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Application made available as a CLI tool.
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‎App.go

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@@ -1,12 +1,12 @@
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package main
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import (
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"fes/fesserver"
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"fes/cli/cmd"
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"fmt"
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)
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func main() {
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fmt.Println("App starts from here...")
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fesserver.Start()
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cmd.Execute()
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}

‎README.md

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@@ -9,12 +9,42 @@ The encryption and decryption operation are exposed using REST APIs(The usage is
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1. Clone the project
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2. Open the folder in command prompt
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3. Run "go build"
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4. Run "fes"
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5. For encrypting a file, send a HTTP GET request using the url: http://localhost:8080/encrypt?filename=YourFileName. The server creates a file named as YourFileName.enc at the same location where the original file is present.
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6. For decrypting a file, send a HTTP GET request using the url: http://localhost:8080/decrypt?filename=YourFileName. In this case, only the name of the file and not the ".enc" should be sent through the url. The file is decrypted and stored at the same location of the encrypted file.
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4. The application is shipped as a CLI tool. User can perform encryption and decryption of files from terminal by simply running the commands.
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<br />
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### Encryption
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* Run the below command to encrypt a file.
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```
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fes encryptfile --filepath=</path/to/your/file>
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```
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<br />
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### Decryption
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* Run the below command to encrypt a file.
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```
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fes encryptfile --filepath=</path/to/your/file>
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```
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<br />
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5. The application provides a way to set up a HTTP server through the CLI commands.
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<br />
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Run the below command to setup the HTTP server.
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```
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fes startServer
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```
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The above command will spawn up a HTTP server with encryption and decryption endpoints.
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<br />
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=> For encrypting a file, send a HTTP GET request using the url: http://localhost:8080/encrypt?filename=YourFileName. The server creates a file named as YourFileName.enc at the same location where the original file is present.
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<br />
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=> For decrypting a file, send a HTTP GET request using the url: http://localhost:8080/decrypt?filename=YourFileName. In this case, only the name of the file and not the ".enc" should be sent through the url. The file is decrypted and stored at the same location of the encrypted file.
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## Dependencies
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1. [gorilla-mux](https://github.com/gorilla/mux): A powerful HTTP router and URL matcher for building Go web servers with
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1. [gorilla-mux](https://github.com/gorilla/mux): A powerful HTTP router and URL matcher for building Go web servers with.
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2. [cobra-CLI](https://github.com/spf13/cobra): Cobra is both a library for creating powerful modern CLI applications as well as a program to generate applications and command files.
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NOTE:- Indirect dependencies are not listed here.
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<br>
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‎S_DES/DESEncryptor.go

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@@ -486,7 +486,9 @@ func (engine *DesEncryptor) DecryptFile(filename string) bool {
486486
log.Println("Decryption procedure started...")
487487

488488
engine.decryptionFilename = filename
489-
engine.encryptionFilename = filename + ".enc"
489+
if filename[len(filename)-4:] != ".enc" {
490+
engine.encryptionFilename = filename + ".enc"
491+
}
490492
var err error
491493
engine.decryptionFileConnector, err = os.Create(engine.decryptionFilename)
492494
if err != nil {

‎cli/LICENSE

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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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‎cli/cmd/decryptfile.go

+61
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1+
/*
2+
Copyright © 2021 NAME HERE <EMAIL ADDRESS>
3+
4+
Licensed under the Apache License, Version 2.0 (the "License");
5+
you may not use this file except in compliance with the License.
6+
You may obtain a copy of the License at
7+
8+
http://www.apache.org/licenses/LICENSE-2.0
9+
10+
Unless required by applicable law or agreed to in writing, software
11+
distributed under the License is distributed on an "AS IS" BASIS,
12+
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
See the License for the specific language governing permissions and
14+
limitations under the License.
15+
*/
16+
package cmd
17+
18+
import (
19+
"fmt"
20+
golog "log"
21+
22+
"github.com/spf13/cobra"
23+
)
24+
25+
// decryptfileCmd represents the decryptfile command
26+
var decryptfileCmd = &cobra.Command{
27+
Use: "decryptfile",
28+
Short: "A brief description of your command",
29+
Long: `A longer description that spans multiple lines and likely contains examples
30+
and usage of using your command. For example:
31+
32+
Cobra is a CLI library for Go that empowers applications.
33+
This application is a tool to generate the needed files
34+
to quickly create a Cobra application.`,
35+
Run: func(cmd *cobra.Command, args []string) {
36+
fmt.Println("decryptfile called")
37+
absFilePath, err := cmd.Flags().GetString("filepath")
38+
if err != nil || absFilePath == "" {
39+
golog.Fatalln(err, ":: file path must be specified. can be specified using '--filepath' or '-f' flag.")
40+
}
41+
42+
golog.Println("WARN: filepath must be absolute. Currently relative file-paths are not supported.")
43+
crypter.Init("des_input.txt")
44+
crypter.DecryptFile(absFilePath)
45+
},
46+
}
47+
48+
func init() {
49+
rootCmd.AddCommand(decryptfileCmd)
50+
decryptfileCmd.Flags().StringP("filepath", "f", "", "Absolute path of the file to be decrypted")
51+
52+
// Here you will define your flags and configuration settings.
53+
54+
// Cobra supports Persistent Flags which will work for this command
55+
// and all subcommands, e.g.:
56+
// decryptfileCmd.PersistentFlags().String("foo", "", "A help for foo")
57+
58+
// Cobra supports local flags which will only run when this command
59+
// is called directly, e.g.:
60+
// decryptfileCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
61+
}

‎cli/cmd/encryptfile.go

+59
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1+
/*
2+
Copyright © 2021 NAME HERE <EMAIL ADDRESS>
3+
4+
Licensed under the Apache License, Version 2.0 (the "License");
5+
you may not use this file except in compliance with the License.
6+
You may obtain a copy of the License at
7+
8+
http://www.apache.org/licenses/LICENSE-2.0
9+
10+
Unless required by applicable law or agreed to in writing, software
11+
distributed under the License is distributed on an "AS IS" BASIS,
12+
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
See the License for the specific language governing permissions and
14+
limitations under the License.
15+
*/
16+
package cmd
17+
18+
import (
19+
golog "log"
20+
21+
"github.com/spf13/cobra"
22+
)
23+
24+
// encryptfileCmd represents the encryptfile command
25+
var encryptfileCmd = &cobra.Command{
26+
Use: "encryptfile",
27+
Short: "A brief description of your command",
28+
Long: `A longer description that spans multiple lines and likely contains examples
29+
and usage of using your command. For example:
30+
31+
Cobra is a CLI library for Go that empowers applications.
32+
This application is a tool to generate the needed files
33+
to quickly create a Cobra application.`,
34+
Run: func(cmd *cobra.Command, args []string) {
35+
absFilePath, err := cmd.Flags().GetString("filepath")
36+
if err != nil || absFilePath == "" {
37+
golog.Fatalln(err, ":: file path must be specified. can be specified using '--filepath' or '-f' flag.")
38+
}
39+
40+
golog.Println("WARN: filepath must be absolute. Currently relative file-paths are not supported.")
41+
crypter.Init("des_input.txt")
42+
crypter.EncryptFile(absFilePath)
43+
},
44+
}
45+
46+
func init() {
47+
rootCmd.AddCommand(encryptfileCmd)
48+
encryptfileCmd.Flags().StringP("filepath", "f", "", "Absolute path of the file to be encrypted")
49+
50+
// Here you will define your flags and configuration settings.
51+
52+
// Cobra supports Persistent Flags which will work for this command
53+
// and all subcommands, e.g.:
54+
// encryptfileCmd.PersistentFlags().String("foo", "", "A help for foo")
55+
56+
// Cobra supports local flags which will only run when this command
57+
// is called directly, e.g.:
58+
// encryptfileCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
59+
}

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