chore: update project layout

This commit is contained in:
moonD4rk
2023-03-10 14:52:26 +08:00
parent 9850624d45
commit b65d3186c4
36 changed files with 181 additions and 179 deletions
+239
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@@ -0,0 +1,239 @@
package crypto
import (
"crypto/aes"
"crypto/cipher"
"crypto/des"
"crypto/hmac"
"crypto/sha1"
"crypto/sha256"
"encoding/asn1"
"errors"
"golang.org/x/crypto/pbkdf2"
)
var (
errPasswordIsEmpty = errors.New("password is empty")
errDecodeASN1Failed = errors.New("decode ASN1 data failed")
errEncryptedLength = errors.New("length of encrypted password less than block size")
)
type ASN1PBE interface {
Decrypt(globalSalt, masterPwd []byte) (key []byte, err error)
}
func NewASN1PBE(b []byte) (pbe ASN1PBE, err error) {
var (
n nssPBE
m metaPBE
l loginPBE
)
if _, err := asn1.Unmarshal(b, &n); err == nil {
return n, nil
}
if _, err := asn1.Unmarshal(b, &m); err == nil {
return m, nil
}
if _, err := asn1.Unmarshal(b, &l); err == nil {
return l, nil
}
return nil, errDecodeASN1Failed
}
// nssPBE Struct
//
// SEQUENCE (2 elem)
// OBJECT IDENTIFIER
// SEQUENCE (2 elem)
// OCTET STRING (20 byte)
// INTEGER 1
// OCTET STRING (16 byte)
type nssPBE struct {
AlgoAttr struct {
asn1.ObjectIdentifier
SaltAttr struct {
EntrySalt []byte
Len int
}
}
Encrypted []byte
}
func (n nssPBE) Decrypt(globalSalt, masterPwd []byte) (key []byte, err error) {
glmp := append(globalSalt, masterPwd...)
hp := sha1.Sum(glmp)
s := append(hp[:], n.entrySalt()...)
chp := sha1.Sum(s)
pes := paddingZero(n.entrySalt(), 20)
tk := hmac.New(sha1.New, chp[:])
tk.Write(pes)
pes = append(pes, n.entrySalt()...)
k1 := hmac.New(sha1.New, chp[:])
k1.Write(pes)
tkPlus := append(tk.Sum(nil), n.entrySalt()...)
k2 := hmac.New(sha1.New, chp[:])
k2.Write(tkPlus)
k := append(k1.Sum(nil), k2.Sum(nil)...)
iv := k[len(k)-8:]
return des3Decrypt(k[:24], iv, n.encrypted())
}
func (n nssPBE) entrySalt() []byte {
return n.AlgoAttr.SaltAttr.EntrySalt
}
func (n nssPBE) encrypted() []byte {
return n.Encrypted
}
// MetaPBE Struct
//
// SEQUENCE (2 elem)
// OBJECT IDENTIFIER
// SEQUENCE (2 elem)
// SEQUENCE (2 elem)
// OBJECT IDENTIFIER
// SEQUENCE (4 elem)
// OCTET STRING (32 byte)
// INTEGER 1
// INTEGER 32
// SEQUENCE (1 elem)
// OBJECT IDENTIFIER
// SEQUENCE (2 elem)
// OBJECT IDENTIFIER
// OCTET STRING (14 byte)
// OCTET STRING (16 byte)
type metaPBE struct {
AlgoAttr algoAttr
Encrypted []byte
}
type algoAttr struct {
asn1.ObjectIdentifier
Data struct {
Data struct {
asn1.ObjectIdentifier
SlatAttr slatAttr
}
IVData ivAttr
}
}
type ivAttr struct {
asn1.ObjectIdentifier
IV []byte
}
type slatAttr struct {
EntrySalt []byte
IterationCount int
KeySize int
Algorithm struct {
asn1.ObjectIdentifier
}
}
func (m metaPBE) Decrypt(globalSalt, masterPwd []byte) (key2 []byte, err error) {
k := sha1.Sum(globalSalt)
key := pbkdf2.Key(k[:], m.entrySalt(), m.iterationCount(), m.keySize(), sha256.New)
iv := append([]byte{4, 14}, m.iv()...)
return aes128CBCDecrypt(key, iv, m.encrypted())
}
func (m metaPBE) entrySalt() []byte {
return m.AlgoAttr.Data.Data.SlatAttr.EntrySalt
}
func (m metaPBE) iterationCount() int {
return m.AlgoAttr.Data.Data.SlatAttr.IterationCount
}
func (m metaPBE) keySize() int {
return m.AlgoAttr.Data.Data.SlatAttr.KeySize
}
func (m metaPBE) iv() []byte {
return m.AlgoAttr.Data.IVData.IV
}
func (m metaPBE) encrypted() []byte {
return m.Encrypted
}
// loginPBE Struct
//
// OCTET STRING (16 byte)
// SEQUENCE (2 elem)
// OBJECT IDENTIFIER
// OCTET STRING (8 byte)
// OCTET STRING (16 byte)
type loginPBE struct {
CipherText []byte
Data struct {
asn1.ObjectIdentifier
IV []byte
}
Encrypted []byte
}
func (l loginPBE) Decrypt(globalSalt, masterPwd []byte) (key []byte, err error) {
return des3Decrypt(globalSalt, l.iv(), l.encrypted())
}
func (l loginPBE) iv() []byte {
return l.Data.IV
}
func (l loginPBE) encrypted() []byte {
return l.Encrypted
}
func aes128CBCDecrypt(key, iv, encryptPass []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
encryptLen := len(encryptPass)
if encryptLen < block.BlockSize() {
return nil, errEncryptedLength
}
dst := make([]byte, encryptLen)
mode := cipher.NewCBCDecrypter(block, iv)
mode.CryptBlocks(dst, encryptPass)
dst = pkcs5UnPadding(dst, block.BlockSize())
return dst, nil
}
func pkcs5UnPadding(src []byte, blockSize int) []byte {
n := len(src)
paddingNum := int(src[n-1])
if n < paddingNum || paddingNum > blockSize {
return src
}
return src[:n-paddingNum]
}
// des3Decrypt use for decrypt firefox PBE
func des3Decrypt(key, iv []byte, src []byte) ([]byte, error) {
block, err := des.NewTripleDESCipher(key)
if err != nil {
return nil, err
}
blockMode := cipher.NewCBCDecrypter(block, iv)
sq := make([]byte, len(src))
blockMode.CryptBlocks(sq, src)
return pkcs5UnPadding(sq, block.BlockSize()), nil
}
func paddingZero(s []byte, l int) []byte {
h := l - len(s)
if h <= 0 {
return s
}
for i := len(s); i < l; i++ {
s = append(s, 0)
}
return s
}
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//go:build darwin
package crypto
func Chromium(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) <= 3 {
return nil, errPasswordIsEmpty
}
iv := []byte{32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32}
return aes128CBCDecrypt(key, iv, encryptPass[3:])
}
func DPAPI(data []byte) ([]byte, error) {
return nil, nil
}
+16
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@@ -0,0 +1,16 @@
//go:build linux
package crypto
func Chromium(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) < 3 {
return nil, errPasswordIsEmpty
}
chromeIV := []byte{32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32}
return aes128CBCDecrypt(key, chromeIV, encryptPass[3:])
}
func DPAPI(data []byte) ([]byte, error) {
return nil, nil
}
+87
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@@ -0,0 +1,87 @@
//go:build windows
package crypto
import (
"crypto/aes"
"crypto/cipher"
"syscall"
"unsafe"
)
func Chromium(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) < 3 {
return nil, errPasswordIsEmpty
}
return aesGCMDecrypt(encryptPass[15:], key, encryptPass[3:15])
}
func ChromiumForYandex(key, encryptPass []byte) ([]byte, error) {
if len(encryptPass) < 3 {
return nil, errPasswordIsEmpty
}
// remove Prefix 'v10'
// gcmBlockSize = 16
// gcmTagSize = 16
// gcmMinimumTagSize = 12 // NIST SP 800-38D recommends tags with 12 or more bytes.
// gcmStandardNonceSize = 12
return aesGCMDecrypt(encryptPass[12:], key, encryptPass[0:12])
}
// chromium > 80 https://source.chromium.org/chromium/chromium/src/+/master:components/os_crypt/os_crypt_win.cc
func aesGCMDecrypt(crypted, key, nounce []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockMode, err := cipher.NewGCM(block)
if err != nil {
return nil, err
}
origData, err := blockMode.Open(nil, nounce, crypted, nil)
if err != nil {
return nil, err
}
return origData, nil
}
type dataBlob struct {
cbData uint32
pbData *byte
}
func NewBlob(d []byte) *dataBlob {
if len(d) == 0 {
return &dataBlob{}
}
return &dataBlob{
pbData: &d[0],
cbData: uint32(len(d)),
}
}
func (b *dataBlob) ToByteArray() []byte {
d := make([]byte, b.cbData)
copy(d, (*[1 << 30]byte)(unsafe.Pointer(b.pbData))[:])
return d
}
// DPAPI (Data Protection Application Programming Interface)
// is a simple cryptographic application programming interface
// available as a built-in component in Windows 2000 and
// later versions of Microsoft Windows operating systems
// chrome < 80 https://chromium.googlesource.com/chromium/src/+/76f496a7235c3432983421402951d73905c8be96/components/os_crypt/os_crypt_win.cc#82
func DPAPI(data []byte) ([]byte, error) {
dllCrypt := syscall.NewLazyDLL("Crypt32.dll")
dllKernel := syscall.NewLazyDLL("Kernel32.dll")
procDecryptData := dllCrypt.NewProc("CryptUnprotectData")
procLocalFree := dllKernel.NewProc("LocalFree")
var outBlob dataBlob
r, _, err := procDecryptData.Call(uintptr(unsafe.Pointer(NewBlob(data))), 0, 0, 0, 0, 0, uintptr(unsafe.Pointer(&outBlob)))
if r == 0 {
return nil, err
}
defer procLocalFree.Call(uintptr(unsafe.Pointer(outBlob.pbData)))
return outBlob.ToByteArray(), nil
}