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Use extended public key to derive ledger addresses #2246

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merged 11 commits into from
Nov 7, 2023
Merged

Use extended public key to derive ledger addresses #2246

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a1d9c43
use extended public key to derive ledger addresses
felipemadero Nov 2, 2023
f1436b0
lint
felipemadero Nov 2, 2023
b890036
point to ledger-avalanche dev
felipemadero Nov 2, 2023
68de888
Merge branch 'dev' into use-ledger-extended-public-key-dev
felipemadero Nov 2, 2023
eae25b3
Merge branch 'dev' into use-ledger-extended-public-key-dev
felipemadero Nov 3, 2023
37d1952
Update utils/crypto/ledger/ledger.go
felipemadero Nov 3, 2023
21d522a
fix suggestion
felipemadero Nov 3, 2023
2c05804
Cleanup go.mod
StephenButtolph Nov 3, 2023
65ca017
Update utils/crypto/ledger/ledger.go
felipemadero Nov 6, 2023
33a8805
address PR comments
felipemadero Nov 6, 2023
d4fb34f
Merge branch 'dev' into use-ledger-extended-public-key-dev
felipemadero Nov 6, 2023
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11 changes: 7 additions & 4 deletions go.mod
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ require (
github.com/Microsoft/go-winio v0.5.2
github.com/NYTimes/gziphandler v1.1.1
github.com/ava-labs/coreth v0.12.8-rc.1
github.com/ava-labs/ledger-avalanche/go v0.0.0-20230105152938-00a24d05a8c7
github.com/ava-labs/ledger-avalanche/go v0.0.0-20231102202641-ae2ebdaeac34
github.com/btcsuite/btcd/btcutil v1.1.3
github.com/cockroachdb/pebble v0.0.0-20230209160836-829675f94811
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.1.0
Expand Down Expand Up @@ -44,10 +44,11 @@ require (
github.com/spf13/cobra v1.0.0
github.com/spf13/pflag v1.0.5
github.com/spf13/viper v1.12.0
github.com/stretchr/testify v1.8.1
github.com/stretchr/testify v1.8.4
github.com/supranational/blst v0.3.11
github.com/syndtr/goleveldb v1.0.1-0.20220614013038-64ee5596c38a
github.com/thepudds/fzgen v0.4.2
github.com/tyler-smith/go-bip32 v1.0.0
go.opentelemetry.io/otel v1.11.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.11.0
go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.11.0
Expand All @@ -72,6 +73,8 @@ require (

require (
github.com/BurntSushi/toml v1.2.1 // indirect
github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e // indirect
github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec // indirect
github.com/VictoriaMetrics/fastcache v1.10.0 // indirect
github.com/benbjohnson/clock v1.3.0 // indirect
github.com/beorn7/perks v1.0.1 // indirect
Expand Down Expand Up @@ -138,8 +141,8 @@ require (
github.com/urfave/cli/v2 v2.17.2-0.20221006022127-8f469abc00aa // indirect
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
github.com/yusufpapurcu/wmi v1.2.2 // indirect
github.com/zondax/hid v0.9.1 // indirect
github.com/zondax/ledger-go v0.14.1 // indirect
github.com/zondax/hid v0.9.2 // indirect
github.com/zondax/ledger-go v0.14.3 // indirect
go.opentelemetry.io/otel/exporters/otlp/internal/retry v1.11.0 // indirect
go.opentelemetry.io/proto/otlp v0.19.0 // indirect
go.uber.org/atomic v1.10.0 // indirect
Expand Down
29 changes: 20 additions & 9 deletions go.sum
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@ github.com/CloudyKit/fastprinter v0.0.0-20200109182630-33d98a066a53/go.mod h1:+3
github.com/CloudyKit/jet/v3 v3.0.0/go.mod h1:HKQPgSJmdK8hdoAbKUUWajkHyHo4RaU5rMdUywE7VMo=
github.com/DataDog/zstd v1.5.2 h1:vUG4lAyuPCXO0TLbXvPv7EB7cNK1QV/luu55UHLrrn8=
github.com/DataDog/zstd v1.5.2/go.mod h1:g4AWEaM3yOg3HYfnJ3YIawPnVdXJh9QME85blwSAmyw=
github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e h1:ahyvB3q25YnZWly5Gq1ekg6jcmWaGj/vG/MhF4aisoc=
github.com/FactomProject/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:kGUqhHd//musdITWjFvNTHn90WG9bMLBEPQZ17Cmlpw=
github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec h1:1Qb69mGp/UtRPn422BH4/Y4Q3SLUrD9KHuDkm8iodFc=
github.com/FactomProject/btcutilecc v0.0.0-20130527213604-d3a63a5752ec/go.mod h1:CD8UlnlLDiqb36L110uqiP2iSflVjx9g/3U9hCI4q2U=
github.com/Joker/hpp v1.0.0/go.mod h1:8x5n+M1Hp5hC0g8okX3sR3vFQwynaX/UgSOM9MeBKzY=
github.com/Microsoft/go-winio v0.5.2 h1:a9IhgEQBCUEk6QCdml9CiJGhAws+YwffDHEMp1VMrpA=
github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
Expand All @@ -64,8 +68,8 @@ github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kd
github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
github.com/ava-labs/coreth v0.12.8-rc.1 h1:tvJcxQTQzxIQqx8TnrxdyMhZYbdsMaiy6AEiOyjvaa4=
github.com/ava-labs/coreth v0.12.8-rc.1/go.mod h1:GBH5SxHZdScSp95IijDs9+Gxw/QDIWvfoLKiJMNYLsE=
github.com/ava-labs/ledger-avalanche/go v0.0.0-20230105152938-00a24d05a8c7 h1:EdxD90j5sClfL5Ngpz2TlnbnkNYdFPDXa0jDOjam65c=
github.com/ava-labs/ledger-avalanche/go v0.0.0-20230105152938-00a24d05a8c7/go.mod h1:XhiXSrh90sHUbkERzaxEftCmUz53eCijshDLZ4fByVM=
github.com/ava-labs/ledger-avalanche/go v0.0.0-20231102202641-ae2ebdaeac34 h1:mg9Uw6oZFJKytJxgxnl3uxZOs/SB8CVHg6Io4Tf99Zc=
github.com/ava-labs/ledger-avalanche/go v0.0.0-20231102202641-ae2ebdaeac34/go.mod h1:pJxaT9bUgeRNVmNRgtCHb7sFDIRKy7CzTQVi8gGNT6g=
github.com/aymerick/raymond v2.0.3-0.20180322193309-b565731e1464+incompatible/go.mod h1:osfaiScAUVup+UC9Nfq76eWqDhXlp+4UYaA8uhTBO6g=
github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
github.com/benbjohnson/clock v1.3.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
Expand Down Expand Up @@ -113,6 +117,8 @@ github.com/chzyer/readline v1.5.0/go.mod h1:x22KAscuvRqlLoK9CsoYsmxoXZMMFVyOl86c
github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
github.com/chzyer/test v0.0.0-20210722231415-061457976a23/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/cmars/basen v0.0.0-20150613233007-fe3947df716e h1:0XBUw73chJ1VYSsfvcPvVT7auykAJce9FpRr10L6Qhw=
github.com/cmars/basen v0.0.0-20150613233007-fe3947df716e/go.mod h1:P13beTBKr5Q18lJe1rIoLUqjM+CB1zYrRg44ZqGuQSA=
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
github.com/cncf/udpa/go v0.0.0-20200629203442-efcf912fb354/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
Expand Down Expand Up @@ -573,8 +579,8 @@ github.com/status-im/keycard-go v0.2.0/go.mod h1:wlp8ZLbsmrF6g6WjugPAx+IzoLrkdf9
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
github.com/stretchr/testify v0.0.0-20161117074351-18a02ba4a312/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.1.5-0.20170601210322-f6abca593680/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
Expand All @@ -583,8 +589,8 @@ github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/
github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.2/go.mod h1:R6va5+xMeoiuVRoj+gSkQ7d3FALtqAAGI1FQKckRals=
github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
github.com/subosito/gotenv v1.3.0 h1:mjC+YW8QpAdXibNi+vNWgzmgBH4+5l5dCXv8cNysBLI=
github.com/subosito/gotenv v1.3.0/go.mod h1:YzJjq/33h7nrwdY+iHMhEOEEbW0ovIz0tB6t6PwAXzs=
github.com/supranational/blst v0.3.11 h1:LyU6FolezeWAhvQk0k6O/d49jqgO52MSDDfYgbeoEm4=
Expand All @@ -599,6 +605,8 @@ github.com/tklauser/go-sysconf v0.3.5/go.mod h1:MkWzOF4RMCshBAMXuhXJs64Rte09mITn
github.com/tklauser/numcpus v0.2.2 h1:oyhllyrScuYI6g+h/zUvNXNp1wy7x8qQy3t/piefldA=
github.com/tklauser/numcpus v0.2.2/go.mod h1:x3qojaO3uyYt0i56EW/VUYs7uBvdl2fkfZFu0T9wgjM=
github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
github.com/tyler-smith/go-bip32 v1.0.0 h1:sDR9juArbUgX+bO/iblgZnMPeWY1KZMUC2AFUJdv5KE=
github.com/tyler-smith/go-bip32 v1.0.0/go.mod h1:onot+eHknzV4BVPwrzqY5OoVpyCvnwD7lMawL5aQupE=
github.com/tyler-smith/go-bip39 v1.1.0 h1:5eUemwrMargf3BSLRRCalXT93Ns6pQJIjYQN2nyfOP8=
github.com/tyler-smith/go-bip39 v1.1.0/go.mod h1:gUYDtqQw1JS3ZJ8UWVcGTGqqr6YIN3CWg+kkNaLt55U=
github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=
Expand Down Expand Up @@ -632,10 +640,10 @@ github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
github.com/yusufpapurcu/wmi v1.2.2 h1:KBNDSne4vP5mbSWnJbO+51IMOXJB67QiYCSBrubbPRg=
github.com/yusufpapurcu/wmi v1.2.2/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
github.com/zondax/hid v0.9.1 h1:gQe66rtmyZ8VeGFcOpbuH3r7erYtNEAezCAYu8LdkJo=
github.com/zondax/hid v0.9.1/go.mod h1:l5wttcP0jwtdLjqjMMWFVEE7d1zO0jvSPA9OPZxWpEM=
github.com/zondax/ledger-go v0.14.1 h1:Pip65OOl4iJ84WTpA4BKChvOufMhhbxED3BaihoZN4c=
github.com/zondax/ledger-go v0.14.1/go.mod h1:fZ3Dqg6qcdXWSOJFKMG8GCTnD7slO/RL2feOQv8K320=
github.com/zondax/hid v0.9.2 h1:WCJFnEDMiqGF64nlZz28E9qLVZ0KSJ7xpc5DLEyma2U=
github.com/zondax/hid v0.9.2/go.mod h1:l5wttcP0jwtdLjqjMMWFVEE7d1zO0jvSPA9OPZxWpEM=
github.com/zondax/ledger-go v0.14.3 h1:wEpJt2CEcBJ428md/5MgSLsXLBos98sBOyxNmCjfUCw=
github.com/zondax/ledger-go v0.14.3/go.mod h1:IKKaoxupuB43g4NxeQmbLXv7T9AlQyie1UpHb342ycI=
go.etcd.io/bbolt v1.3.2/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
Expand Down Expand Up @@ -674,6 +682,7 @@ go.uber.org/multierr v1.8.0/go.mod h1:7EAYxJLBy9rStEaz58O2t4Uvip6FSURkq8/ppBp95a
go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
go.uber.org/zap v1.24.0 h1:FiJd5l1UOLj0wCgbSE0rwwXHzEdAZS6hiiSnxJN/D60=
go.uber.org/zap v1.24.0/go.mod h1:2kMP+WWQ8aoFoedH3T2sq6iJ2yDWpHbP0f6MQbS9Gkg=
golang.org/x/crypto v0.0.0-20170613210332-850760c427c5/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20181203042331-505ab145d0a9/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
Expand Down Expand Up @@ -1107,6 +1116,8 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
launchpad.net/gocheck v0.0.0-20140225173054-000000000087 h1:Izowp2XBH6Ya6rv+hqbceQyw/gSGoXfH/UPoTGduL54=
launchpad.net/gocheck v0.0.0-20140225173054-000000000087/go.mod h1:hj7XX3B/0A+80Vse0e+BUHsHMTEhd0O4cpUHr/e/BUM=
rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
27 changes: 22 additions & 5 deletions utils/crypto/ledger/ledger.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ import (
"fmt"

ledger "github.com/ava-labs/ledger-avalanche/go"
bip32 "github.com/tyler-smith/go-bip32"
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"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/utils/crypto/keychain"
Expand All @@ -26,6 +27,7 @@ var _ keychain.Ledger = (*Ledger)(nil)
// provides Avalanche-specific access.
type Ledger struct {
device *ledger.LedgerAvalanche
epk *bip32.Key
}

func New() (keychain.Ledger, error) {
Expand All @@ -40,21 +42,36 @@ func addressPath(index uint32) string {
}

func (l *Ledger) Address(hrp string, addressIndex uint32) (ids.ShortID, error) {
_, hash, err := l.device.GetPubKey(addressPath(addressIndex), true, hrp, "")
resp, err := l.device.GetPubKey(addressPath(addressIndex), true, hrp, "")
if err != nil {
return ids.ShortEmpty, err
}
return ids.ToShortID(hash)
return ids.ToShortID(resp.Hash)
}

func (l *Ledger) Addresses(addressIndices []uint32) ([]ids.ShortID, error) {
if l.epk == nil {
pk, chainCode, err := l.device.GetExtPubKey(rootPath, false, "", "")
if err != nil {
return nil, err
}
l.epk = &bip32.Key{
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Key: pk,
ChainCode: chainCode,
}
}
// get first derivation of 0/v path
child0, err := l.epk.NewChildKey(0)
if err != nil {
return nil, err
}
addresses := make([]ids.ShortID, len(addressIndices))
for i, v := range addressIndices {
_, hash, err := l.device.GetPubKey(addressPath(v), false, "", "")
for i, child1Index := range addressIndices {
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child1, err := child0.NewChildKey(child1Index)
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if err != nil {
return nil, err
}
copy(addresses[i][:], hash)
copy(addresses[i][:], hashing.PubkeyBytesToAddress(child1.Key))
}
return addresses, nil
}
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