feat: still working

This commit is contained in:
2024-09-01 14:20:27 +08:00
parent 02584eee70
commit 1971f37a9d
5 changed files with 166 additions and 101 deletions

40
main.go
View File

@@ -1,11 +1,13 @@
package main
import (
"fmt"
"math"
"crypto/aes"
"encoding/binary"
"encoding/hex"
"crypto/aes"
"fmt"
"math"
"git.hatter.ink/hatter/go-afero-encfs/encfs"
"github.com/spf13/afero"
)
@@ -14,7 +16,7 @@ func main() {
osFs := afero.NewOsFs()
fmt.Println(osFs)
key := []byte {
key := []byte{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}
cipher, err := aes.NewCipher(key)
@@ -23,10 +25,10 @@ func main() {
return
}
dest := []byte {
dest := []byte{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}
src := []byte {
src := []byte{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}
cipher.Encrypt(dest, src)
@@ -35,7 +37,6 @@ func main() {
fmt.Println(hex.EncodeToString(src))
fmt.Println(hex.EncodeToString(dest))
fmt.Println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
nonce, err := hex.DecodeString("0011223344556677ffffffffffffffff")
if err != nil {
@@ -58,12 +59,11 @@ func main() {
newNonce = nonceAdd(newNonce, 1)
fmt.Println(hex.EncodeToString(newNonce))
fmt.Println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>")
test_key := []byte {
test_key := []byte{
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
}
test_iv := []byte {
test_iv := []byte{
1, 2, 3, 4, 5, 6, 7, 8, 0, 0, 0, 0, 0, 0, 0, 0,
}
plaintext := "hello world.hello world.hello world.hello world.hello world.hello world."
@@ -80,13 +80,27 @@ func main() {
}
// SHOULD BE: 84ad8d80732490c061177a58bd26d032d6fcff2e66f9afe3cf95717485d3a4485d4a2a7bd835df3d0756b8192e3bf5a287ad8dd81942c43bc812c82d666ebbb34df4e2a5069467d9
fmt.Println(hex.EncodeToString(plaintextBytes))
encFs := encfs.NewEncFs()
encFile, err := encFs.Create("test")
if err != nil {
fmt.Println(err)
return
}
len, err := encFile.Write([]byte("hello world"))
if err != nil {
fmt.Println(err)
return
}
fmt.Println("write len: ", len)
}
func generateCtrEncryptBytes(key, iv []byte, offset, len int64) ([]byte, error) {
endOffset := offset + len
encryptStartOffset := (offset / 16) * 16
encryptEndOffset := (endOffset / 16) * 16
if endOffset % 16 > 0 {
if endOffset%16 > 0 {
encryptEndOffset += 16
}
blocksCount := int((encryptEndOffset - encryptStartOffset) / 16)
@@ -95,13 +109,13 @@ func generateCtrEncryptBytes(key, iv []byte, offset, len int64) ([]byte, error)
if err != nil {
return nil, err
}
encryptBytes := make([]byte, blocksCount * 16)
encryptBytes := make([]byte, blocksCount*16)
for i := 0; i < blocksCount; i++ {
encNonce := nonceAdd(iv, uint64(i))
cipher.Encrypt(encryptBytes[i*16:(i+1)*16], encNonce)
}
// fmt.Println("XX ", hex.EncodeToString(encryptBytes))
return encryptBytes[offset-encryptStartOffset:offset-encryptStartOffset+len], nil
return encryptBytes[offset-encryptStartOffset : offset-encryptStartOffset+len], nil
}
func nonceAdd(nonce []byte, incrementValue uint64) []byte {