accounts, core, internal, node: Add support for smartcard wallets

5 files changed, 2390 insertions, 0 deletions

diff --git a/vendor/github.com/tyler-smith/go-bip39/LICENSE b/vendor/github.com/tyler-smith/go-bip39/LICENSE
new file mode 100644
index 000000000..44de214f0
--- /dev/null
+++ b/vendor/github.com/tyler-smith/go-bip39/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Tyler Smith
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/github.com/tyler-smith/go-bip39/README.md b/vendor/github.com/tyler-smith/go-bip39/README.md
new file mode 100644
index 000000000..11e62af1c
--- /dev/null
+++ b/vendor/github.com/tyler-smith/go-bip39/README.md
@@ -0,0 +1,38 @@
+# go-bip39
+
+A golang implementation of the BIP0039 spec for mnemonic seeds
+
+
+## Credits
+
+English wordlist and test vectors are from the standard Python BIP0039 implementation
+from the Trezor guys: [https://github.com/trezor/python-mnemonic](https://github.com/trezor/python-mnemonic)
+
+## Example
+
+```go
+package main
+
+import (
+  "github.com/tyler-smith/go-bip39"
+  "github.com/tyler-smith/go-bip32"
+  "fmt"
+)
+
+func main(){
+  // Generate a mnemonic for memorization or user-friendly seeds
+  entropy, _ := bip39.NewEntropy(256)
+  mnemonic, _ := bip39.NewMnemonic(entropy)
+
+  // Generate a Bip32 HD wallet for the mnemonic and a user supplied password
+  seed := bip39.NewSeed(mnemonic, "Secret Passphrase")
+
+  masterKey, _ := bip32.NewMasterKey(seed)
+  publicKey := masterKey.PublicKey()
+
+  // Display mnemonic and keys
+  fmt.Println("Mnemonic: ", mnemonic)
+  fmt.Println("Master private key: ", masterKey)
+  fmt.Println("Master public key: ", publicKey)
+}
+```
diff --git a/vendor/github.com/tyler-smith/go-bip39/bip39.go b/vendor/github.com/tyler-smith/go-bip39/bip39.go
new file mode 100644
index 000000000..4d281ba46
--- /dev/null
+++ b/vendor/github.com/tyler-smith/go-bip39/bip39.go
@@ -0,0 +1,249 @@
+package bip39
+
+import (
+	"crypto/rand"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"math/big"
+	"strings"
+
+	"golang.org/x/crypto/pbkdf2"
+)
+
+// Some bitwise operands for working with big.Ints
+var (
+	Last11BitsMask          = big.NewInt(2047)
+	RightShift11BitsDivider = big.NewInt(2048)
+	BigOne                  = big.NewInt(1)
+	BigTwo                  = big.NewInt(2)
+)
+
+// NewEntropy will create random entropy bytes
+// so long as the requested size bitSize is an appropriate size.
+func NewEntropy(bitSize int) ([]byte, error) {
+	err := validateEntropyBitSize(bitSize)
+	if err != nil {
+		return nil, err
+	}
+
+	entropy := make([]byte, bitSize/8)
+	_, err = rand.Read(entropy)
+	return entropy, err
+}
+
+// NewMnemonic will return a string consisting of the mnemonic words for
+// the given entropy.
+// If the provide entropy is invalid, an error will be returned.
+func NewMnemonic(entropy []byte) (string, error) {
+	// Compute some lengths for convenience
+	entropyBitLength := len(entropy) * 8
+	checksumBitLength := entropyBitLength / 32
+	sentenceLength := (entropyBitLength + checksumBitLength) / 11
+
+	err := validateEntropyBitSize(entropyBitLength)
+	if err != nil {
+		return "", err
+	}
+
+	// Add checksum to entropy
+	entropy = addChecksum(entropy)
+
+	// Break entropy up into sentenceLength chunks of 11 bits
+	// For each word AND mask the rightmost 11 bits and find the word at that index
+	// Then bitshift entropy 11 bits right and repeat
+	// Add to the last empty slot so we can work with LSBs instead of MSB
+
+	// Entropy as an int so we can bitmask without worrying about bytes slices
+	entropyInt := new(big.Int).SetBytes(entropy)
+
+	// Slice to hold words in
+	words := make([]string, sentenceLength)
+
+	// Throw away big int for AND masking
+	word := big.NewInt(0)
+
+	for i := sentenceLength - 1; i >= 0; i-- {
+		// Get 11 right most bits and bitshift 11 to the right for next time
+		word.And(entropyInt, Last11BitsMask)
+		entropyInt.Div(entropyInt, RightShift11BitsDivider)
+
+		// Get the bytes representing the 11 bits as a 2 byte slice
+		wordBytes := padByteSlice(word.Bytes(), 2)
+
+		// Convert bytes to an index and add that word to the list
+		words[i] = WordList[binary.BigEndian.Uint16(wordBytes)]
+	}
+
+	return strings.Join(words, " "), nil
+}
+
+// MnemonicToByteArray takes a mnemonic string and turns it into a byte array
+// suitable for creating another mnemonic.
+// An error is returned if the mnemonic is invalid.
+// FIXME
+// This does not work for all values in
+// the test vectors.  Namely
+// Vectors 0, 4, and 8.
+// This is not really important because BIP39 doesnt really define a conversion
+// from string to bytes.
+func MnemonicToByteArray(mnemonic string) ([]byte, error) {
+	if IsMnemonicValid(mnemonic) == false {
+		return nil, fmt.Errorf("Invalid mnemonic")
+	}
+	mnemonicSlice := strings.Split(mnemonic, " ")
+
+	bitSize := len(mnemonicSlice) * 11
+	err := validateEntropyWithChecksumBitSize(bitSize)
+	if err != nil {
+		return nil, err
+	}
+	checksumSize := bitSize % 32
+
+	b := big.NewInt(0)
+	modulo := big.NewInt(2048)
+	for _, v := range mnemonicSlice {
+		index, found := ReverseWordMap[v]
+		if found == false {
+			return nil, fmt.Errorf("Word `%v` not found in reverse map", v)
+		}
+		add := big.NewInt(int64(index))
+		b = b.Mul(b, modulo)
+		b = b.Add(b, add)
+	}
+	hex := b.Bytes()
+	checksumModulo := big.NewInt(0).Exp(big.NewInt(2), big.NewInt(int64(checksumSize)), nil)
+	entropy, _ := big.NewInt(0).DivMod(b, checksumModulo, big.NewInt(0))
+
+	entropyHex := entropy.Bytes()
+
+	byteSize := bitSize/8 + 1
+	if len(hex) != byteSize {
+		tmp := make([]byte, byteSize)
+		diff := byteSize - len(hex)
+		for i := 0; i < len(hex); i++ {
+			tmp[i+diff] = hex[i]
+		}
+		hex = tmp
+	}
+
+	validationHex := addChecksum(entropyHex)
+	if len(validationHex) != byteSize {
+		tmp2 := make([]byte, byteSize)
+		diff2 := byteSize - len(validationHex)
+		for i := 0; i < len(validationHex); i++ {
+			tmp2[i+diff2] = validationHex[i]
+		}
+		validationHex = tmp2
+	}
+
+	if len(hex) != len(validationHex) {
+		panic("[]byte len mismatch - it shouldn't happen")
+	}
+	for i := range validationHex {
+		if hex[i] != validationHex[i] {
+			return nil, fmt.Errorf("Invalid byte at position %v", i)
+		}
+	}
+	return hex, nil
+}
+
+// NewSeedWithErrorChecking creates a hashed seed output given the mnemonic string and a password.
+// An error is returned if the mnemonic is not convertible to a byte array.
+func NewSeedWithErrorChecking(mnemonic string, password string) ([]byte, error) {
+	_, err := MnemonicToByteArray(mnemonic)
+	if err != nil {
+		return nil, err
+	}
+	return NewSeed(mnemonic, password), nil
+}
+
+// NewSeed creates a hashed seed output given a provided string and password.
+// No checking is performed to validate that the string provided is a valid mnemonic.
+func NewSeed(mnemonic string, password string) []byte {
+	return pbkdf2.Key([]byte(mnemonic), []byte("mnemonic"+password), 2048, 64, sha512.New)
+}
+
+// Appends to data the first (len(data) / 32)bits of the result of sha256(data)
+// Currently only supports data up to 32 bytes
+func addChecksum(data []byte) []byte {
+	// Get first byte of sha256
+	hasher := sha256.New()
+	hasher.Write(data)
+	hash := hasher.Sum(nil)
+	firstChecksumByte := hash[0]
+
+	// len() is in bytes so we divide by 4
+	checksumBitLength := uint(len(data) / 4)
+
+	// For each bit of check sum we want we shift the data one the left
+	// and then set the (new) right most bit equal to checksum bit at that index
+	// staring from the left
+	dataBigInt := new(big.Int).SetBytes(data)
+	for i := uint(0); i < checksumBitLength; i++ {
+		// Bitshift 1 left
+		dataBigInt.Mul(dataBigInt, BigTwo)
+
+		// Set rightmost bit if leftmost checksum bit is set
+		if uint8(firstChecksumByte&(1<<(7-i))) > 0 {
+			dataBigInt.Or(dataBigInt, BigOne)
+		}
+	}
+
+	return dataBigInt.Bytes()
+}
+
+func padByteSlice(slice []byte, length int) []byte {
+	newSlice := make([]byte, length-len(slice))
+	return append(newSlice, slice...)
+}
+
+func validateEntropyBitSize(bitSize int) error {
+	if (bitSize%32) != 0 || bitSize < 128 || bitSize > 256 {
+		return errors.New("Entropy length must be [128, 256] and a multiple of 32")
+	}
+	return nil
+}
+
+func validateEntropyWithChecksumBitSize(bitSize int) error {
+	if (bitSize != 128+4) && (bitSize != 160+5) && (bitSize != 192+6) && (bitSize != 224+7) && (bitSize != 256+8) {
+		return fmt.Errorf("Wrong entropy + checksum size - expected %v, got %v", int((bitSize-bitSize%32)+(bitSize-bitSize%32)/32), bitSize)
+	}
+	return nil
+}
+
+// IsMnemonicValid attempts to verify that the provided mnemonic is valid.
+// Validity is determined by both the number of words being appropriate,
+// and that all the words in the mnemonic are present in the word list.
+func IsMnemonicValid(mnemonic string) bool {
+	// Create a list of all the words in the mnemonic sentence
+	words := strings.Fields(mnemonic)
+
+	//Get num of words
+	numOfWords := len(words)
+
+	// The number of words should be 12, 15, 18, 21 or 24
+	if numOfWords%3 != 0 || numOfWords < 12 || numOfWords > 24 {
+		return false
+	}
+
+	// Check if all words belong in the wordlist
+	for i := 0; i < numOfWords; i++ {
+		if !contains(WordList, words[i]) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func contains(s []string, e string) bool {
+	for _, a := range s {
+		if a == e {
+			return true
+		}
+	}
+	return false
+}
diff --git a/vendor/github.com/tyler-smith/go-bip39/coverage.txt b/vendor/github.com/tyler-smith/go-bip39/coverage.txt
new file mode 100644
index 000000000..7b1ce02f1
--- /dev/null
+++ b/vendor/github.com/tyler-smith/go-bip39/coverage.txt
@@ -0,0 +1,15 @@
+
+github.com/CrowBits/go-bip39/bip39.go	 addChecksum				 100.00% (11/11)
+github.com/CrowBits/go-bip39/bip39.go	 IsMnemonicValid			 100.00% (8/8)
+github.com/CrowBits/go-bip39/bip39.go	 NewEntropy				 100.00% (6/6)
+github.com/CrowBits/go-bip39/bip39.go	 contains				 100.00% (4/4)
+github.com/CrowBits/go-bip39/bip39.go	 NewSeedWithErrorChecking		 100.00% (4/4)
+github.com/CrowBits/go-bip39/bip39.go	 validateEntropyBitSize			 100.00% (3/3)
+github.com/CrowBits/go-bip39/bip39.go	 validateEntropyWithChecksumBitSize	 100.00% (3/3)
+github.com/CrowBits/go-bip39/bip39.go	 padByteSlice				 100.00% (2/2)
+github.com/CrowBits/go-bip39/wordlist.go init					 100.00% (2/2)
+github.com/CrowBits/go-bip39/bip39.go	 NewSeed				 100.00% (1/1)
+github.com/CrowBits/go-bip39/bip39.go	 NewMnemonic				 93.75% (15/16)
+github.com/CrowBits/go-bip39/bip39.go	 MnemonicToByteArray			 90.24% (37/41)
+github.com/CrowBits/go-bip39		 ----------------------------------	 95.05% (96/101)
+
diff --git a/vendor/github.com/tyler-smith/go-bip39/wordlist.go b/vendor/github.com/tyler-smith/go-bip39/wordlist.go
new file mode 100644
index 000000000..aaed291c3
--- /dev/null
+++ b/vendor/github.com/tyler-smith/go-bip39/wordlist.go
@@ -0,0 +1,2067 @@
+package bip39
+
+import (
+	"strings"
+)
+
+// The wordlist to use
+var WordList = EnglishWordList
+
+var ReverseWordMap map[string]int = map[string]int{}
+
+func init() {
+	for i, v := range WordList {
+		ReverseWordMap[v] = i
+	}
+}
+
+// Language-specific wordlists
+var EnglishWordList = strings.Split(englishWordList, "\n")
+var englishWordList = `abandon
+ability
+able
+about
+above
+absent
+absorb
+abstract
+absurd
+abuse
+access
+accident
+account
+accuse
+achieve
+acid
+acoustic
+acquire
+across
+act
+action
+actor
+actress
+actual
+adapt
+add
+addict
+address
+adjust
+admit
+adult
+advance
+advice
+aerobic
+affair
+afford
+afraid
+again
+age
+agent
+agree
+ahead
+aim
+air
+airport
+aisle
+alarm
+album
+alcohol
+alert
+alien
+all
+alley
+allow
+almost
+alone
+alpha
+already
+also
+alter
+always
+amateur
+amazing
+among
+amount
+amused
+analyst
+anchor
+ancient
+anger
+angle
+angry
+animal
+ankle
+announce
+annual
+another
+answer
+antenna
+antique
+anxiety
+any
+apart
+apology
+appear
+apple
+approve
+april
+arch
+arctic
+area
+arena
+argue
+arm
+armed
+armor
+army
+around
+arrange
+arrest
+arrive
+arrow
+art
+artefact
+artist
+artwork
+ask
+aspect
+assault
+asset
+assist
+assume
+asthma
+athlete
+atom
+attack
+attend
+attitude
+attract
+auction
+audit
+august
+aunt
+author
+auto
+autumn
+average
+avocado
+avoid
+awake
+aware
+away
+awesome
+awful
+awkward
+axis
+baby
+bachelor
+bacon
+badge
+bag
+balance
+balcony
+ball
+bamboo
+banana
+banner
+bar
+barely
+bargain
+barrel
+base
+basic
+basket
+battle
+beach
+bean
+beauty
+because
+become
+beef
+before
+begin
+behave
+behind
+believe
+below
+belt
+bench
+benefit
+best
+betray
+better
+between
+beyond
+bicycle
+bid
+bike
+bind
+biology
+bird
+birth
+bitter
+black
+blade
+blame
+blanket
+blast
+bleak
+bless
+blind
+blood
+blossom
+blouse
+blue
+blur
+blush
+board
+boat
+body
+boil
+bomb
+bone
+bonus
+book
+boost
+border
+boring
+borrow
+boss
+bottom
+bounce
+box
+boy
+bracket
+brain
+brand
+brass
+brave
+bread
+breeze
+brick
+bridge
+brief
+bright
+bring
+brisk
+broccoli
+broken
+bronze
+broom
+brother
+brown
+brush
+bubble
+buddy
+budget
+buffalo
+build
+bulb
+bulk
+bullet
+bundle
+bunker
+burden
+burger
+burst
+bus
+business
+busy
+butter
+buyer
+buzz
+cabbage
+cabin
+cable
+cactus
+cage
+cake
+call
+calm
+camera
+camp
+can
+canal
+cancel
+candy
+cannon
+canoe
+canvas
+canyon
+capable
+capital
+captain
+car
+carbon
+card
+cargo
+carpet
+carry
+cart
+case
+cash
+casino
+castle
+casual
+cat
+catalog
+catch
+category
+cattle
+caught
+cause
+caution
+cave
+ceiling
+celery
+cement
+census
+century
+cereal
+certain
+chair
+chalk
+champion
+change
+chaos
+chapter
+charge
+chase
+chat
+cheap
+check
+cheese
+chef
+cherry
+chest
+chicken
+chief
+child
+chimney
+choice
+choose
+chronic
+chuckle
+chunk
+churn
+cigar
+cinnamon
+circle
+citizen
+city
+civil
+claim
+clap
+clarify
+claw
+clay
+clean
+clerk
+clever
+click
+client
+cliff
+climb
+clinic
+clip
+clock
+clog
+close
+cloth
+cloud
+clown
+club
+clump
+cluster
+clutch
+coach
+coast
+coconut
+code
+coffee
+coil
+coin
+collect
+color
+column
+combine
+come
+comfort
+comic
+common
+company
+concert
+conduct
+confirm
+congress
+connect
+consider
+control
+convince
+cook
+cool
+copper
+copy
+coral
+core
+corn
+correct
+cost
+cotton
+couch
+country
+couple
+course
+cousin
+cover
+coyote
+crack
+cradle
+craft
+cram
+crane
+crash
+crater
+crawl
+crazy
+cream
+credit
+creek
+crew
+cricket
+crime
+crisp
+critic
+crop
+cross
+crouch
+crowd
+crucial
+cruel
+cruise
+crumble
+crunch
+crush
+cry
+crystal
+cube
+culture
+cup
+cupboard
+curious
+current
+curtain
+curve
+cushion
+custom
+cute
+cycle
+dad
+damage
+damp
+dance
+danger
+daring
+dash
+daughter
+dawn
+day
+deal
+debate
+debris
+decade
+december
+decide
+decline
+decorate
+decrease
+deer
+defense
+define
+defy
+degree
+delay
+deliver
+demand
+demise
+denial
+dentist
+deny
+depart
+depend
+deposit
+depth
+deputy
+derive
+describe
+desert
+design
+desk
+despair
+destroy
+detail
+detect
+develop
+device
+devote
+diagram
+dial
+diamond
+diary
+dice
+diesel
+diet
+differ
+digital
+dignity
+dilemma
+dinner
+dinosaur
+direct
+dirt
+disagree
+discover
+disease
+dish
+dismiss
+disorder
+display
+distance
+divert
+divide
+divorce
+dizzy
+doctor
+document
+dog
+doll
+dolphin
+domain
+donate
+donkey
+donor
+door
+dose
+double
+dove
+draft
+dragon
+drama
+drastic
+draw
+dream
+dress
+drift
+drill
+drink
+drip
+drive
+drop
+drum
+dry
+duck
+dumb
+dune
+during
+dust
+dutch
+duty
+dwarf
+dynamic
+eager
+eagle
+early
+earn
+earth
+easily
+east
+easy
+echo
+ecology
+economy
+edge
+edit
+educate
+effort
+egg
+eight
+either
+elbow
+elder
+electric
+elegant
+element
+elephant
+elevator
+elite
+else
+embark
+embody
+embrace
+emerge
+emotion
+employ
+empower
+empty
+enable
+enact
+end
+endless
+endorse
+enemy
+energy
+enforce
+engage
+engine
+enhance
+enjoy
+enlist
+enough
+enrich
+enroll
+ensure
+enter
+entire
+entry
+envelope
+episode
+equal
+equip
+era
+erase
+erode
+erosion
+error
+erupt
+escape
+essay
+essence
+estate
+eternal
+ethics
+evidence
+evil
+evoke
+evolve
+exact
+example
+excess
+exchange
+excite
+exclude
+excuse
+execute
+exercise
+exhaust
+exhibit
+exile
+exist
+exit
+exotic
+expand
+expect
+expire
+explain
+expose
+express
+extend
+extra
+eye
+eyebrow
+fabric
+face
+faculty
+fade
+faint
+faith
+fall
+false
+fame
+family
+famous
+fan
+fancy
+fantasy
+farm
+fashion
+fat
+fatal
+father
+fatigue
+fault
+favorite
+feature
+february
+federal
+fee
+feed
+feel
+female
+fence
+festival
+fetch
+fever
+few
+fiber
+fiction
+field
+figure
+file
+film
+filter
+final
+find
+fine
+finger
+finish
+fire
+firm
+first
+fiscal
+fish
+fit
+fitness
+fix
+flag
+flame
+flash
+flat
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