mirror of https://github.com/ethereum/go-ethereum
parent
e1da124415
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@ -1,66 +0,0 @@ |
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// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package crypto |
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import ( |
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"strings" |
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"github.com/ethereum/go-ethereum/common" |
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"github.com/ethereum/go-ethereum/crypto/secp256k1" |
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) |
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type KeyPair struct { |
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PrivateKey []byte |
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PublicKey []byte |
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address []byte |
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mnemonic string |
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// The associated account
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// account *StateObject
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} |
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func GenerateNewKeyPair() *KeyPair { |
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_, prv := secp256k1.GenerateKeyPair() |
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keyPair, _ := NewKeyPairFromSec(prv) // swallow error, this one cannot err
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return keyPair |
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} |
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func NewKeyPairFromSec(seckey []byte) (*KeyPair, error) { |
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pubkey, err := secp256k1.GeneratePubKey(seckey) |
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if err != nil { |
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return nil, err |
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} |
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return &KeyPair{PrivateKey: seckey, PublicKey: pubkey}, nil |
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} |
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func (k *KeyPair) Address() []byte { |
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if k.address == nil { |
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k.address = Sha3(k.PublicKey[1:])[12:] |
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} |
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return k.address |
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} |
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func (k *KeyPair) Mnemonic() string { |
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if k.mnemonic == "" { |
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k.mnemonic = strings.Join(MnemonicEncode(common.Bytes2Hex(k.PrivateKey)), " ") |
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} |
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return k.mnemonic |
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} |
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func (k *KeyPair) AsStrings() (string, string, string, string) { |
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return k.Mnemonic(), common.Bytes2Hex(k.Address()), common.Bytes2Hex(k.PrivateKey), common.Bytes2Hex(k.PublicKey) |
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} |
@ -1,76 +0,0 @@ |
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// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package crypto |
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import ( |
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"fmt" |
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"strconv" |
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) |
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// TODO: See if we can refactor this into a shared util lib if we need it multiple times
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func IndexOf(slice []string, value string) int64 { |
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for p, v := range slice { |
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if v == value { |
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return int64(p) |
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} |
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} |
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return -1 |
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} |
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func MnemonicEncode(message string) []string { |
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var out []string |
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n := int64(len(MnemonicWords)) |
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for i := 0; i < len(message); i += (len(message) / 8) { |
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x := message[i : i+8] |
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bit, _ := strconv.ParseInt(x, 16, 64) |
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w1 := (bit % n) |
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w2 := ((bit / n) + w1) % n |
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w3 := ((bit / n / n) + w2) % n |
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out = append(out, MnemonicWords[w1], MnemonicWords[w2], MnemonicWords[w3]) |
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} |
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return out |
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} |
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func MnemonicDecode(wordsar []string) string { |
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var out string |
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n := int64(len(MnemonicWords)) |
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for i := 0; i < len(wordsar); i += 3 { |
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word1 := wordsar[i] |
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word2 := wordsar[i+1] |
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word3 := wordsar[i+2] |
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w1 := IndexOf(MnemonicWords, word1) |
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w2 := IndexOf(MnemonicWords, word2) |
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w3 := IndexOf(MnemonicWords, word3) |
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y := (w2 - w1) % n |
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z := (w3 - w2) % n |
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// Golang handles modulo with negative numbers different then most languages
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// The modulo can be negative, we don't want that.
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if z < 0 { |
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z += n |
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} |
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if y < 0 { |
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y += n |
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} |
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x := w1 + n*(y) + n*n*(z) |
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out += fmt.Sprintf("%08x", x) |
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} |
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return out |
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} |
@ -1,90 +0,0 @@ |
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// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
|
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
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// GNU Lesser General Public License for more details.
|
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package crypto |
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import ( |
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"testing" |
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) |
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func TestMnDecode(t *testing.T) { |
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words := []string{ |
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"ink", |
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"balance", |
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"gain", |
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"fear", |
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"happen", |
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"melt", |
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"mom", |
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"surface", |
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"stir", |
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"bottle", |
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"unseen", |
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"expression", |
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"important", |
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"curl", |
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"grant", |
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"fairy", |
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"across", |
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"back", |
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"figure", |
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"breast", |
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"nobody", |
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"scratch", |
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"worry", |
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"yesterday", |
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} |
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encode := "c61d43dc5bb7a4e754d111dae8105b6f25356492df5e50ecb33b858d94f8c338" |
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result := MnemonicDecode(words) |
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if encode != result { |
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t.Error("We expected", encode, "got", result, "instead") |
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} |
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} |
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func TestMnEncode(t *testing.T) { |
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encode := "c61d43dc5bb7a4e754d111dae8105b6f25356492df5e50ecb33b858d94f8c338" |
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result := []string{ |
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"ink", |
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"balance", |
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"gain", |
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"fear", |
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"happen", |
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"melt", |
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"mom", |
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"surface", |
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"stir", |
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"bottle", |
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"unseen", |
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"expression", |
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"important", |
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"curl", |
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"grant", |
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"fairy", |
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"across", |
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"back", |
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"figure", |
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"breast", |
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"nobody", |
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"scratch", |
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"worry", |
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"yesterday", |
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} |
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words := MnemonicEncode(encode) |
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for i, word := range words { |
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if word != result[i] { |
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t.Error("Mnenonic does not match:", words, result) |
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} |
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} |
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} |
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