mirror of
https://github.com/HACKERALERT/Picocrypt.git
synced 2024-12-27 18:04:21 +00:00
Rename -fix to -f
This commit is contained in:
Evan Su
GitHub
parent
1b4998d4e2
commit
bbe5ee979a
1 changed files with 604 additions and 0 deletions
604
src/main.go
Normal file
604
src/main.go
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@ -0,0 +1,604 @@
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package main
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import (
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"archive/zip"
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"bytes"
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"crypto/cipher"
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"crypto/hmac"
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"crypto/rand"
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"crypto/subtle"
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"flag"
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"fmt"
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"hash"
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"io"
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"math"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/HACKERALERT/infectious"
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"github.com/HACKERALERT/serpent"
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"github.com/schollz/progressbar/v3"
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"golang.org/x/crypto/argon2"
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"golang.org/x/crypto/blake2b"
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"golang.org/x/crypto/chacha20"
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"golang.org/x/crypto/hkdf"
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"golang.org/x/crypto/sha3"
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"golang.org/x/term"
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)
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var KiB = 1 << 10
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var MiB = 1 << 20
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var GiB = 1 << 30
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var TiB = 1 << 40
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var rs5, _ = infectious.NewFEC(5, 15)
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var rs16, _ = infectious.NewFEC(16, 48)
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var rs24, _ = infectious.NewFEC(24, 72)
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var rs32, _ = infectious.NewFEC(32, 96)
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var rs64, _ = infectious.NewFEC(64, 192)
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var rs128, _ = infectious.NewFEC(128, 136)
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func rsEncode(rs *infectious.FEC, data []byte) []byte {
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res := make([]byte, rs.Total())
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rs.Encode(data, func(s infectious.Share) {
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res[s.Number] = s.Data[0]
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})
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return res
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}
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func rsDecode(rs *infectious.FEC, data []byte, fast bool) ([]byte, error) {
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if rs.Total() == 136 && fast {
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return data[:128], nil
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}
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tmp := make([]infectious.Share, rs.Total())
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for i := 0; i < rs.Total(); i++ {
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tmp[i].Number = i
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tmp[i].Data = append(tmp[i].Data, data[i])
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}
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res, err := rs.Decode(nil, tmp)
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if err != nil {
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if rs.Total() == 136 {
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return data[:128], err
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}
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return data[:rs.Total()/3], err
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}
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return res, nil
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}
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func pad(data []byte) []byte {
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padLen := 128 - len(data)%128
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padding := bytes.Repeat([]byte{byte(padLen)}, padLen)
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return append(data, padding...)
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}
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func unpad(data []byte) []byte {
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padLen := int(data[127])
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return data[:128-padLen]
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}
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func work() int {
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flag.Usage = func() {
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fmt.Println("Usage: picocrypt [-p]aranoid [-r]eedsolo <item1> [<item2> ...]")
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fmt.Println("Items: can be a file (cat.png), folder (./src), or glob (*.txt)")
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}
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paranoid := flag.Bool("p", false, "")
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reedsolo := flag.Bool("r", false, "")
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fix := flag.Bool("f", false, "")
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flag.Parse()
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mode := ""
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if flag.NArg() == 0 {
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flag.Usage()
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return 0
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}
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if flag.NArg() == 1 {
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if strings.HasSuffix(flag.Arg(0), ".pcv") {
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mode = "decrypt"
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} else {
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mode = "encrypt"
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}
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} else {
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mode = "encrypt"
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for _, v := range flag.Args() {
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if strings.HasSuffix(v, ".pcv") {
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fmt.Println("Multiple items cannot contain volumes.")
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return 1
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}
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}
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}
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for _, v := range flag.Args() {
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if v == "-p" || v == "-r" || v == "-f" {
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fmt.Println("Flags are only accepted before arguments!")
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return 1
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}
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}
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var password, cpassword []byte
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var err error
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if mode == "encrypt" {
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fmt.Print("Password: ")
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password, err = term.ReadPassword(int(os.Stdin.Fd()))
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if err != nil {
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fmt.Println("Error reading password.")
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return 1
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}
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fmt.Print(strings.Repeat("*", len(password)), " | Confirm: ")
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cpassword, err = term.ReadPassword(int(os.Stdin.Fd()))
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if err != nil {
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fmt.Println("Error reading password.")
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return 1
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}
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fmt.Println(strings.Repeat("*", len(cpassword)))
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if !bytes.Equal(password, cpassword) {
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fmt.Println("Passwords don't match.")
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return 1
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}
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} else {
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fmt.Print("Password: ")
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password, err = term.ReadPassword(int(os.Stdin.Fd()))
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if err != nil {
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fmt.Println("Error reading password.")
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return 1
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}
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fmt.Println(strings.Repeat("*", len(password)))
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}
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fin_, fout_ := "", ""
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if mode == "decrypt" {
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fin_ = flag.Arg(0)
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fout_ = strings.TrimSuffix(fin_, ".pcv")
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} else {
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stat, err := os.Stat(flag.Arg(0))
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if flag.NArg() == 1 && err == nil && !stat.IsDir() {
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fin_ = flag.Arg(0)
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fout_ = fin_ + ".pcv"
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} else {
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items := []string{}
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for _, v := range flag.Args() {
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if strings.Contains(v, "../") || strings.HasPrefix(v, "/") {
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fmt.Println("Cannot encrypt outside of current directory.")
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return 1
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}
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matches, err := filepath.Glob(v)
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if err != nil {
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fmt.Println("Invalid glob pattern(s).")
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return 1
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}
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items = append(items, matches...)
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}
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files := []string{}
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for _, v := range items {
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stat, err := os.Stat(v)
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if err != nil {
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fmt.Println("Cannot access input(s).")
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return 1
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}
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if !stat.IsDir() {
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files = append(files, v)
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} else {
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filepath.Walk(v, func(path string, _ os.FileInfo, _ error) error {
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stat, err := os.Stat(path)
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if err == nil && !stat.IsDir() {
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files = append(files, path)
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}
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return nil
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})
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}
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}
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if len(files) == 0 {
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fmt.Println("Nothing to encrypt.")
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return 1
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}
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dir, err := os.Getwd()
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if err != nil {
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fmt.Println("Cannot get current working directory.")
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return 1
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}
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file, err := os.CreateTemp("", "")
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if err != nil {
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fmt.Println("Cannot create temporary file.")
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return 1
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}
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writer := zip.NewWriter(file)
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for i, path := range files {
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stat, err := os.Stat(path)
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if err != nil {
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continue
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}
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header, err := zip.FileInfoHeader(stat)
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if err != nil {
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continue
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}
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abs, err := filepath.Abs(path)
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if err != nil {
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continue
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}
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abs = filepath.ToSlash(abs)
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header.Name = strings.TrimPrefix(abs, filepath.ToSlash(dir))
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header.Name = strings.TrimPrefix(header.Name, "/")
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header.Method = zip.Deflate
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entry, err := writer.CreateHeader(header)
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if err != nil {
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continue
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}
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fin, err := os.Open(path)
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if err != nil {
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writer.Close()
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file.Close()
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os.Remove(file.Name())
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fmt.Println("Read access to input(s) denied.")
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return 1
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}
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bar := progressbar.NewOptions(
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int(stat.Size()),
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progressbar.OptionClearOnFinish(),
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progressbar.OptionFullWidth(),
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progressbar.OptionShowBytes(true),
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progressbar.OptionUseIECUnits(true),
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progressbar.OptionSetDescription(
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fmt.Sprintf("Compressing [%d/%d]:", i+1, len(files)),
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),
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)
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_, err = io.Copy(io.MultiWriter(entry, bar), fin)
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fin.Close()
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if err != nil {
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writer.Close()
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file.Close()
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os.Remove(file.Name())
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fmt.Println("Insufficient disk space.")
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return 1
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}
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}
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writer.Close()
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file.Close()
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fin_ = file.Name()
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fout_ = "encrypted.zip.pcv"
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defer os.Remove(file.Name())
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}
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}
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var padded bool
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var salt []byte // Argon2 salt, 16 bytes
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var hkdfSalt []byte // HKDF-SHA3 salt, 32 bytes
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var serpentIV []byte // Serpent IV, 16 bytes
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var nonce []byte // 24-byte XChaCha20 nonce
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var keyHash []byte // SHA3-512 hash of encryption key
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var keyHashRef []byte // Same as 'keyHash', but used for comparison
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var authTag []byte // 64-byte authentication tag (BLAKE2b or HMAC-SHA3)
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fin, err := os.Open(fin_)
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if err != nil {
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fmt.Println("Error accessing input file.")
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return 1
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}
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_, err = os.Stat(fout_)
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if err == nil {
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fmt.Println("Output file already exists.")
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return 1
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}
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fout, err := os.Create(fout_)
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if err != nil {
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fmt.Println("Error creating output file.")
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return 1
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}
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stat, err := os.Stat(fin_)
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if err != nil {
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fmt.Println("Error accessing input file.")
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return 1
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}
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total := stat.Size()
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if mode == "decrypt" {
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total -= 789
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}
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if mode == "encrypt" {
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errs := make([]error, 11)
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salt = make([]byte, 16)
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hkdfSalt = make([]byte, 32)
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serpentIV = make([]byte, 16)
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nonce = make([]byte, 24)
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_, errs[0] = fout.Write(rsEncode(rs5, []byte("v1.34")))
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commentsLength := []byte(fmt.Sprintf("%05d", 0))
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_, errs[1] = fout.Write(rsEncode(rs5, commentsLength))
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flags := make([]byte, 5)
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if *paranoid {
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flags[0] = 1
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}
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if *reedsolo {
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flags[3] = 1
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}
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if total%int64(MiB) >= int64(MiB)-128 {
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flags[4] = 1
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}
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_, errs[3] = fout.Write(rsEncode(rs5, flags))
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rand.Read(salt)
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rand.Read(hkdfSalt)
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rand.Read(serpentIV)
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rand.Read(nonce)
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_, errs[4] = fout.Write(rsEncode(rs16, salt))
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_, errs[5] = fout.Write(rsEncode(rs32, hkdfSalt))
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_, errs[6] = fout.Write(rsEncode(rs16, serpentIV))
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_, errs[7] = fout.Write(rsEncode(rs24, nonce))
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_, errs[8] = fout.Write(make([]byte, 192))
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_, errs[9] = fout.Write(make([]byte, 96))
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_, errs[10] = fout.Write(make([]byte, 192))
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for _, err := range errs {
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if err != nil {
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fin.Close()
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fout.Close()
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os.Remove(fout_)
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fmt.Println("Insufficient disk space.")
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return 1
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}
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}
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} else {
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errs := make([]error, 10)
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version := make([]byte, 15)
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fin.Read(version)
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_, errs[0] = rsDecode(rs5, version, !(*fix))
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tmp := make([]byte, 15)
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fin.Read(tmp)
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tmp, errs[1] = rsDecode(rs5, tmp, !(*fix))
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commentsLength, _ := strconv.Atoi(string(tmp))
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fin.Read(make([]byte, commentsLength*3))
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total -= int64(commentsLength) * 3
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flags := make([]byte, 15)
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fin.Read(flags)
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flags, errs[2] = rsDecode(rs5, flags, !(*fix))
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*paranoid = flags[0] == 1
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*reedsolo = flags[3] == 1
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padded = flags[4] == 1
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if flags[1] == 1 {
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fin.Close()
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fout.Close()
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os.Remove(fout_)
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fmt.Println("Keyfiles are not supported.")
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return 1
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}
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salt = make([]byte, 48)
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fin.Read(salt)
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salt, errs[3] = rsDecode(rs16, salt, !(*fix))
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hkdfSalt = make([]byte, 96)
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fin.Read(hkdfSalt)
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hkdfSalt, errs[4] = rsDecode(rs32, hkdfSalt, !(*fix))
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serpentIV = make([]byte, 48)
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fin.Read(serpentIV)
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serpentIV, errs[5] = rsDecode(rs16, serpentIV, !(*fix))
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nonce = make([]byte, 72)
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fin.Read(nonce)
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nonce, errs[6] = rsDecode(rs24, nonce, !(*fix))
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keyHashRef = make([]byte, 192)
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fin.Read(keyHashRef)
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keyHashRef, errs[7] = rsDecode(rs64, keyHashRef, !(*fix))
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keyfileHashRef := make([]byte, 96)
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fin.Read(keyfileHashRef)
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_, errs[8] = rsDecode(rs32, keyfileHashRef, !(*fix))
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authTag = make([]byte, 192)
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fin.Read(authTag)
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authTag, errs[9] = rsDecode(rs64, authTag, !(*fix))
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for _, err := range errs {
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if err != nil {
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fin.Close()
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fout.Close()
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os.Remove(fout_)
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fmt.Println("The volume header is damaged.")
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return 1
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}
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}
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}
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var key []byte
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if *paranoid {
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key = argon2.IDKey(
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password,
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salt,
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8,
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1<<20,
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8,
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32,
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)
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} else {
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key = argon2.IDKey(
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password,
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salt,
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4,
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1<<20,
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4,
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32,
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)
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}
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tmp := sha3.New512()
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tmp.Write(key)
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keyHash = tmp.Sum(nil)
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if mode == "decrypt" {
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if subtle.ConstantTimeCompare(keyHash, keyHashRef) != 1 {
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fin.Close()
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fout.Close()
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os.Remove(fout_)
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fmt.Println("Incorrect password.")
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return 1
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}
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}
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done, counter := 0, 0
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chacha, _ := chacha20.NewUnauthenticatedCipher(key, nonce)
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var mac hash.Hash
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subkey := make([]byte, 32)
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hkdf := hkdf.New(sha3.New256, key, hkdfSalt, nil)
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hkdf.Read(subkey)
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if *paranoid {
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mac = hmac.New(sha3.New512, subkey)
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} else {
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mac, _ = blake2b.New512(subkey)
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}
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serpentKey := make([]byte, 32)
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hkdf.Read(serpentKey)
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s, _ := serpent.NewCipher(serpentKey)
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serpent := cipher.NewCTR(s, serpentIV)
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bar := progressbar.NewOptions(
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int(total),
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progressbar.OptionClearOnFinish(),
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progressbar.OptionFullWidth(),
|
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progressbar.OptionShowBytes(true),
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progressbar.OptionUseIECUnits(true),
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progressbar.OptionSetDescription(
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(func() string {
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if mode == "encrypt" {
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return "Encrypting:"
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}
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return "Decrypting:"
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})(),
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),
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)
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for {
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var src []byte
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if mode == "decrypt" && *reedsolo {
|
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src = make([]byte, MiB/128*136)
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} else {
|
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src = make([]byte, MiB)
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}
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size, err := fin.Read(src)
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if err != nil {
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break
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}
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src = src[:size]
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dst := make([]byte, len(src))
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if mode == "encrypt" {
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if *paranoid {
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serpent.XORKeyStream(dst, src)
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copy(src, dst)
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}
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chacha.XORKeyStream(dst, src)
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mac.Write(dst)
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if *reedsolo {
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copy(src, dst)
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dst = nil
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if len(src) == MiB {
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for i := 0; i < MiB; i += 128 {
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dst = append(dst, rsEncode(rs128, src[i:i+128])...)
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}
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} else {
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chunks := math.Floor(float64(len(src)) / 128)
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for i := 0; float64(i) < chunks; i++ {
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dst = append(dst, rsEncode(rs128, src[i*128:(i+1)*128])...)
|
||||
}
|
||||
dst = append(dst, rsEncode(rs128, pad(src[int(chunks*128):]))...)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if *reedsolo {
|
||||
copy(dst, src)
|
||||
src = nil
|
||||
if len(dst) == MiB/128*136 {
|
||||
for i := 0; i < MiB/128*136; i += 136 {
|
||||
tmp, err := rsDecode(rs128, dst[i:i+136], !(*fix))
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("The input file is irrecoverably damaged.")
|
||||
return 1
|
||||
}
|
||||
if i == MiB/128*136-136 && done+MiB/128*136 >= int(total) && padded {
|
||||
tmp = unpad(tmp)
|
||||
}
|
||||
src = append(src, tmp...)
|
||||
}
|
||||
} else {
|
||||
chunks := len(dst)/136 - 1
|
||||
for i := 0; i < chunks; i++ {
|
||||
tmp, err := rsDecode(rs128, dst[i*136:(i+1)*136], !(*fix))
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("The input file is irrecoverably damaged.")
|
||||
return 1
|
||||
}
|
||||
src = append(src, tmp...)
|
||||
}
|
||||
tmp, err := rsDecode(rs128, dst[int(chunks)*136:], !(*fix))
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("The input file is irrecoverably damaged.")
|
||||
return 1
|
||||
}
|
||||
src = append(src, unpad(tmp)...)
|
||||
}
|
||||
dst = make([]byte, len(src))
|
||||
}
|
||||
mac.Write(src)
|
||||
chacha.XORKeyStream(dst, src)
|
||||
if *paranoid {
|
||||
copy(src, dst)
|
||||
serpent.XORKeyStream(dst, src)
|
||||
}
|
||||
}
|
||||
|
||||
_, err = fout.Write(dst)
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("Insufficient disk space.")
|
||||
return 1
|
||||
}
|
||||
if mode == "decrypt" && *reedsolo {
|
||||
done += MiB / 128 * 136
|
||||
} else {
|
||||
done += MiB
|
||||
}
|
||||
bar.Set(done)
|
||||
|
||||
if counter >= 60*GiB {
|
||||
nonce = make([]byte, 24)
|
||||
hkdf.Read(nonce)
|
||||
chacha, _ = chacha20.NewUnauthenticatedCipher(key, nonce)
|
||||
serpentIV = make([]byte, 16)
|
||||
hkdf.Read(serpentIV)
|
||||
serpent = cipher.NewCTR(s, serpentIV)
|
||||
counter = 0
|
||||
}
|
||||
}
|
||||
bar.Set64(total)
|
||||
|
||||
if mode == "encrypt" {
|
||||
fout.Seek(int64(309+0*3), 0)
|
||||
fout.Write(rsEncode(rs64, keyHash))
|
||||
fout.Write(rsEncode(rs32, make([]byte, 32)))
|
||||
fout.Write(rsEncode(rs64, mac.Sum(nil)))
|
||||
} else {
|
||||
if subtle.ConstantTimeCompare(mac.Sum(nil), authTag) != 1 {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("\nThe input volume is damaged or modified.")
|
||||
if *reedsolo {
|
||||
if !(*fix) {
|
||||
fmt.Println("Fortunately, this volume is encoded with Reed-Solomon.")
|
||||
fmt.Println("Try again using the '-f' flag to repair the corruption.")
|
||||
} else {
|
||||
fmt.Println("The corruption could not be fixed with Reed-Solomon.")
|
||||
}
|
||||
}
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
fmt.Println("\nCompleted.")
|
||||
return 0
|
||||
}
|
||||
|
||||
func main() {
|
||||
os.Exit(work())
|
||||
}
|
||||
Loading…
Reference in a new issue