From 2bca147e3d9d4f4ed4cfb0d3fdbc1fe58ce29c63 Mon Sep 17 00:00:00 2001
From: Hatter Jiang <jht5945@gmail.com>
Date: Fri, 10 Feb 2023 21:51:08 +0800
Subject: [PATCH] feat: update readme

---
 README.md | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 89 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index c25f8eb..9563ecf 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,92 @@ Debug logging:
 
 ```shell
 $ java -jar -Dcommons.log.debug=true tiny-encrypt.jar ...
-```
\ No newline at end of file
+```
+
+Encrypt file:
+
+```shell
+$ tiny-encrypt -e test.txt 
+[INFO] Start processing file: test.txt, 1 of 1
+[INFO] Get data key from kms, key name: prod_ec_key, with sign: false ...
+Encrypting, Processed: 12, Speed: 2.93KB/s
+[INFO] Encrypt file success: test.txt
+```
+
+> Skip envelop data key: `--skip-envelop`
+
+Show encrypted file info:
+
+```shell
+$ tiny-encrypt -I test.txt.tinyenc 
+[INFO] Tiny Encrypt File Info
+File..............: test.txt.tinyenc
+File size.........: 12 byte(s)
+Enc file summary..: Version: 1.0, Agent: TinyEncrypt v0.5.1@MacOS
+Last modified.....: Fri Feb 10 00:50:07 CST 2023
+Enc file created..: Fri Feb 10 01:16:12 CST 2023
+Envelops..........: KMS: YES, PGP: YES
+PGP fingerprint...: de5a99c239a82adf039982cb6319abcb95f44cfc76a5027ae6f7819cfc5fde7c
+Encrypted comment.: NO
+```
+
+Decrypt file:
+
+```shell
+$ tiny-encrypt -d test.txt.tinyenc 
+[INFO] Start processing file: test.txt.tinyenc, 1 of 1
+[INFO] Start: /Users/hatterjiang/.cargo/bin/card-cli
+[INFO] Finished command
+[INFO] Decrypt local private key success!
+[INFO] Decrypt data key ...
+Decrypting, Processed: 12, Speed: 3.91KB/s
+[INFO] Decrypt file success: test.txt.tinyenc
+```
+
+Decrypt file with OpenPGP card:
+
+```shell
+$ tiny-encrypt -d --pgp test.txt.tinyenc 
+[INFO] Start processing file: test.txt.tinyenc, 1 of 1
+Input PGP user PIN: 
+[INFO] Start: /Users/hatterjiang/.cargo/bin/card-cli
+[INFO] Finished command
+Decrypting, Processed: 12, Speed: 2.93KB/s
+[INFO] Decrypt file success: test.txt.tinyenc
+```
+
+Use alias:
+
+```shell
+alias tiny-encrypt='java -jar ~/bin/tiny-encrypt.jar'
+alias tiny-encrypt-debug='java -jar -Dcommons.log.debug=true ~/bin/tiny-encrypt.jar'
+```
+
+File ext: `*.tinyenc`
+
+File format:
+
+```text
+[TAG; 2 bytes; short; BE]
+[LENGTH; 4 bytes; int; BE]
+[META; LENGTH bytes]
+[ENCRYPTED_DATA; n bytes; AES/GCM]
+```
+
+Meta format:
+
+| Field   | Type    | Comment                                     |
+|---------|---------|---------------------------------------------|
+| version | String  | Constant value: `1.0`                       |
+| created | Long    | Created time, Unix Epoch                    |
+| userAgent | String  | User Agent, e.g. `TinyEncrypt v0.5.1@MacOS` |
+| comment | String  | Plain text comment                          |
+| encryptedComment | String  | Encrypted comment                           |
+| pgpEnvelop | String  | PGP Publickey Encrypted DataKey             |
+| pgpFingerprint | String  | Hex(Sha256(PGP Publickey))                  |
+| envelop | String  | KMS Encrypted DataKey                       |
+| nonce | byte[]  | GCM Nonce                                   |
+| fileLength | Long    | File Length                                 |
+| fileLastModified | Long    | File Last Modified                          |
+| compress | Boolean | Compress or not                             |
+