Pass regex by argv

go.mod

@@ -1,15 +1,9 @@
 module github.com/meehow/peer-id-generator
 
+go 1.16
+
 require (
-	github.com/btcsuite/btcd v0.0.0-20190209000034-12ce2fc7d321 // indirect
-	github.com/gogo/protobuf v1.2.0 // indirect
 	github.com/gxed/hashland v0.0.0-20180221191214-d9f6b97f8db2 // indirect
-	github.com/libp2p/go-libp2p-crypto v2.0.5+incompatible
-	github.com/libp2p/go-libp2p-peer v2.4.0+incompatible
+	github.com/libp2p/go-libp2p-core v0.9.0 // indirect
 	github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 // indirect
-	github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16 // indirect
-	github.com/mr-tron/base58 v1.1.0 // indirect
-	github.com/multiformats/go-multihash v1.0.8 // indirect
-	github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72 // indirect
-	golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67 // indirect
 )

go.sum

@@ -1,49 +1,103 @@
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/btcsuite/btcd v0.0.0-20190209000034-12ce2fc7d321 h1:saxRQsKei5cMlpK0xaOLOJiRHFt3YbdYnsH45lu9LI8=
 github.com/btcsuite/btcd v0.0.0-20190209000034-12ce2fc7d321/go.mod h1:d3C0AkH6BRcvO8T0UEPu53cnw4IbV63x1bEjildYhO0=
+github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
+github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
 github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
 github.com/btcsuite/btcutil v0.0.0-20180706230648-ab6388e0c60a/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
+github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
 github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg=
 github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY=
 github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
 github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
 github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
+github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/davecgh/go-spew v0.0.0-20171005155431-ecdeabc65495/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/gogo/protobuf v1.2.0 h1:xU6/SpYbvkNYiptHJYEDRseDLvYE7wSqhYYNy0QSUzI=
 github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
+github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/gxed/hashland v0.0.0-20180221191214-d9f6b97f8db2 h1:neM/RzmgBKxsJ3ioEZnIQmgQQq/sn6xDqYOEYnH3RYM=
 github.com/gxed/hashland v0.0.0-20180221191214-d9f6b97f8db2/go.mod h1:YUhWml1NaWLTNBl4NPptkB8MadfaIhgq+a2TRc+Mw4Q=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/ipfs/go-cid v0.0.7 h1:ysQJVJA3fNDF1qigJbsSQOdjhVLsOEoPdh0+R97k3jY=
+github.com/ipfs/go-cid v0.0.7/go.mod h1:6Ux9z5e+HpkQdckYoX1PG/6xqKspzlEIR5SDmgqgC/I=
+github.com/jbenet/go-cienv v0.1.0/go.mod h1:TqNnHUmJgXau0nCzC7kXWeotg3J9W34CUv5Djy1+FlA=
+github.com/jbenet/goprocess v0.1.4 h1:DRGOFReOMqqDNXwW70QkacFW0YN9QnwLV0Vqk+3oU0o=
+github.com/jbenet/goprocess v0.1.4/go.mod h1:5yspPrukOVuOLORacaBi858NqyClJPQxYZlqdZVfqY4=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
+github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
+github.com/libp2p/go-buffer-pool v0.0.2 h1:QNK2iAFa8gjAe1SPz6mHSMuCcjs+X1wlHzeOSqcmlfs=
+github.com/libp2p/go-buffer-pool v0.0.2/go.mod h1:MvaB6xw5vOrDl8rYZGLFdKAuk/hRoRZd1Vi32+RXyFM=
+github.com/libp2p/go-flow-metrics v0.0.3/go.mod h1:HeoSNUrOJVK1jEpDqVEiUOIXqhbnS27omG0uWU5slZs=
+github.com/libp2p/go-libp2p-core v0.9.0 h1:t97Mv0LIBZlP2FXVRNKKVzHJCIjbIWGxYptGId4+htU=
+github.com/libp2p/go-libp2p-core v0.9.0/go.mod h1:ESsbz31oC3C1AvMJoGx26RTuCkNhmkSRCqZ0kQtJ2/8=
 github.com/libp2p/go-libp2p-crypto v2.0.5+incompatible h1:XVZ7JguuAuxfZ+MAbHsaKs508zRlAc7bGu65xKpxxns=
 github.com/libp2p/go-libp2p-crypto v2.0.5+incompatible/go.mod h1:WHpT3tvhh7GM2INNJhQBuI6J+5z/o3QI0lTF5UVjppk=
 github.com/libp2p/go-libp2p-peer v2.4.0+incompatible h1:1THIuO/h7GuITklYS7RgGCyoVl8aP9XH4NcokcdhDZc=
 github.com/libp2p/go-libp2p-peer v2.4.0+incompatible/go.mod h1:fS2eFKRO1IomwBAf+SuE8P1XOT/AAiqSgVPNIFA7Jc0=
+github.com/libp2p/go-msgio v0.0.6/go.mod h1:4ecVB6d9f4BDSL5fqvPiC4A3KivjWn+Venn/1ALLMWA=
+github.com/libp2p/go-openssl v0.0.7 h1:eCAzdLejcNVBzP/iZM9vqHnQm+XyCEbSSIheIPRGNsw=
+github.com/libp2p/go-openssl v0.0.7/go.mod h1:unDrJpgy3oFr+rqXsarWifmJuNnJR4chtO1HmaZjggc=
 github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1 h1:lYpkrQH5ajf0OXOcUbGjvZxxijuBwbbmlSxLiuofa+g=
 github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1/go.mod h1:pD8RvIylQ358TN4wwqatJ8rNavkEINozVn9DtGI3dfQ=
 github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16 h1:5W7KhL8HVF3XCFOweFD3BNESdnO8ewyYTFT2R+/b8FQ=
 github.com/minio/sha256-simd v0.0.0-20190131020904-2d45a736cd16/go.mod h1:2FMWW+8GMoPweT6+pI63m9YE3Lmw4J71hV56Chs1E/U=
+github.com/minio/sha256-simd v0.1.1-0.20190913151208-6de447530771/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
+github.com/minio/sha256-simd v0.1.1 h1:5QHSlgo3nt5yKOJrC7W8w7X+NFl8cMPZm96iu8kKUJU=
+github.com/minio/sha256-simd v0.1.1/go.mod h1:B5e1o+1/KgNmWrSQK08Y6Z1Vb5pwIktudl0J58iy0KM=
 github.com/mr-tron/base58 v1.1.0 h1:Y51FGVJ91WBqCEabAi5OPUz38eAx8DakuAm5svLcsfQ=
 github.com/mr-tron/base58 v1.1.0/go.mod h1:xcD2VGqlgYjBdcBLw+TuYLr8afG+Hj8g2eTVqeSzSU8=
+github.com/mr-tron/base58 v1.1.3/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
+github.com/mr-tron/base58 v1.2.0 h1:T/HDJBh4ZCPbU39/+c3rRvE0uKBQlU27+QI8LJ4t64o=
+github.com/mr-tron/base58 v1.2.0/go.mod h1:BinMc/sQntlIE1frQmRFPUoPA1Zkr8VRgBdjWI2mNwc=
+github.com/multiformats/go-base32 v0.0.3 h1:tw5+NhuwaOjJCC5Pp82QuXbrmLzWg7uxlMFp8Nq/kkI=
+github.com/multiformats/go-base32 v0.0.3/go.mod h1:pLiuGC8y0QR3Ue4Zug5UzK9LjgbkL8NSQj0zQ5Nz/AA=
+github.com/multiformats/go-base36 v0.1.0 h1:JR6TyF7JjGd3m6FbLU2cOxhC0Li8z8dLNGQ89tUg4F4=
+github.com/multiformats/go-base36 v0.1.0/go.mod h1:kFGE83c6s80PklsHO9sRn2NCoffoRdUUOENyW/Vv6sM=
+github.com/multiformats/go-multiaddr v0.2.2 h1:XZLDTszBIJe6m0zF6ITBrEcZR73OPUhCBBS9rYAuUzI=
+github.com/multiformats/go-multiaddr v0.2.2/go.mod h1:NtfXiOtHvghW9KojvtySjH5y0u0xW5UouOmQQrn6a3Y=
+github.com/multiformats/go-multibase v0.0.3 h1:l/B6bJDQjvQ5G52jw4QGSYeOTZoAwIO77RblWplfIqk=
+github.com/multiformats/go-multibase v0.0.3/go.mod h1:5+1R4eQrT3PkYZ24C3W2Ue2tPwIdYQD509ZjSb5y9Oc=
+github.com/multiformats/go-multihash v0.0.13/go.mod h1:VdAWLKTwram9oKAatUcLxBNUjdtcVwxObEQBtRfuyjc=
+github.com/multiformats/go-multihash v0.0.14 h1:QoBceQYQQtNUuf6s7wHxnE2c8bhbMqhfGzNI032se/I=
+github.com/multiformats/go-multihash v0.0.14/go.mod h1:VdAWLKTwram9oKAatUcLxBNUjdtcVwxObEQBtRfuyjc=
 github.com/multiformats/go-multihash v1.0.8 h1:v/1HVWH2gq7IZGnFXrTsjoG2I5XIsU5gXiGH5SH915k=
 github.com/multiformats/go-multihash v1.0.8/go.mod h1:sT17phG+xVgnrZc8ht/ZoCIV0sKRwvmZkXk46UfSxM4=
+github.com/multiformats/go-varint v0.0.5/go.mod h1:3Ls8CIEsrijN6+B7PbrXRPxHRPuXSrVKRY101jdMZYE=
+github.com/multiformats/go-varint v0.0.6 h1:gk85QWKxh3TazbLxED/NlDVv8+q+ReFJk7Y2W/KhfNY=
+github.com/multiformats/go-varint v0.0.6/go.mod h1:3Ls8CIEsrijN6+B7PbrXRPxHRPuXSrVKRY101jdMZYE=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
+github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572 h1:RC6RW7j+1+HkWaX/Yh71Ee5ZHaHYt7ZP4sQgUrm6cDU=
+github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572/go.mod h1:w0SWMsp6j9O/dk4/ZpIhL+3CkG8ofA2vuv7k+ltqUMc=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72 h1:qLC7fQah7D6K1B0ujays3HV9gkFtllcxhzImRR7ArPQ=
 github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
+github.com/spaolacci/murmur3 v1.1.0 h1:7c1g84S4BPRrfL5Xrdp6fOJ206sU9y293DDHaoy0bLI=
+github.com/spaolacci/murmur3 v1.1.0/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 golang.org/x/crypto v0.0.0-20170930174604-9419663f5a44/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67 h1:ng3VDlRp5/DHpSWl02R4rM9I+8M2rhmsuLwAMmkLQWE=
 golang.org/x/crypto v0.0.0-20190211182817-74369b46fc67/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8 h1:1wopBVtVdWnn03fZelqdXTqk7U7zPQCb+T4rbU9ZEoU=
+golang.org/x/crypto v0.0.0-20190611184440-5c40567a22f8/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb h1:fgwFCsaw9buMuxNd6+DQfAuSFqbNiQZpcgJQAgJsK6k=
+golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=

main.go

@@ -1,95 +1,161 @@
 package main
 
+/*
+based on
+https://github.com/ipfs/go-ipfs-keystore/blob/master/keystore.go
+https://github.com/ipfs/go-ipfs/blob/master/core/coreapi/key.go
+https://github.com/ipfs/go-ipfs/blob/master/core/node/identity.go
+*/
+
 import (
 	"crypto/rand"
 	"fmt"
-	"io/ioutil"
 	"log"
 	"os"
 	"regexp"
 	"runtime"
-	"strings"
+	//"strings"
+	//"encoding/base64"
+	//"encoding/base32"
 
-	"github.com/libp2p/go-libp2p-crypto"
-	"github.com/libp2p/go-libp2p-peer"
+	"github.com/libp2p/go-libp2p-core/crypto"
+	"github.com/libp2p/go-libp2p-core/peer"
 )
 
 var (
-	alphabet   = regexp.MustCompile("^[123456789abcdefghijklmnopqrstuvwxyz]+$")
 	numWorkers = runtime.NumCPU()
 )
 
 // Key stores PrettyID containing desired substring at Index
 type Key struct {
 	PrettyID string
-	Index    int
+	Index int
+	Part string
+	PrivateKey64 string
 }
 
 func main() {
 	if len(os.Args) != 2 {
 		fmt.Printf(`
-This tool generates IPFS public and private keypair until it finds public key
-which contains required substring. Keys are stored in local directory. If you
-like one of them, you can move it to ~/.ipfs/keystore/ to use it with IPFS.
+This tool can generate IPFS public and private keypairs
+and filter the public keys by regex, to find vanity IPFS public keys
+
+Keypairs are printed to stdout and to output.txt
+
+To use a key, edit your ~/.ipfs/config file, which is generated by ipfs init
+Identity.PeerID is your public key
+Identity.PrivKey is your private key in base64 encoding
 
 Usage:
-	%s {part}
-		For fast results suggested length of public key part is 4-5 characters
+  %s {regex}
+  For fast results, use a short substring of 4-5 characters
+
+Alphabet of public key:
+  [1-9a-zA-Z]
+
+Regex samples:
+  hello$
+  (?i)hello
+  (foo|bar)$
+
+Regex basics:
+  (?i)  add this prefix to make the regex case-insensitive
+  (a|b)  a or b
+  $  end of string
+  ^  start of string. not needed here, the start is mostly constant
+
+Regex docs:
+  https://duckduckgo.com/?q=golang+regexp
+  https://yourbasic.org/golang/regexp-cheat-sheet/
+  https://golangdocs.com/regex-in-golang-regexp-package
+
 `, os.Args[0])
 		os.Exit(1)
 	}
-	part := strings.ToLower(os.Args[1])
-	if !alphabet.MatchString(part) {
-		fmt.Println("{part} must match the alphabet:", alphabet.String())
-		os.Exit(2)
+
+	partRegex := regexp.MustCompile(os.Args[1])
+	// TODO? validate regex with alphabet
+	//alphabet = regexp.MustCompile("^[123456789abcdefghijklmnopqrstuvwxyz]+$")
+
+	outputFile, err := os.OpenFile("output.txt", os.O_APPEND | os.O_CREATE | os.O_WRONLY, 0644)
+	if err != nil {
+		log.Println(err)
 	}
+	defer outputFile.Close()
+
 	runtime.GOMAXPROCS(numWorkers)
 	keyChan := make(chan Key)
 	for i := 0; i < numWorkers; i++ {
 		go func() {
-			err := generateKey(part, keyChan)
+			err := generateKey(partRegex, keyChan)
 			if err != nil {
 				log.Fatal(err)
 			}
 		}()
 	}
 	for key := range keyChan {
+
 		fmt.Printf(
-			"%s\u001b[32m%s\u001b[0m%s\n",
+			// TODO allow to disable color
+			"%s %s\u001b[32m%s\u001b[0m%s %s\n",
+			//"%s %s%s%s %s\n",
+			key.Part,
 			key.PrettyID[:key.Index],
-			key.PrettyID[key.Index:len(part)+key.Index],
-			key.PrettyID[len(part)+key.Index:])
+			key.PrettyID[key.Index:len(key.Part)+key.Index],
+			key.PrettyID[len(key.Part)+key.Index:],
+			key.PrivateKey64,
+		)
 
+		// TODO allow to print json format for ~/.ipfs/config
+		/*
+		fmt.Printf(
+			"%s\n  \"Identity\": {\n    \"PeerID\": \"%s\",\n    \"PrivKey\": \"%s\",\n  },\n\n",
+			key.Part, key.PrettyID, key.PrivateKey64,
+		)
+		*/
+
+		// TODO allow to disable writing to output.txt
+		_, err := outputFile.WriteString(
+			fmt.Sprintf("%s %s %s\n", key.Part, key.PrettyID, key.PrivateKey64),
+		)
+		if err != nil {
+			log.Println(err)
+		}
 	}
 }
 
-func generateKey(part string, keyChan chan Key) error {
+func generateKey(partRegex *regexp.Regexp, keyChan chan Key) error {
 	for {
 		privateKey, publicKey, err := crypto.GenerateEd25519Key(rand.Reader)
 		if err != nil {
 			return err
 		}
+
 		peerID, err := peer.IDFromPublicKey(publicKey)
 		if err != nil {
 			return err
 		}
 		prettyID := peerID.Pretty()
-		lowerID := strings.ToLower(prettyID)
-		idx := strings.Index(lowerID, part)
-		if idx == -1 {
+
+		if !partRegex.MatchString(prettyID) {
 			continue
 		}
-		privateKeyBytes, err := privateKey.Bytes()
-		if err != nil {
-			return err
-		}
-		err = ioutil.WriteFile(prettyID, privateKeyBytes, 0600)
+
+		part := partRegex.FindString(prettyID)
+		idx := partRegex.FindStringIndex(prettyID)[0]
+
+		privateKeyBytes, err := crypto.MarshalPrivateKey(privateKey)
 		if err != nil {
 			return err
 		}
+
+		privateKey64 := crypto.ConfigEncodeKey(privateKeyBytes)
+
 		keyChan <- Key{
 			PrettyID: prettyID,
 			Index:    idx,
+			Part:     part,
+			PrivateKey64: privateKey64,
 		}
 	}
 }