Evan Su
parent
bbe5ee979a
commit
c73fba2250
604
src/main.go
604
src/main.go
|
|
@ -1,604 +0,0 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"archive/zip"
|
||||
"bytes"
|
||||
"crypto/cipher"
|
||||
"crypto/hmac"
|
||||
"crypto/rand"
|
||||
"crypto/subtle"
|
||||
"flag"
|
||||
"fmt"
|
||||
"hash"
|
||||
"io"
|
||||
"math"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/HACKERALERT/infectious"
|
||||
"github.com/HACKERALERT/serpent"
|
||||
"github.com/schollz/progressbar/v3"
|
||||
"golang.org/x/crypto/argon2"
|
||||
"golang.org/x/crypto/blake2b"
|
||||
"golang.org/x/crypto/chacha20"
|
||||
"golang.org/x/crypto/hkdf"
|
||||
"golang.org/x/crypto/sha3"
|
||||
"golang.org/x/term"
|
||||
)
|
||||
|
||||
var KiB = 1 << 10
|
||||
var MiB = 1 << 20
|
||||
var GiB = 1 << 30
|
||||
var TiB = 1 << 40
|
||||
var rs5, _ = infectious.NewFEC(5, 15)
|
||||
var rs16, _ = infectious.NewFEC(16, 48)
|
||||
var rs24, _ = infectious.NewFEC(24, 72)
|
||||
var rs32, _ = infectious.NewFEC(32, 96)
|
||||
var rs64, _ = infectious.NewFEC(64, 192)
|
||||
var rs128, _ = infectious.NewFEC(128, 136)
|
||||
|
||||
func rsEncode(rs *infectious.FEC, data []byte) []byte {
|
||||
res := make([]byte, rs.Total())
|
||||
rs.Encode(data, func(s infectious.Share) {
|
||||
res[s.Number] = s.Data[0]
|
||||
})
|
||||
return res
|
||||
}
|
||||
|
||||
func rsDecode(rs *infectious.FEC, data []byte, fast bool) ([]byte, error) {
|
||||
if rs.Total() == 136 && fast {
|
||||
return data[:128], nil
|
||||
}
|
||||
tmp := make([]infectious.Share, rs.Total())
|
||||
for i := 0; i < rs.Total(); i++ {
|
||||
tmp[i].Number = i
|
||||
tmp[i].Data = append(tmp[i].Data, data[i])
|
||||
}
|
||||
res, err := rs.Decode(nil, tmp)
|
||||
if err != nil {
|
||||
if rs.Total() == 136 {
|
||||
return data[:128], err
|
||||
}
|
||||
return data[:rs.Total()/3], err
|
||||
}
|
||||
return res, nil
|
||||
}
|
||||
|
||||
func pad(data []byte) []byte {
|
||||
padLen := 128 - len(data)%128
|
||||
padding := bytes.Repeat([]byte{byte(padLen)}, padLen)
|
||||
return append(data, padding...)
|
||||
}
|
||||
|
||||
func unpad(data []byte) []byte {
|
||||
padLen := int(data[127])
|
||||
return data[:128-padLen]
|
||||
}
|
||||
|
||||
func work() int {
|
||||
flag.Usage = func() {
|
||||
fmt.Println("Usage: picocrypt [-p]aranoid [-r]eedsolo <item1> [<item2> ...]")
|
||||
fmt.Println("Items: can be a file (cat.png), folder (./src), or glob (*.txt)")
|
||||
}
|
||||
paranoid := flag.Bool("p", false, "")
|
||||
reedsolo := flag.Bool("r", false, "")
|
||||
fix := flag.Bool("f", false, "")
|
||||
flag.Parse()
|
||||
|
||||
mode := ""
|
||||
if flag.NArg() == 0 {
|
||||
flag.Usage()
|
||||
return 0
|
||||
}
|
||||
if flag.NArg() == 1 {
|
||||
if strings.HasSuffix(flag.Arg(0), ".pcv") {
|
||||
mode = "decrypt"
|
||||
} else {
|
||||
mode = "encrypt"
|
||||
}
|
||||
} else {
|
||||
mode = "encrypt"
|
||||
for _, v := range flag.Args() {
|
||||
if strings.HasSuffix(v, ".pcv") {
|
||||
fmt.Println("Multiple items cannot contain volumes.")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, v := range flag.Args() {
|
||||
if v == "-p" || v == "-r" || v == "-f" {
|
||||
fmt.Println("Flags are only accepted before arguments!")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
var password, cpassword []byte
|
||||
var err error
|
||||
if mode == "encrypt" {
|
||||
fmt.Print("Password: ")
|
||||
password, err = term.ReadPassword(int(os.Stdin.Fd()))
|
||||
if err != nil {
|
||||
fmt.Println("Error reading password.")
|
||||
return 1
|
||||
}
|
||||
fmt.Print(strings.Repeat("*", len(password)), " | Confirm: ")
|
||||
cpassword, err = term.ReadPassword(int(os.Stdin.Fd()))
|
||||
if err != nil {
|
||||
fmt.Println("Error reading password.")
|
||||
return 1
|
||||
}
|
||||
fmt.Println(strings.Repeat("*", len(cpassword)))
|
||||
if !bytes.Equal(password, cpassword) {
|
||||
fmt.Println("Passwords don't match.")
|
||||
return 1
|
||||
}
|
||||
} else {
|
||||
fmt.Print("Password: ")
|
||||
password, err = term.ReadPassword(int(os.Stdin.Fd()))
|
||||
if err != nil {
|
||||
fmt.Println("Error reading password.")
|
||||
return 1
|
||||
}
|
||||
fmt.Println(strings.Repeat("*", len(password)))
|
||||
}
|
||||
|
||||
fin_, fout_ := "", ""
|
||||
if mode == "decrypt" {
|
||||
fin_ = flag.Arg(0)
|
||||
fout_ = strings.TrimSuffix(fin_, ".pcv")
|
||||
} else {
|
||||
stat, err := os.Stat(flag.Arg(0))
|
||||
if flag.NArg() == 1 && err == nil && !stat.IsDir() {
|
||||
fin_ = flag.Arg(0)
|
||||
fout_ = fin_ + ".pcv"
|
||||
} else {
|
||||
items := []string{}
|
||||
for _, v := range flag.Args() {
|
||||
if strings.Contains(v, "../") || strings.HasPrefix(v, "/") {
|
||||
fmt.Println("Cannot encrypt outside of current directory.")
|
||||
return 1
|
||||
}
|
||||
matches, err := filepath.Glob(v)
|
||||
if err != nil {
|
||||
fmt.Println("Invalid glob pattern(s).")
|
||||
return 1
|
||||
}
|
||||
items = append(items, matches...)
|
||||
}
|
||||
files := []string{}
|
||||
for _, v := range items {
|
||||
stat, err := os.Stat(v)
|
||||
if err != nil {
|
||||
fmt.Println("Cannot access input(s).")
|
||||
return 1
|
||||
}
|
||||
if !stat.IsDir() {
|
||||
files = append(files, v)
|
||||
} else {
|
||||
filepath.Walk(v, func(path string, _ os.FileInfo, _ error) error {
|
||||
stat, err := os.Stat(path)
|
||||
if err == nil && !stat.IsDir() {
|
||||
files = append(files, path)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
}
|
||||
}
|
||||
if len(files) == 0 {
|
||||
fmt.Println("Nothing to encrypt.")
|
||||
return 1
|
||||
}
|
||||
|
||||
dir, err := os.Getwd()
|
||||
if err != nil {
|
||||
fmt.Println("Cannot get current working directory.")
|
||||
return 1
|
||||
}
|
||||
file, err := os.CreateTemp("", "")
|
||||
if err != nil {
|
||||
fmt.Println("Cannot create temporary file.")
|
||||
return 1
|
||||
}
|
||||
writer := zip.NewWriter(file)
|
||||
for i, path := range files {
|
||||
stat, err := os.Stat(path)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
header, err := zip.FileInfoHeader(stat)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
abs, err := filepath.Abs(path)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
abs = filepath.ToSlash(abs)
|
||||
header.Name = strings.TrimPrefix(abs, filepath.ToSlash(dir))
|
||||
header.Name = strings.TrimPrefix(header.Name, "/")
|
||||
header.Method = zip.Deflate
|
||||
entry, err := writer.CreateHeader(header)
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
fin, err := os.Open(path)
|
||||
if err != nil {
|
||||
writer.Close()
|
||||
file.Close()
|
||||
os.Remove(file.Name())
|
||||
fmt.Println("Read access to input(s) denied.")
|
||||
return 1
|
||||
}
|
||||
bar := progressbar.NewOptions(
|
||||
int(stat.Size()),
|
||||
progressbar.OptionClearOnFinish(),
|
||||
progressbar.OptionFullWidth(),
|
||||
progressbar.OptionShowBytes(true),
|
||||
progressbar.OptionUseIECUnits(true),
|
||||
progressbar.OptionSetDescription(
|
||||
fmt.Sprintf("Compressing [%d/%d]:", i+1, len(files)),
|
||||
),
|
||||
)
|
||||
_, err = io.Copy(io.MultiWriter(entry, bar), fin)
|
||||
fin.Close()
|
||||
if err != nil {
|
||||
writer.Close()
|
||||
file.Close()
|
||||
os.Remove(file.Name())
|
||||
fmt.Println("Insufficient disk space.")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
writer.Close()
|
||||
file.Close()
|
||||
fin_ = file.Name()
|
||||
fout_ = "encrypted.zip.pcv"
|
||||
defer os.Remove(file.Name())
|
||||
}
|
||||
}
|
||||
|
||||
var padded bool
|
||||
var salt []byte // Argon2 salt, 16 bytes
|
||||
var hkdfSalt []byte // HKDF-SHA3 salt, 32 bytes
|
||||
var serpentIV []byte // Serpent IV, 16 bytes
|
||||
var nonce []byte // 24-byte XChaCha20 nonce
|
||||
var keyHash []byte // SHA3-512 hash of encryption key
|
||||
var keyHashRef []byte // Same as 'keyHash', but used for comparison
|
||||
var authTag []byte // 64-byte authentication tag (BLAKE2b or HMAC-SHA3)
|
||||
|
||||
fin, err := os.Open(fin_)
|
||||
if err != nil {
|
||||
fmt.Println("Error accessing input file.")
|
||||
return 1
|
||||
}
|
||||
_, err = os.Stat(fout_)
|
||||
if err == nil {
|
||||
fmt.Println("Output file already exists.")
|
||||
return 1
|
||||
}
|
||||
fout, err := os.Create(fout_)
|
||||
if err != nil {
|
||||
fmt.Println("Error creating output file.")
|
||||
return 1
|
||||
}
|
||||
|
||||
stat, err := os.Stat(fin_)
|
||||
if err != nil {
|
||||
fmt.Println("Error accessing input file.")
|
||||
return 1
|
||||
}
|
||||
total := stat.Size()
|
||||
if mode == "decrypt" {
|
||||
total -= 789
|
||||
}
|
||||
if mode == "encrypt" {
|
||||
errs := make([]error, 11)
|
||||
salt = make([]byte, 16)
|
||||
hkdfSalt = make([]byte, 32)
|
||||
serpentIV = make([]byte, 16)
|
||||
nonce = make([]byte, 24)
|
||||
_, errs[0] = fout.Write(rsEncode(rs5, []byte("v1.34")))
|
||||
commentsLength := []byte(fmt.Sprintf("%05d", 0))
|
||||
_, errs[1] = fout.Write(rsEncode(rs5, commentsLength))
|
||||
flags := make([]byte, 5)
|
||||
if *paranoid {
|
||||
flags[0] = 1
|
||||
}
|
||||
if *reedsolo {
|
||||
flags[3] = 1
|
||||
}
|
||||
if total%int64(MiB) >= int64(MiB)-128 {
|
||||
flags[4] = 1
|
||||
}
|
||||
_, errs[3] = fout.Write(rsEncode(rs5, flags))
|
||||
rand.Read(salt)
|
||||
rand.Read(hkdfSalt)
|
||||
rand.Read(serpentIV)
|
||||
rand.Read(nonce)
|
||||
_, errs[4] = fout.Write(rsEncode(rs16, salt))
|
||||
_, errs[5] = fout.Write(rsEncode(rs32, hkdfSalt))
|
||||
_, errs[6] = fout.Write(rsEncode(rs16, serpentIV))
|
||||
_, errs[7] = fout.Write(rsEncode(rs24, nonce))
|
||||
_, errs[8] = fout.Write(make([]byte, 192))
|
||||
_, errs[9] = fout.Write(make([]byte, 96))
|
||||
_, errs[10] = fout.Write(make([]byte, 192))
|
||||
for _, err := range errs {
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("Insufficient disk space.")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
} else {
|
||||
errs := make([]error, 10)
|
||||
version := make([]byte, 15)
|
||||
fin.Read(version)
|
||||
_, errs[0] = rsDecode(rs5, version, !(*fix))
|
||||
tmp := make([]byte, 15)
|
||||
fin.Read(tmp)
|
||||
tmp, errs[1] = rsDecode(rs5, tmp, !(*fix))
|
||||
commentsLength, _ := strconv.Atoi(string(tmp))
|
||||
fin.Read(make([]byte, commentsLength*3))
|
||||
total -= int64(commentsLength) * 3
|
||||
flags := make([]byte, 15)
|
||||
fin.Read(flags)
|
||||
flags, errs[2] = rsDecode(rs5, flags, !(*fix))
|
||||
*paranoid = flags[0] == 1
|
||||
*reedsolo = flags[3] == 1
|
||||
padded = flags[4] == 1
|
||||
if flags[1] == 1 {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("Keyfiles are not supported.")
|
||||
return 1
|
||||
}
|
||||
salt = make([]byte, 48)
|
||||
fin.Read(salt)
|
||||
salt, errs[3] = rsDecode(rs16, salt, !(*fix))
|
||||
hkdfSalt = make([]byte, 96)
|
||||
fin.Read(hkdfSalt)
|
||||
hkdfSalt, errs[4] = rsDecode(rs32, hkdfSalt, !(*fix))
|
||||
serpentIV = make([]byte, 48)
|
||||
fin.Read(serpentIV)
|
||||
serpentIV, errs[5] = rsDecode(rs16, serpentIV, !(*fix))
|
||||
nonce = make([]byte, 72)
|
||||
fin.Read(nonce)
|
||||
nonce, errs[6] = rsDecode(rs24, nonce, !(*fix))
|
||||
keyHashRef = make([]byte, 192)
|
||||
fin.Read(keyHashRef)
|
||||
keyHashRef, errs[7] = rsDecode(rs64, keyHashRef, !(*fix))
|
||||
keyfileHashRef := make([]byte, 96)
|
||||
fin.Read(keyfileHashRef)
|
||||
_, errs[8] = rsDecode(rs32, keyfileHashRef, !(*fix))
|
||||
authTag = make([]byte, 192)
|
||||
fin.Read(authTag)
|
||||
authTag, errs[9] = rsDecode(rs64, authTag, !(*fix))
|
||||
for _, err := range errs {
|
||||
if err != nil {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("The volume header is damaged.")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var key []byte
|
||||
if *paranoid {
|
||||
key = argon2.IDKey(
|
||||
password,
|
||||
salt,
|
||||
8,
|
||||
1<<20,
|
||||
8,
|
||||
32,
|
||||
)
|
||||
} else {
|
||||
key = argon2.IDKey(
|
||||
password,
|
||||
salt,
|
||||
4,
|
||||
1<<20,
|
||||
4,
|
||||
32,
|
||||
)
|
||||
}
|
||||
|
||||
tmp := sha3.New512()
|
||||
tmp.Write(key)
|
||||
keyHash = tmp.Sum(nil)
|
||||
|
||||
if mode == "decrypt" {
|
||||
if subtle.ConstantTimeCompare(keyHash, keyHashRef) != 1 {
|
||||
fin.Close()
|
||||
fout.Close()
|
||||
os.Remove(fout_)
|
||||
fmt.Println("Incorrect password.")
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
done, counter := 0, 0
|
||||
chacha, _ := chacha20.NewUnauthenticatedCipher(key, nonce)
|
||||
var mac hash.Hash
|
||||
subkey := make([]byte, 32)
|
||||
hkdf := hkdf.New(sha3.New256, key, hkdfSalt, nil)
|
||||
hkdf.Read(subkey)
|
||||
if *paranoid {
|
||||
mac = hmac.New(sha3.New512, subkey)
|
||||
} else {
|
||||
mac, _ = blake2b.New512(subkey)
|
||||
}
|
||||
serpentKey := make([]byte, 32)
|
||||
hkdf.Read(serpentKey)
|
||||
s, _ := serpent.NewCipher(serpentKey)
|
||||
serpent := cipher.NewCTR(s, serpentIV)
|
||||
|
||||
bar := progressbar.NewOptions(
|
||||
int(total),
|
||||
progressbar.OptionClearOnFinish(),
|
||||
progressbar.OptionFullWidth(),
|
||||
progressbar.OptionShowBytes(true),
|
||||
progressbar.OptionUseIECUnits(true),
|
||||
progressbar.OptionSetDescription(
|
||||
(func() string {
|
||||
if mode == "encrypt" {
|
||||
return "Encrypting:"
|
||||
}
|
||||
return "Decrypting:"
|
||||
})(),
|
||||
),
|
||||
)
|
||||
for {
|
||||
var src []byte
|
||||
if mode == "decrypt" && *reedsolo {
|
||||
src = make([]byte, MiB/128*136)
|
||||
} else {
|
||||
src = make([]byte, MiB)
|
||||
}
|
||||
size, err := fin.Read(src)
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
src = src[:size]
|
||||
dst := make([]byte, len(src))
|
||||
|
||||
if mode == "encrypt" {
|
||||
if *paranoid {
|
||||
serpent.XORKeyStream(dst, src)
|
||||
copy(src, dst)
|
||||
}
|
||||
chacha.XORKeyStream(dst, src)
|
||||
mac.Write(dst)
|
||||
if *reedsolo {
|
||||
copy(src, dst)
|
||||
dst = nil
|
||||
if len(src) == MiB {
|
||||
for i := 0; i < MiB; i += 128 {
|
||||
dst = append(dst, rsEncode(rs128, src[i:i+128])...)
|
||||
}
|
||||
} else {
|
||||
chunks := math.Floor(float64(len(src)) / 128)
|
||||
for i := 0; float64(i) < chunks; i++ {
|
||||
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 New Issue