mirror of
https://github.com/warmbly/warmbly.git
synced 2026-08-19 16:01:16 +00:00
Matthew Meszaros
32 lines
626 B
Go
32 lines
626 B
Go
package cipher
|
|
|
|
import (
|
|
"context"
|
|
"crypto/aes"
|
|
"crypto/cipher"
|
|
"crypto/rand"
|
|
"encoding/base64"
|
|
"io"
|
|
)
|
|
|
|
func (c *Cipher) Encrypt(ctx context.Context, s string) (string, error) {
|
|
if s == "" {
|
|
return "", nil // handle empty string
|
|
}
|
|
block, err := aes.NewCipher(c.plainDEK)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
gcm, err := cipher.NewGCM(block)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
nonce := make([]byte, gcm.NonceSize())
|
|
if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
|
|
return "", err
|
|
}
|
|
ciphertext := gcm.Seal(nonce, nonce, []byte(s), nil)
|
|
|
|
return base64.StdEncoding.EncodeToString(ciphertext), nil
|
|
}
|