├── LICENSE
├── README.md
└── ethvanity.go


/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2017 
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/README.md:
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 1 | # ethvanity
 2 | Generate an ethereum address that starts with some prefix
 3 | 
 4 | ### installation
 5 | 
 6 | You need to install golang 1.8, first, check https://golang.org/
 7 | 
 8 | Just drop into the command line:
 9 | 
10 | `go get github.com/adriamb/ethvanity`
11 | 
12 | ### execution
13 | 
14 | `~/go/bin/ethvanity <maxparallel> <prefix>`
15 | 
16 | It will find an account that starts with a prefix (hexdecimal lowercase),
17 | using the specified threads (gorutines), e.g.
18 | 
19 | `~/go/bin/ethvanity 5 ab1a`
20 | 
21 | Will output a private key with an account that starts with 0xab1a
22 | 


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/ethvanity.go:
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 1 | package main
 2 | 
 3 | import (
 4 | 	"crypto/ecdsa"
 5 | 	"crypto/rand"
 6 | 	"encoding/hex"
 7 | 	"log"
 8 | 	"math"
 9 | 	"os"
10 | 	"strconv"
11 | 	"strings"
12 | 	"sync/atomic"
13 | 
14 | 	"github.com/ethereum/go-ethereum/crypto"
15 | 	"github.com/ethereum/go-ethereum/crypto/secp256k1"
16 | )
17 | 
18 | func main() {
19 | 
20 | 	if len(os.Args) != 3 {
21 | 		log.Fatal("Usage ethvanity <concurrency> <addressprefix>")
22 | 	}
23 | 
24 | 	concurrency, err := strconv.Atoi(os.Args[1])
25 | 	if err != nil {
26 | 		log.Fatal("Bad concurrency parameter")
27 | 	}
28 | 	prefix := os.Args[2]
29 | 
30 | 	var combinations = math.Pow(16, float64(len(prefix)))
31 | 
32 | 	log.Println("Generating key with address starting with", prefix, "using", concurrency, "threads")
33 | 	log.Println("Total combinations are", uint64(combinations))
34 | 
35 | 	var counter uint64 = 0
36 | 	var finished = make(chan bool)
37 | 
38 | 	for i := 0; i < concurrency; i++ {
39 | 
40 | 		go func() {
41 | 
42 | 			for {
43 | 
44 | 				atomic.AddUint64(&counter, 1)
45 | 				if counter%25000 == 0 {
46 | 					current := (float64(counter) * 100) / combinations
47 | 					log.Printf("%v (%.3f %%)", counter, current)
48 | 				}
49 | 
50 | 				k, err := ecdsa.GenerateKey(secp256k1.S256(), rand.Reader)
51 | 				if err != nil {
52 | 					log.Fatal(err)
53 | 				}
54 | 
55 | 				address := crypto.PubkeyToAddress(k.PublicKey)
56 | 				addressStr := hex.EncodeToString(address[:])
57 | 
58 | 				if strings.HasPrefix(addressStr, os.Args[2]) {
59 | 
60 | 					pvkStr := hex.EncodeToString(crypto.FromECDSA(k))
61 | 					log.Println("\n\nFOUND address=[", addressStr, "] pvk=[", pvkStr, "]")
62 | 
63 | 					finished <- true
64 | 
65 | 				}
66 | 			}
67 | 		}()
68 | 	}
69 | 
70 | 	<-finished
71 | }
72 | 


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