diff --git a/TinyEncryptSpecV1.1.md b/TinyEncryptSpecV1.1.md
index 5856f7d..d02414f 100644
--- a/TinyEncryptSpecV1.1.md
+++ b/TinyEncryptSpecV1.1.md
@@ -12,27 +12,27 @@ File format:
 
 Meta format:
 
-| Field   | Type    | Comment                                      |
-|---------|---------|----------------------------------------------|
-| version | String  | Constant value: `1.1`                        |
-| created | Long    | Created time, Unix Epoch                     |
-| userAgent | String  | User Agent, e.g. `TinyEncrypt v0.5.1@MacOS`  |
-| comment | String  | `optional` Plain text comment                |
-| encryptedComment | String  | `optional` Encrypted comment                 |
-| encryptedMeta | String | `optional` Encrypted Meta Data               |
-| pgpEnvelop | String  | `deprecated` PGP Publickey Encrypted DataKey |
-| pgpFingerprint | String  | `deprecated` Hex(Sha256(PGP Publickey))      |
-| envelop | String  | `deprecated` KMS Encrypted DataKey           |
+| Field   | Type      | Comment                                      |
+|---------|-----------|----------------------------------------------|
+| version | String    | Constant value: `1.1`                        |
+| created | Long      | Created time, Unix Epoch                     |
+| userAgent | String    | User Agent, e.g. `TinyEncrypt v0.5.1@MacOS`  |
+| comment | String    | `optional` Plain text comment                |
+| encryptedComment | String    | `optional` Encrypted comment                 |
+| encryptedMeta | String    | `optional` Encrypted Meta Data               |
+| pgpEnvelop | String    | `deprecated` PGP Publickey Encrypted DataKey |
+| pgpFingerprint | String    | `deprecated` Hex(Sha256(PGP Publickey))      |
+| envelop | String    | `deprecated` KMS Encrypted DataKey           |
 | envelops | Envelop[] | Envelop Array                                |
-| nonce | byte[]  | GCM Nonce                                    |
-| fileLength | Long    | File Length                                  |
-| fileLastModified | Long    | File Last Modified, Unix Epoch               |
-| compress | Boolean | Compressed or Not                            |
+| nonce | String    | `base64` GCM Nonce                            |
+| fileLength | Long      | File Length                                  |
+| fileLastModified | Long      | File Last Modified, Unix Epoch               |
+| compress | Boolean   | Compressed or Not                            |
 
 Envelop format:
 
-| Field        | Type   | Comment           |
-|--------------|--------|-------------------|
-| type         | String | `kms`, `pgp`, ... |
-| kid          | String | Key ID            |
-| encryptedKey | String | Encrypted Key     |
\ No newline at end of file
+| Field        | Type   | Comment                |
+|--------------|--------|------------------------|
+| type         | String | `kms`, `pgp`, ...      |
+| kid          | String | Key ID                 |
+| encryptedKey | String | `base64` Encrypted Key |
\ No newline at end of file