42 lines
773 B
Go
42 lines
773 B
Go
package crypto
|
|
|
|
import (
|
|
"crypto/cipher"
|
|
"crypto/md5"
|
|
"encoding/hex"
|
|
"fmt"
|
|
|
|
"github.com/mathismqn/godeez/internal/config"
|
|
"golang.org/x/crypto/blowfish"
|
|
)
|
|
|
|
func GetBlowfishKey(songID string) []byte {
|
|
hash := md5.Sum([]byte(songID))
|
|
hashHex := fmt.Sprintf("%x", hash)
|
|
|
|
key := []byte(config.Cfg.SecretKey)
|
|
for i := 0; i < len(hash); i++ {
|
|
key[i] = key[i] ^ hashHex[i] ^ hashHex[i+16]
|
|
}
|
|
|
|
return key
|
|
}
|
|
|
|
func DecryptBlowfish(data, key []byte) ([]byte, error) {
|
|
block, err := blowfish.NewCipher(key)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
iv, err := hex.DecodeString(config.Cfg.IV)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
mode := cipher.NewCBCDecrypter(block, iv)
|
|
decrypted := make([]byte, len(data))
|
|
mode.CryptBlocks(decrypted, data)
|
|
|
|
return decrypted, nil
|
|
}
|