SignTx` and `TxAck`.
### Removed
- Generated protobuf classes now do not contain deprecated fields.
### Fixed
- Fix cancel icon in PIN dialog. [#1042]
- Fix repaint bug in QR code rendering. [#1067]
- Fix QR code overlapping in Monero address. monero-gui#2960, [#1074]
- Re-introduce ability to spend pre-Overwinter UTXO on Zcash-like coins. [#1030]
## 2.3.1 [June 2020]
### Changed
- Refactor Bitcoin signing
- Refactor Keychain into a decorator
### Security
- Stream previous tx also for Segwit inputs
## 2.3.0 [April 2020]
### Added
- Cache up to 10 sessions (passphrases)
- SD card protection
- Show xpubs with multisig get_address
- Introduce FatFS (version 0.14)
- Support Ed25519 in FIDO2
### Changed
- Passphrase redesign
- Upgrade MicroPython to 1.12
### Fixed
- Properly limit passphrase to 50 bytes and not 50 characters
- Monero: add confirmation dialog for unlock_time
## 2.2.0 [January 2020]
### Added
- Add feature to retrieve the next U2F counter.
- Wipe code.
- Add screen for time bounds in Stellar.
### Fixed
- Fix continuous display blinking with Android in U2F.
- U2F UX improvements.
### Changed
- Rework Recovery persistence internally.
### Removed
- Remove unused ButtonRequest.data field.
- Disallow changing of settings via dry-run recovery.
## 2.1.8 [November 2019]
### Added
- Support Tezos 005-BABYLON hardfork.
- Show XPUBs in GetAddress for multisig.
### Security
- Security improvements.
## 2.1.7 [October 2019]
### Fixed
- Fix low memory issue.
## 2.1.6 [October 2019]
### Added
- Super Shamir.
- FIDO2.
- FIDO2 credential management via trezorctl.
- BackupType in Features.
### Changed
- Refactor Shamir related codebase.
### Fixed
- Fix storage keys module visibility bug (6ad329) introduced in 2.1.3 (46e4c0) which was breaking upgrades.
## 2.1.5 [September 2019]
### Added
- Binance Coin support.
- Introduce Features.Capabilities.
### Fixed
- Fix for sluggish U2F authentication when using Shamir.
- Fix UI for Shamir with 33 words.
- Fix Wanchain signing.
## 2.1.4 [August 2019 hotfix]
### Fixed
- Shamir Backup reset device hotfix.
## 2.1.3 [August 2019]
### Added
- Shamir Backup with Recovery persistence.
### Fixed
- Touchscreen freeze fix.
- Fix display of non-divisible OMNI amounts.
## 2.1.2 [unreleased]
### Added
- Shamir Backup feature preview.
## 2.1.1 [June 2019]
### Added
- EOS support.
- Set screen rotation via user setting.
- Display non-zero locktime values.
### Changed
- Don't rotate the screen via swipe gesture.
- More strict path validations.
### Fixed
- Hotfix for touchscreen freeze.
- Monero UI fixes.
- Speed and memory optimizations.
## 2.1.0 [March 2019]
### Added
- New coins: ATS, AXE, FLO, GIN, KMD, NIX, PIVX, REOSC, XPM, XSN, ZCL.
- New ETH tokens.
### Fixed
- Ripple, Stellar, Cardano and NEM fixes.
### Changed
- Included bootloader 2.0.3.
### Security
- Security improvements.
- Upgraded to new storage format.
## 2.0.10 [December 2018]
### Added
- Add support for OMNI layer: OMNI/MAID/USDT.
- Add support for new coins: BTX, CPC, GAME, RVN.
- Add support for new Ethereum tokens.
### Changed
- Included bootloader 2.0.2.
### Fixed
- Fix Monero payment ID computation.
- Fix issue with touch screen and flickering.
## 2.0.9 [November 2018]
### Fixed
- Small Monero and Segwit bugfixes.
## 2.0.8 [October 2018]
### Added
- Monero support.
- Cardano support.
- Stellar support.
- Ripple support.
- Tezos support.
- Decred support.
- Groestlcoin support.
- Zencash support.
- Zcash sapling hardfork support.
- Implemented seedless setup.
## 2.0.7 [June 2018]
### Added
- Bitcoin Cash cashaddr support.
- Zcash Overwinter hardfork support.
- NEM support.
- Lisk support.
- Show warning on home screen if PIN is not set.
- Support for new coins (BTCP, FUJI, VTC, VIA, XZC).
- Support for new Ethereum networks (EOSC, ETHS, ELLA, CTL, EGEM, WAN).
- Support for 500+ new Ethereum tokens.
## 2.0.6 [March 2018]
### Added
- Add special characters to passphrase keyboard.
### Fixed
- Fix layout for Ethereum transactions.
- Fix public key generation for SSH and GPG.
## 2.0.5 [March 2018]
### Added
- First public release.
[#379]: https://github.com/trezor/trezor-firmware/issues/379
[#800]: https://github.com/trezor/trezor-firmware/issues/800
[#948]: https://github.com/trezor/trezor-firmware/issues/948
[#958]: https://github.com/trezor/trezor-firmware/issues/958
[#982]: https://github.com/trezor/trezor-firmware/issues/982
[#1027]: https://github.com/trezor/trezor-firmware/issues/1027
[#1030]: https://github.com/trezor/trezor-firmware/issues/1030
[#1042]: https://github.com/trezor/trezor-firmware/issues/1042
[#1052]: https://github.com/trezor/trezor-firmware/issues/1052
[#1053]: https://github.com/trezor/trezor-firmware/issues/1053
[#1056]: https://github.com/trezor/trezor-firmware/issues/1056
[#1067]: https://github.com/trezor/trezor-firmware/issues/1067
[#1074]: https://github.com/trezor/trezor-firmware/issues/1074
[#1087]: https://github.com/trezor/trezor-firmware/issues/1087
[#1089]: https://github.com/trezor/trezor-firmware/issues/1089
[#1095]: https://github.com/trezor/trezor-firmware/issues/1095
[#1098]: https://github.com/trezor/trezor-firmware/issues/1098
[#1105]: https://github.com/trezor/trezor-firmware/issues/1105
[#1115]: https://github.com/trezor/trezor-firmware/issues/1115
[#1118]: https://github.com/trezor/trezor-firmware/issues/1118
[#1126]: https://github.com/trezor/trezor-firmware/issues/1126
[#1133]: https://github.com/trezor/trezor-firmware/issues/1133
[#1139]: https://github.com/trezor/trezor-firmware/issues/1139
[#1159]: https://github.com/trezor/trezor-firmware/issues/1159
[#1165]: https://github.com/trezor/trezor-firmware/pull/1165
[#1173]: https://github.com/trezor/trezor-firmware/pull/1173
[#1184]: https://github.com/trezor/trezor-firmware/issues/1184
[#1188]: https://github.com/trezor/trezor-firmware/issues/1188
[#1190]: https://github.com/trezor/trezor-firmware/issues/1190
[#1193]: https://github.com/trezor/trezor-firmware/issues/1193
[#1206]: https://github.com/trezor/trezor-firmware/issues/1206
[#1246]: https://github.com/trezor/trezor-firmware/issues/1246
[#1249]: https://github.com/trezor/trezor-firmware/issues/1249
[#1271]: https://github.com/trezor/trezor-firmware/issues/1271
[#1292]: https://github.com/trezor/trezor-firmware/issues/1292
[#1322]: https://github.com/trezor/trezor-firmware/issues/1322
[#1335]: https://github.com/trezor/trezor-firmware/issues/1335
[#1351]: https://github.com/trezor/trezor-firmware/issues/1351
[#1363]: https://github.com/trezor/trezor-firmware/pull/1363
[#1369]: https://github.com/trezor/trezor-firmware/pull/1369
[#1384]: https://github.com/trezor/trezor-firmware/issues/1384
[#1399]: https://github.com/trezor/trezor-firmware/issues/1399
[#1402]: https://github.com/trezor/trezor-firmware/pull/1402
[#1404]: https://github.com/trezor/trezor-firmware/issues/1404
[#1415]: https://github.com/trezor/trezor-firmware/pull/1415
[#1467]: https://github.com/trezor/trezor-firmware/issues/1467
[#1518]: https://github.com/trezor/trezor-firmware/pull/1518
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