refactor: remove unused aes package

pkg/crypt/aes.go

@@ -1,81 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/rand"
-	"encoding/base64"
-	"encoding/hex"
-	"errors"
-	"io/ioutil"
-	"log"
-	"strings"
-)
-
-var (
-	ErrInvalidBlockSize = errors.New("[!] Invalid block size")
-
-	ErrInvalidPKCS7Data = errors.New("[!] Invalid PKCS7 Data (Empty or Not Padded)")
-
-	ErrInvalidPKCS7Padding = errors.New("[!] Invalid padding on input")
-)
-
-func GetRandBuffer(size int) []byte {
-	buf := make([]byte, size)
-	_, err := rand.Read(buf)
-	if err != nil {
-		log.Fatal(err)
-	}
-	return buf
-}
-
-func Pkcs7Pad(b []byte, blocksize int) ([]byte, error) {
-	if blocksize <= 0 {
-		return nil, ErrInvalidBlockSize
-	}
-	if b == nil || len(b) == 0 {
-		return nil, ErrInvalidPKCS7Data
-	}
-	n := blocksize - (len(b) % blocksize)
-	pb := make([]byte, len(b)+n)
-	copy(pb, b)
-	copy(pb[len(b):], bytes.Repeat([]byte{byte(n)}, n))
-	return pb, nil
-}
-
-func EncryptBuffer(buf []byte) ([]byte, []byte, []byte) {
-	var rawbyte []byte
-	key := GetRandBuffer(32)
-	iv := GetRandBuffer(16)
-
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	paddedInput, err := Pkcs7Pad([]byte(rawbyte), aes.BlockSize)
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	encBuf := make([]byte, len(paddedInput))
-	encMode := cipher.NewCBCEncrypter(block, iv)
-	encMode.CryptBlocks(encBuf, paddedInput)
-
-	return iv, key, encBuf
-}
-
-func Encrypt(scFile string) string {
-	src, _ := ioutil.ReadFile(scFile)
-	dst := make([]byte, hex.EncodedLen(len(src)))
-	hex.Encode(dst, src)
-	r := base64.StdEncoding.EncodeToString(dst)
-
-	iv, key, encBuf := EncryptBuffer([]byte(r))
-	b64EncBuf := base64.StdEncoding.EncodeToString(encBuf)
-	b64Key := base64.StdEncoding.EncodeToString(key)
-	b64IV := base64.StdEncoding.EncodeToString(iv)
-
-	return strings.Join([]string{b64IV, b64Key, b64EncBuf}, ":")
-}