# tiny-encrypt-java

Tiny encrypt implemented by Java

Debug logging:

```shell
$ java -jar -Dcommons.log.debug=true tiny-encrypt.jar ...
```

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
```

Create file from text window:

```shell
$ tiny-encrypt --create FILE
```

Show file in text window:

```shell
$ tiny-encrypt -d --show FILE.tinyenc
```

Edit file in text window:

```shell
$ tiny-encrypt -d --edit FILE.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; Always 1]
[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                             |