/
v1.go
46 lines (39 loc) · 895 Bytes
/
v1.go
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package v1
import (
"encoding/json"
"fmt"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/ieee0824/cryptex"
"github.com/ieee0824/cryptex/kms"
"io/ioutil"
)
type Encrypter struct {
c *cryptex.Cryptex
}
func New(s *session.Session, keyID string) *Encrypter {
return &Encrypter{
cryptex.New(kms.New(s).SetKey(keyID)),
}
}
func (e *Encrypter) Encrypt(keyID, fileName string) error {
var plain map[string]interface{}
bin, err := ioutil.ReadFile(fileName)
if err != nil {
return err
}
if err := json.Unmarshal(bin, &plain); err != nil {
return err
}
if _, ok := plain["encryption_type"]; ok {
return fmt.Errorf("%s is already encrypted", fileName)
}
cipher, err := e.c.Encrypt(plain)
if err != nil {
return err
}
chipherBin, err := json.MarshalIndent(cipher, "", " ")
if err != nil {
return err
}
return ioutil.WriteFile(fileName, chipherBin, 0644)
}