mirror of
https://github.com/HACKERALERT/Picocrypt.git
synced 2024-05-29 00:11:18 +00:00
676 lines
15 KiB
Go
676 lines
15 KiB
Go
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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"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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"os/signal"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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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 f *bool
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var k *bool
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var p *bool
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var r *bool
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var mode string
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func parse() int {
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flag.Usage = func() {
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fmt.Println("Usage: picocrypt <item1> [<item2> ...]")
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fmt.Println("Items: can be files, folders, or globs")
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fmt.Println("Flags:")
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flag.PrintDefaults()
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os.Exit(1)
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}
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f = flag.Bool("f", false, "(decryption) attempt to fix corruption")
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k = flag.Bool("k", false, "(decryption) keep output unconditionally")
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p = flag.Bool("p", false, "(encryption) use paranoid mode")
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r = flag.Bool("r", false, "(encryption) encode with Reed-Solomon")
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flag.Parse()
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if flag.NArg() == 0 {
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flag.Usage()
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}
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for _, v := range flag.Args() {
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if strings.HasPrefix(v, "-") {
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fmt.Println("Flags must be provided before arguments!")
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return 1
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}
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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 must not contain volumes.")
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return 1
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}
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}
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}
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return 0
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}
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var password []byte
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var confirmp []byte
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var err error
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func auth() int {
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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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confirmp, 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(confirmp)))
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if !bytes.Equal(password, confirmp) {
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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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return 0
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}
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var pin string
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var pout string
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var pzip string
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var file *os.File
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var writer *zip.Writer
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var files []string
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var interrupted bool
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func prepare() int {
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if mode == "decrypt" {
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pin = flag.Arg(0)
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pout = strings.TrimSuffix(pin, ".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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pin = flag.Arg(0)
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pout = pin + ".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:", v)
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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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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:", v)
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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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}
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}
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return 0
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}
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func compress() int {
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if files == nil {
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return 0
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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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dir = filepath.ToSlash(dir)
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file, err = os.CreateTemp("", "picocrypt-cli-v2-*.tmp")
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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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pzip = file.Name()
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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, 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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fmt.Println("Read access to input denied:", path)
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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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if interrupted {
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time.Sleep(1 * time.Second)
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} else {
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writer.Close()
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file.Close()
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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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}
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writer.Close()
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file.Close()
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pin = file.Name()
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pout = "encrypted-" + strconv.Itoa(int(time.Now().Unix())) + ".zip.pcv"
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return 0
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}
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var fin *os.File
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var fout *os.File
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var padded bool
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var salt []byte
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var hkdfSalt []byte
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var serpentIV []byte
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var nonce []byte
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var keyHash []byte
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var keyHashRef []byte
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var authTag []byte
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var key []byte
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var mac hash.Hash
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var MiB = 1 << 20
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var GiB = 1 << 30
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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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fin, err = os.Open(pin)
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if err != nil {
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fmt.Println("Error accessing input file:", pin)
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return 1
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}
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_, err = os.Stat(pout)
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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(pout)
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if err != nil {
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fmt.Println("Error creating output file:", pout)
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return 1
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}
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stat, err := os.Stat(pin)
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if err != nil {
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fmt.Println("Error accessing input file:", pin)
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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, 10)
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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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_, errs[1] = fout.Write(rsEncode(rs5, []byte("00000")))
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flags := make([]byte, 5)
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if *p {
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flags[0] = 1
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}
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if *r {
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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[2] = 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[3] = fout.Write(rsEncode(rs16, salt))
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_, errs[4] = fout.Write(rsEncode(rs32, hkdfSalt))
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_, errs[5] = fout.Write(rsEncode(rs16, serpentIV))
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_, errs[6] = fout.Write(rsEncode(rs24, nonce))
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_, errs[7] = fout.Write(make([]byte, 192))
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_, errs[8] = fout.Write(make([]byte, 96))
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_, errs[9] = 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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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, 9)
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version := make([]byte, 15)
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fin.Read(version)
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_, errs[0] = rsDecode(rs5, version, !(*f))
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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, !(*f))
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comments, _ := strconv.Atoi(string(tmp))
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fin.Read(make([]byte, comments*3))
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total -= int64(comments) * 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, !(*f))
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*p = flags[0] == 1
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*r = 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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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, !(*f))
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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, !(*f))
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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, !(*f))
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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, !(*f))
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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, !(*f))
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fin.Read(make([]byte, 96))
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authTag = make([]byte, 192)
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fin.Read(authTag)
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authTag, errs[8] = rsDecode(rs64, authTag, !(*f))
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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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fmt.Println("The volume header is irrecoverably damaged!")
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return 1
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}
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}
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}
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if *p {
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key = argon2.IDKey(password, salt, 8, 1<<20, 8, 32)
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} else {
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key = argon2.IDKey(password, salt, 4, 1<<20, 4, 32)
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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 !bytes.Equal(keyHash, keyHashRef) {
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fin.Close()
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fout.Close()
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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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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 *p {
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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" && *r {
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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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bar.Write(src)
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if mode == "encrypt" {
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if *p {
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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 *r {
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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])...)
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}
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dst = append(dst, rsEncode(rs128, pad(src[int(chunks*128):]))...)
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}
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}
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} else {
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if *r {
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copy(dst, src)
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src = nil
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if len(dst) == MiB/128*136 {
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for i := 0; i < MiB/128*136; i += 136 {
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tmp, err := rsDecode(rs128, dst[i:i+136], !(*f))
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if err != nil {
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fin.Close()
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fout.Close()
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fmt.Println("\nThe input file is irrecoverably damaged.")
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return 1
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}
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if i == MiB/128*136-136 && done+MiB/128*136 >= int(total) && padded {
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tmp = unpad(tmp)
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}
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src = append(src, tmp...)
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}
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} else {
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chunks := len(dst)/136 - 1
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for i := 0; i < chunks; i++ {
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tmp, err := rsDecode(rs128, dst[i*136:(i+1)*136], !(*f))
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if err != nil {
|
|
fin.Close()
|
|
fout.Close()
|
|
fmt.Println("\nThe input file is irrecoverably damaged.")
|
|
return 1
|
|
}
|
|
src = append(src, tmp...)
|
|
}
|
|
tmp, err := rsDecode(rs128, dst[int(chunks)*136:], !(*f))
|
|
if err != nil {
|
|
fin.Close()
|
|
fout.Close()
|
|
fmt.Println("\nThe 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 *p {
|
|
copy(src, dst)
|
|
serpent.XORKeyStream(dst, src)
|
|
}
|
|
}
|
|
|
|
_, err = fout.Write(dst)
|
|
if err != nil {
|
|
if interrupted {
|
|
time.Sleep(1 * time.Second)
|
|
} else {
|
|
fin.Close()
|
|
fout.Close()
|
|
fmt.Println("\nInsufficient disk space!")
|
|
return 1
|
|
}
|
|
}
|
|
if mode == "decrypt" && *r {
|
|
done += MiB / 128 * 136
|
|
} else {
|
|
done += MiB
|
|
}
|
|
|
|
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
|
|
}
|
|
}
|
|
|
|
if mode == "encrypt" {
|
|
fout.Seek(309, 0)
|
|
fout.Write(rsEncode(rs64, keyHash))
|
|
fout.Write(rsEncode(rs32, make([]byte, 32)))
|
|
fout.Write(rsEncode(rs64, mac.Sum(nil)))
|
|
} else {
|
|
if !bytes.Equal(mac.Sum(nil), authTag) {
|
|
fin.Close()
|
|
fout.Close()
|
|
if *k {
|
|
fmt.Println("\nThe modified output has been kept.")
|
|
return 0
|
|
} else {
|
|
fmt.Println("\nThe input volume is damaged or modified!")
|
|
if *r {
|
|
fmt.Println("Fortunately, this volume is encoded with Reed-Solomon.")
|
|
fmt.Println("Try again using the '-f' flag to repair the corruption.")
|
|
}
|
|
return 1
|
|
}
|
|
}
|
|
}
|
|
|
|
fin.Close()
|
|
fout.Close()
|
|
fmt.Print("Completed -> ", fout.Name())
|
|
return 0
|
|
}
|
|
|
|
func main() {
|
|
if parse() == 1 {
|
|
os.Exit(1)
|
|
}
|
|
if auth() == 1 {
|
|
os.Exit(1)
|
|
}
|
|
if prepare() == 1 {
|
|
os.Exit(1)
|
|
}
|
|
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, os.Interrupt)
|
|
go func() {
|
|
<-c
|
|
interrupted = true
|
|
if fin != nil {
|
|
fin.Close()
|
|
}
|
|
if fout != nil {
|
|
fmt.Print("\nSystem interrupt detected, cleaning up incomplete output: ")
|
|
fout.Close()
|
|
if err := os.Remove(fout.Name()); err == nil {
|
|
fmt.Print("Success.")
|
|
} else {
|
|
fmt.Print("Failure.")
|
|
}
|
|
}
|
|
if pzip != "" {
|
|
fmt.Print("\nSystem interrupt detected, cleaning up temporary files: ")
|
|
writer.Close()
|
|
file.Close()
|
|
if err := os.Remove(pzip); err == nil {
|
|
fmt.Print("Success.")
|
|
} else {
|
|
fmt.Print("Failure.")
|
|
}
|
|
}
|
|
os.Exit(1)
|
|
}()
|
|
|
|
if compress() == 1 {
|
|
os.Remove(pzip)
|
|
os.Exit(1)
|
|
} else {
|
|
defer os.Remove(pzip)
|
|
}
|
|
if work() == 1 {
|
|
if pzip != "" {
|
|
os.Remove(pzip)
|
|
}
|
|
if fout != nil {
|
|
os.Remove(fout.Name())
|
|
}
|
|
os.Exit(1)
|
|
}
|
|
}
|