diff options
| -rw-r--r-- | cryptfs/openssl_aead.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/cryptfs/openssl_aead.go b/cryptfs/openssl_aead.go index 1ec7c48..c70bd1f 100644 --- a/cryptfs/openssl_aead.go +++ b/cryptfs/openssl_aead.go @@ -25,7 +25,11 @@ func (be opensslGCM) NonceSize() int { // time, for a given key. func (be opensslGCM) Seal(dst, nonce, plaintext, data []byte) []byte { - cipherBuf := bytes.NewBuffer(dst) + // Preallocate output buffer + var cipherBuf bytes.Buffer + cipherBuf.Grow(len(dst) + len(plaintext) + AUTH_TAG_LEN) + // Output will be appended to dst + cipherBuf.Write(dst) ectx, err := openssl.NewGCMEncryptionCipherCtx(KEY_LEN*8, nil, be.key, nonce) if err != nil { |