Files
HackBrowserData/crypto/crypto_windows.go
T
ᴍᴏᴏɴD4ʀᴋ 591b97ce6d feat: Refactor crypto decryption functions for consistency and error handling (#302)
* feat: Refactor crypto decryption functions for consistency and error handling

- Close #301
- Refactored and renamed decryption functions across multiple files for consistency
- Updated cookie sorting method to sort in descending order
- Added new encryption functions for AES in CBC and GCM modes and DES in CBC mode
- Added error handling to decryption functions and created new error variables for invalid ciphertext length and decode failures
- Test cases added for encryption and decryption functions
- Removed unused code and imports.

* chore: Add new words to .typos.toml dictionary

- Add new terms to `.typos.toml` dictionary
- Improve code formatting and readability
- Refactor functions for better performance
- Update comments and documentation
- Resolve minor bugs and errors

* refactor: Refactor crypto package for better structure and readability

- Refactored and cleaned up crypto package code for better readability
- Renamed `ToByteArray` method to `bytes` for consistency
- Modified `DecryptWithDPAPI` method to use `outBlob.bytes()` for efficiency
- Added comments and removed unused methods in `loginPBE`
- Refactored `nssPBE` and `metaPBE` Decrypt methods to use `deriveKeyAndIV` helper method
- Improved overall maintainability and organization of codebase

* refactor: Refactor firefox password encryption and decryption.

- Implement ASN1PBE interface with various PBE struct types and encryption/decryption methods
- Fix naming and remove unused variables in browsingdata and crypto files
- Add tests for ASN1PBE implementation using external assertion package
- Refactor and improve error handling in firefox file functions related to master key retrieval
- Add input validation and AES-GCM encryption function to crypto file
2024-01-27 23:15:05 +08:00

87 lines
2.2 KiB
Go

//go:build windows
package crypto
import (
"fmt"
"syscall"
"unsafe"
)
const (
// Assuming the nonce size is 12 bytes and the minimum encrypted data size is 3 bytes
minEncryptedDataSize = 15
nonceSize = 12
)
func DecryptWithChromium(key, ciphertext []byte) ([]byte, error) {
if len(ciphertext) < minEncryptedDataSize {
return nil, ErrCiphertextLengthIsInvalid
}
nonce := ciphertext[3 : 3+nonceSize]
encryptedPassword := ciphertext[3+nonceSize:]
return AESGCMDecrypt(key, nonce, encryptedPassword)
}
// DecryptWithYandex decrypts the password with AES-GCM
func DecryptWithYandex(key, ciphertext []byte) ([]byte, error) {
if len(ciphertext) < minEncryptedDataSize {
return nil, ErrCiphertextLengthIsInvalid
}
// remove Prefix 'v10'
// gcmBlockSize = 16
// gcmTagSize = 16
// gcmMinimumTagSize = 12 // NIST SP 800-38D recommends tags with 12 or more bytes.
// gcmStandardNonceSize = 12
nonce := ciphertext[3 : 3+nonceSize]
encryptedPassword := ciphertext[3+nonceSize:]
return AESGCMDecrypt(key, nonce, encryptedPassword)
}
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) bytes() []byte {
d := make([]byte, b.cbData)
copy(d, (*[1 << 30]byte)(unsafe.Pointer(b.pbData))[:])
return d
}
// DecryptWithDPAPI (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
func DecryptWithDPAPI(ciphertext []byte) ([]byte, error) {
crypt32 := syscall.NewLazyDLL("Crypt32.dll")
kernel32 := syscall.NewLazyDLL("Kernel32.dll")
unprotectDataProc := crypt32.NewProc("CryptUnprotectData")
localFreeProc := kernel32.NewProc("LocalFree")
var outBlob dataBlob
r, _, err := unprotectDataProc.Call(
uintptr(unsafe.Pointer(newBlob(ciphertext))),
0, 0, 0, 0, 0,
uintptr(unsafe.Pointer(&outBlob)),
)
if r == 0 {
return nil, fmt.Errorf("CryptUnprotectData failed with error %w", err)
}
defer localFreeProc.Call(uintptr(unsafe.Pointer(outBlob.pbData)))
return outBlob.bytes(), nil
}