Initla Commit

6 months ago · 35ffc1ab09
commit 35ffc1ab09
9 changed files with 473 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,9 @@
+*~
+*.bak
+*.key
+**/.DS_Store
+
+/salty
+/salty-keygen
+/cmd/salty/salty
+/cmd/salty-keygen/salty-keygen
--- a/22
+++ b/22
@ -0,0 +1,22 @@
+Copyright (C) 2022-present James Mills
+
+salty is covered by the MIT license::
+
+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.
--- a/README.md
+++ b/README.md
@ -0,0 +1,49 @@
+# salty
+
+A command-line tool using the [saltpack](https://saltpack.org) messaging
+format and the [keys.pub](https://keys.pub) Go library.
+
+## Install
+
+```#!sh
+$ go install go.mills.io/salty@latest
+```
+
+## Usage
+
+### Generating Keys
+
+Alice:
+```#!sh
+$ salty-keygen -o alice.key
+Public key: kex1jszw7x5yc8509rssv9avmkjk749m5r0zjt6twtmtmtrq8wyt662q680s99
+```
+
+Bob:
+```#!sh
+$ salty-keygen -o bob.key
+Public key: kex1gsjmjud9fpyc39hczyugxeg29ljesnxlja44lk2xlg6cu8tlpfkqdppaw4
+```
+
+### Encrypting Messages
+
+From Alice to Bob:
+```#!sh
+$ salty -i alice -r kex1gsjmjud9fpyc39hczyugxeg29ljesnxlja44lk2xlg6cu8tlpfkqdppaw4
+Hello bob!
+BEGIN SALTPACK ENCRYPTED MESSAGE. keDIDMQWYvVR58B FTfTeDQNHuepdES xwnHuwnSTNQAils We53yO0JGG4aOeO gvFnsz1bwz8y1vY 2Qg6HCqX78YKwl1 D2QzLdY4rKG3Zd3 sHVWVs731LISwgH DTy0zz3dTmAZKHq nmwniEVfs432K38 PRlNWhp1AgvHL6h 98KtaudNLc876A3 5PMHnSlHTRVaQuX US1W4tS3R18ib0b CVIib7v9lT95jeg B6isCaISrRNgl3q VQjjgTWkG271jG3 7WwD6OJbAqdtkeF N50CcS8OLzFvcwM tCv88fBw5XJNKWB KyQXxu9kztR2nnb WtkhCNSPle4lH0E QqRkYN7lLvZieB8 mahEMNopC0vtNSa HE72KIr9wkkG13m 9bP. END SALTPACK ENCRYPTED MESSAGE.
+```
+
+### Decrypting Messages
+
+Bob (from Alice):
+```#!sh
+$ salty -i bob -d
+BEGIN SALTPACK ENCRYPTED MESSAGE. keDIDMQWYvVR58B FTfTeDQNHuepdES xwnHuwnSTNQAils We53yO0JGG4aOeO gvFnsz1bwz8y1vY 2Qg6HCqX78YKwl1 D2QzLdY4rKG3Zd3 sHVWVs731LISwgH DTy0zz3dTmAZKHq nmwniEVfs432K38 PRlNWhp1AgvHL6h 98KtaudNLc876A3 5PMHnSlHTRVaQuX US1W4tS3R18ib0b CVIib7v9lT95jeg B6isCaISrRNgl3q VQjjgTWkG271jG3 7WwD6OJbAqdtkeF N50CcS8OLzFvcwM tCv88fBw5XJNKWB KyQXxu9kztR2nnb WtkhCNSPle4lH0E QqRkYN7lLvZieB8 mahEMNopC0vtNSa HE72KIr9wkkG13m 9bP. END SALTPACK ENCRYPTED MESSAGE.
+# signed by: kex1jszw7x5yc8509rssv9avmkjk749m5r0zjt6twtmtmtrq8wyt662q680s99
+Hello bob!
+```
+
+## License
+
+`salty` is licensed under the terms of the [MIT License](/LICENSE)
--- a/cmd/salty-keygen/main.go
+++ b/cmd/salty-keygen/main.go
@ -0,0 +1,81 @@
+package main
+
+import (
+	"encoding/base64"
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/keys-pub/keys"
+	log "github.com/sirupsen/logrus"
+	flag "github.com/spf13/pflag"
+	"golang.org/x/term"
+
+	"go.mills.io/salty"
+)
+
+var (
+	debug   bool
+	version bool
+
+	output string
+)
+
+func init() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: %s [options]\n", filepath.Base(os.Args[0]))
+		flag.PrintDefaults()
+	}
+
+	flag.BoolVarP(&debug, "debug", "D", false, "enable debug logging")
+	flag.BoolVarP(&version, "version", "v", false, "display version information")
+
+	flag.StringVarP(&output, "output", "o", "", "Write the result to the file")
+}
+
+func generate(out *os.File) {
+	k := keys.GenerateEdX25519Key()
+
+	if !term.IsTerminal(int(out.Fd())) {
+		fmt.Fprintf(os.Stderr, "Public key: %s\n", k.PublicKey().ID().String())
+	}
+
+	fmt.Fprintf(out, "# created: %s\n", time.Now().Format(time.RFC3339))
+	fmt.Fprintf(out, "# public key: %s\n", k.PublicKey().ID().String())
+	fmt.Fprintf(out, "%s\n", base64.StdEncoding.EncodeToString(k.Private()))
+}
+
+func main() {
+	flag.Parse()
+
+	if version {
+		fmt.Printf("saltpack %s", salty.FullVersion())
+		os.Exit(0)
+	}
+
+	if debug {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetLevel(log.InfoLevel)
+	}
+
+	out := os.Stdout
+	if output != "" {
+		f, err := os.OpenFile(output, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
+		if err != nil {
+			log.WithError(err).Fatalf("failed to open output file %q for writing", output)
+		}
+		defer func() {
+			if err := f.Close(); err != nil {
+				log.WithError(err).Fatalf("failed to close output file %q", output)
+			}
+		}()
+		out = f
+	}
+
+	if fi, err := out.Stat(); err == nil && fi.Mode().IsRegular() && fi.Mode().Perm()&0004 != 0 {
+		log.Warn("writing secret key to a world-readable file")
+	}
+	generate(out)
+}
--- a/cmd/salty-keygen/saltpack-keygen
+++ b/cmd/salty-keygen/saltpack-keygen
--- a/cmd/salty/main.go
+++ b/cmd/salty/main.go
@ -0,0 +1,160 @@
+package main
+
+import (
+	"bufio"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/keys-pub/keys"
+	"github.com/keys-pub/keys/saltpack"
+	log "github.com/sirupsen/logrus"
+	flag "github.com/spf13/pflag"
+	"go.mills.io/salty"
+)
+
+var (
+	debug   bool
+	version bool
+
+	encrypt    bool
+	decrypt    bool
+	output     string
+	identity   string
+	recipients []string
+)
+
+func init() {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: %s [options]\n", filepath.Base(os.Args[0]))
+		flag.PrintDefaults()
+	}
+
+	flag.BoolVarP(&debug, "debug", "D", false, "enable debug logging")
+	flag.BoolVarP(&version, "version", "v", false, "display version information")
+
+	flag.BoolVarP(&encrypt, "encrypt", "e", false, "Encrypt the input to the output (Default if omitted)")
+	flag.BoolVarP(&decrypt, "decrypt", "d", false, "Decrypt the input to the output")
+	flag.StringVarP(&output, "output", "o", "", "Write the result to the file")
+	flag.StringSliceVarP(&recipients, "recipient", "r", []string{}, "Encrypt to the specified RECIPIENT (Can be repeated)")
+	flag.StringVarP(&identity, "identity", "i", "", "Use the identity file at PATH. Can be repeated.")
+}
+
+func parseIdentity(f io.Reader) (*keys.EdX25519Key, error) {
+	const privateKeySizeLimit = 1 << 8 // 256 bytes
+	scanner := bufio.NewScanner(io.LimitReader(f, privateKeySizeLimit))
+	var n int
+	for scanner.Scan() {
+		n++
+		line := scanner.Text()
+		if strings.HasPrefix(line, "#") || line == "" {
+			continue
+		}
+		bs, err := base64.StdEncoding.DecodeString(line)
+		if err != nil {
+			return nil, fmt.Errorf("error at line %d: %v", n, err)
+		}
+		return keys.NewEdX25519KeyFromPrivateKey(keys.Bytes64(bs)), nil
+	}
+	if err := scanner.Err(); err != nil {
+		return nil, fmt.Errorf("failed to read identity file: %v", err)
+	}
+
+	return nil, fmt.Errorf("no key found")
+}
+
+func main() {
+	flag.Parse()
+
+	if version {
+		fmt.Printf("saltpack %s", salty.FullVersion())
+		os.Exit(0)
+	}
+
+	if debug {
+		log.SetLevel(log.DebugLevel)
+	} else {
+		log.SetLevel(log.InfoLevel)
+	}
+
+	if !(encrypt || decrypt) {
+		encrypt = true
+	}
+
+	id, err := os.Open(identity)
+	if err != nil {
+		log.WithError(err).Fatalf("error opening identity file: %q", identity)
+	}
+	defer id.Close()
+
+	key, err := parseIdentity(id)
+	if err != nil {
+		log.WithError(err).Fatalf("error reading private key: %q", identity)
+	}
+
+	var ids []keys.ID
+
+	for _, recipient := range recipients {
+		ids = append(ids, keys.ID(recipient))
+	}
+
+	in := os.Stdin
+	if flag.NArg() == 1 {
+		input := flag.Arg(0)
+		f, err := os.Open(flag.Arg(0))
+		if err != nil {
+			log.WithError(err).Fatalf("failed to open input file %q for writing", input)
+		}
+		defer func() {
+			if err := f.Close(); err != nil {
+				log.WithError(err).Fatalf("failed to close input file %q", input)
+			}
+		}()
+		in = f
+	}
+
+	out := os.Stdout
+	if output != "" {
+		f, err := os.OpenFile(output, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0600)
+		if err != nil {
+			log.WithError(err).Fatalf("failed to open output file %q for writing", output)
+		}
+		defer func() {
+			if err := f.Close(); err != nil {
+				log.WithError(err).Fatalf("failed to close output file %q", output)
+			}
+		}()
+		out = f
+	}
+
+	message, err := io.ReadAll(in)
+	if err != nil {
+		log.WithError(err).Fatalf("error reading input")
+	}
+
+	var result []byte
+
+	if encrypt {
+		encrypted, err := saltpack.Signcrypt(message, true, key, ids...)
+		if err != nil {
+			log.WithError(err).Fatalf("error encrypting input")
+		}
+		result = encrypted[:]
+	} else if decrypt {
+		out, sender, err := saltpack.SigncryptOpen(message, true, saltpack.NewKeyring(key))
+		if err != nil {
+			log.WithError(err).Fatalf("error decrypting input")
+		}
+		if sender != nil {
+			fmt.Fprintf(os.Stderr, "# signed by: %s\n", sender)
+		}
+		result = out[:]
+	} else {
+		log.Fatalf("one of -e/--encrypt or -d/--decrypt modes not spplied")
+	}
+
+	out.Write(result)
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,30 @@
+module go.mills.io/salty
+
+go 1.17
+
+require (
+	github.com/keys-pub/keys v0.1.22
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/pflag v1.0.5
+	golang.org/x/term v0.0.0-20210317153231-de623e64d2a6
+)
+
+require (
+	github.com/ScaleFT/sshkeys v0.0.0-20200327173127-6142f742bca5 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dchest/bcrypt_pbkdf v0.0.0-20150205184540-83f37f9c154a // indirect
+	github.com/dchest/blake2b v1.0.0 // indirect
+	github.com/golang/protobuf v1.5.1 // indirect
+	github.com/google/go-cmp v0.5.5 // indirect
+	github.com/keybase/go-codec v0.0.0-20180928230036-164397562123 // indirect
+	github.com/keybase/saltpack v0.0.0-20200430135328-e19b1910c0c5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/tyler-smith/go-bip39 v1.1.0 // indirect
+	github.com/vmihailenco/msgpack/v4 v4.3.12 // indirect
+	github.com/vmihailenco/tagparser v0.1.2 // indirect
+	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2 // indirect
+	golang.org/x/net v0.0.0-20210326060303-6b1517762897 // indirect
+	golang.org/x/sys v0.0.0-20210324051608-47abb6519492 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,104 @@
+github.com/ScaleFT/sshkeys v0.0.0-20200327173127-6142f742bca5 h1:VauE2GcJNZFun2Och6tIT2zJZK1v6jxALQDA9BIji/E=
+github.com/ScaleFT/sshkeys v0.0.0-20200327173127-6142f742bca5/go.mod h1:gxOHeajFfvGQh/fxlC8oOKBe23xnnJTif00IFFbiT+o=
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--- a/version.go
+++ b/version.go
@ -0,0 +1,18 @@
+package salty
+
+import (
+	"fmt"
+)
+
+var (
+	// Version release version
+	Version = "0.0.1"
+
+	// Commit will be overwritten automatically by the build system
+	Commit = "HEAD"
+)
+
+// FullVersion display the full version and build
+func FullVersion() string {
+	return fmt.Sprintf("%s@%s", Version, Commit)
+}