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Ron Rise
2024-04-20 10:33:41 -04:00
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.github/ISSUE_TEMPLATE/bug_report.md vendored Normal file
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---
name: Bug report
about: Create a report to help us improve
title: ''
labels: ''
assignees: ''
---
**Describe the bug**
A clear and concise description of what the bug is.
**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
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**Additional context**
Add any other context about the problem here.

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.github/ISSUE_TEMPLATE/feature_request.md vendored Normal file
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---
name: Feature request
about: Suggest an idea for this project
title: ''
labels: ''
assignees: ''
---
**Is your feature request related to a problem? Please describe.**
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
**Describe the solution you'd like**
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**Describe alternatives you've considered**
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**Additional context**
Add any other context or screenshots about the feature request here.

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.gitignore vendored Normal file
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.idea/
*.pem*
rsa-file-encryption
dist/

201
LICENSE Normal file
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README.md Normal file
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# RSA Public/Private Key File Encryption
## Build
Nothing special is needed to build.
```
go build --ldflags="-X 'github.com/siteworxpro/rsa-file-encryption/printer.Version=$(git describe --tags --abbrev=0)'"
```
## Generating Keys
Generates a set of RSA key pairs. Default size is 4096 bits. Minimum size is 1024 bits and maximum is 16384 bits
```
NAME:
rsa-file-encryption generate-keypair - generate a keypair
USAGE:
rsa-file-encryption generate-keypair [command options] [arguments...]
OPTIONS:
--size value, -s value the size of the private key (default: 4096)
--file value, -f value the path to the private key file
--force, -F overwrite the private key file (default: false)
--help, -h show help
```
```bash
./rsa-file-encryption generate-keypair -s 4096 -f my-key
```
## Encrypting
Encrypt a file with a public RSA Key
```
NAME:
rsa-file-encryption encrypt - encrypt a file
USAGE:
rsa-file-encryption encrypt [command options] [arguments...]
OPTIONS:
--file value, -f value file to encrypt
--public-key value, -p value public key path
--force, -F overwrite the encrypted file (default: false)
--help, -h show help
```
```bash
./rsa-file-encryption encrypt --file file_to_encrypt.txt --public-key my-key.pub
```
## Decrypting
Decrypt a file with a private RSA key
```
NAME:
rsa-file-encryption decrypt - decrypt a file
USAGE:
rsa-file-encryption decrypt [command options] [arguments...]
OPTIONS:
--file value, -f value file to decrypt
--private-key value, -p value private key path
--out value, -o value output file name
--force, -F overwrite the encrypted file (default: false)
--help, -h show help
```
```bash
./rsa-file-encryption decrypt --file file_to_encrypt.txt.enc --out file_decrypted --private-key my-key
```

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build.sh Executable file
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#!/usr/bin/env bash
go install
for distro in $(go tool dist list)
do
arrIN=(${distro//\// })
if [[ ${arrIN[0]} == 'linux' || ${arrIN[0]} == 'darwin' || ${arrIN[0]} == 'freebsd' || ${arrIN[0]} == 'windows' ]]; then
echo "Building $distro..."
GOOS=${arrIN[0]} GOARCH=${arrIN[1]} go build --ldflags="-X 'github.com/siteworxpro/rsa-file-encryption/printer.Version=$(git describe --tags --abbrev=0)'" -o dist/rsa-file-encryption_${arrIN[0]}_${arrIN[1]}
fi
done

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commands/decrypt.go Normal file
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package commands
import (
"fmt"
"github.com/siteworxpro/rsa-file-encryption/crypt"
"github.com/siteworxpro/rsa-file-encryption/printer"
"os"
)
func Decrypt(privateKeyPath string, filePath string, outFile string, force bool) error {
if _, err := os.Stat(privateKeyPath); err != nil {
return err
}
if _, err := os.Stat(filePath); err != nil {
return err
}
if _, err := os.Stat(outFile); err == nil && !force {
return fmt.Errorf("decrypted file already exists (--force, -F) to overwrite")
}
p := printer.NewPrinter()
encryptedFile := crypt.EncryptedFile{}
p.LogInfo("Reading Private Key...")
err := encryptedFile.OsReadPrivateKey(privateKeyPath)
if err != nil {
return err
}
p.LogInfo("Reading and decrypting file...")
c := make(chan bool)
go p.LogSpinner("Decrypting...", c)
err = encryptedFile.OsReadCipherTextFile(filePath)
if err != nil {
return err
}
c <- true
p.LogInfo("Writing un-encrypted file...")
err = encryptedFile.WriteDecryptedFileToDisk(outFile)
if err != nil {
return err
}
p.LogSuccess("Done!")
return nil
}

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commands/encrypt.go Normal file
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package commands
import (
"fmt"
"github.com/siteworxpro/rsa-file-encryption/crypt"
"github.com/siteworxpro/rsa-file-encryption/printer"
"os"
)
func Encrypt(publicKeyPath string, filePath string, force bool) error {
if _, err := os.Stat(publicKeyPath); err != nil {
return err
}
if _, err := os.Stat(filePath); err != nil {
return err
}
if _, err := os.Stat(filePath + ".enc"); err == nil && !force {
return fmt.Errorf("encrypted file already exists (--force, -F) to overwrite")
}
p := printer.NewPrinter()
encryptedFile := crypt.EncryptedFile{}
p.LogInfo("Reading public key...")
err := encryptedFile.OsReadPublicKey(publicKeyPath)
if err != nil {
return err
}
size := encryptedFile.PublicKey.Size()
if size < 256 {
return fmt.Errorf("key to weak. use stronger key > 2048 bits")
}
p.LogInfo("Reading file to encrypt...")
err = encryptedFile.OsReadPlainTextFile(filePath)
if err != nil {
return err
}
c := make(chan bool)
go p.LogSpinner("Encrypting...", c)
err = encryptedFile.GenerateSymmetricKey()
if err != nil {
return err
}
err = encryptedFile.EncryptFile()
if err != nil {
return err
}
c <- true
p.LogInfo("Encrypted file successfully")
p.LogInfo("Writing file...")
err = encryptedFile.WriteEncryptFileToDisk(filePath)
if err != nil {
return err
}
p.LogSuccess("Done!")
return nil
}

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commands/generate-keypair.go Normal file
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package commands
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
"github.com/siteworxpro/rsa-file-encryption/printer"
"os"
)
func GenerateKeypair(bitSize uint, path string, overwrite bool) error {
if bitSize == 0 {
bitSize = 4096
}
if bitSize < 2048 {
return fmt.Errorf("key to weak. size must be greater than 2048")
}
if bitSize > 16384 {
return fmt.Errorf("key to large. size must be less than 16384")
}
if _, err := os.Stat(path); err == nil && !overwrite {
return fmt.Errorf("key file already exists - use another filename or -force (-F) to overwrite")
}
p := printer.NewPrinter()
c := make(chan bool)
go p.LogSpinner("Generating RSA key...", c)
key, err := rsa.GenerateKey(rand.Reader, int(bitSize))
c <- true
if err != nil {
return err
}
pub := key.Public()
keyPEM := pem.EncodeToMemory(
&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(key),
},
)
pubPEM := pem.EncodeToMemory(
&pem.Block{
Type: "RSA PUBLIC KEY",
Bytes: x509.MarshalPKCS1PublicKey(pub.(*rsa.PublicKey)),
},
)
p.LogInfo("Writing private key...")
err = os.WriteFile(path, keyPEM, 0600)
if err != nil {
return err
}
p.LogInfo("Writing public key...")
err = os.WriteFile(path+".pub", pubPEM, 0644)
if err != nil {
return err
}
p.LogSuccess("Done!")
return nil
}

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crypt/file.go Normal file
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package crypt
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"crypto/rand"
"crypto/rsa"
"crypto/subtle"
"fmt"
"os"
)
type EncryptedFile struct {
ciphertext []byte
plainText []byte
nonce []byte
privatePem []byte
PublicPem []byte
privateKey *rsa.PrivateKey
PublicKey *rsa.PublicKey
symmetricKey []byte
symmetricKeyEnc []byte
}
func (f *EncryptedFile) packFile() []byte {
file := append(f.nonce, f.ciphertext...)
return append(file, f.symmetricKeyEnc...)
}
func (f *EncryptedFile) EncryptFile() error {
c, err := aes.NewCipher(f.symmetricKey)
if err != nil {
return err
}
f.nonce = make([]byte, aes.BlockSize)
_, err = rand.Read(f.nonce)
if err != nil {
return err
}
cbc := cipher.NewCBCEncrypter(c, f.nonce)
ciphertext := make([]byte, len(f.plainText))
ciphertext = pad(ciphertext, aes.BlockSize)
plaintextP := pad(f.plainText, aes.BlockSize)
cbc.CryptBlocks(ciphertext, plaintextP)
f.ciphertext = ciphertext
return nil
}
func (f *EncryptedFile) OsReadPlainTextFile(path string) error {
plaintext, err := os.ReadFile(path)
if err != nil {
return err
}
f.plainText = plaintext
return nil
}
func (f *EncryptedFile) WriteEncryptFileToDisk(filePath string) error {
packed := f.packFile()
err := os.WriteFile(filePath+".enc", packed, 0600)
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) WriteDecryptedFileToDisk(filePath string) error {
err := os.WriteFile(filePath, f.plainText, 0600)
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) unpackFileAndDecrypt(packedFile []byte) error {
keyLen := f.privateKey.Size()
lenWithoutKey := len(packedFile) - keyLen
packedFile, f.symmetricKeyEnc = packedFile[0:lenWithoutKey], packedFile[lenWithoutKey:]
err := f.decryptSymmetricKey()
if err != nil {
return err
}
a, err := aes.NewCipher(f.symmetricKey)
if err != nil {
return err
}
f.nonce, f.ciphertext = packedFile[0:aes.BlockSize], packedFile[aes.BlockSize:]
cbc := cipher.NewCBCDecrypter(a, f.nonce)
plainText := make([]byte, len(f.ciphertext))
cbc.CryptBlocks(plainText, f.ciphertext)
f.plainText, err = unPad(plainText)
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) OsReadCipherTextFile(path string) error {
packedFile, err := os.ReadFile(path)
if err != nil {
return err
}
err = f.unpackFileAndDecrypt(packedFile)
if err != nil {
return err
}
return nil
}
func pad(buf []byte, size int) []byte {
if size < 1 || size > 255 {
panic(fmt.Sprintf("pkcs7pad: inappropriate block size %d", size))
}
i := size - (len(buf) % size)
return append(buf, bytes.Repeat([]byte{byte(i)}, i)...)
}
func unPad(buf []byte) ([]byte, error) {
if len(buf) == 0 {
return nil, fmt.Errorf("pkcs7pad: bad padding")
}
padLen := buf[len(buf)-1]
toCheck := 255
good := 1
if toCheck > len(buf) {
toCheck = len(buf)
}
for i := 0; i < toCheck; i++ {
b := buf[len(buf)-1-i]
outOfRange := subtle.ConstantTimeLessOrEq(int(padLen), i)
equal := subtle.ConstantTimeByteEq(padLen, b)
good &= subtle.ConstantTimeSelect(outOfRange, 1, equal)
}
good &= subtle.ConstantTimeLessOrEq(1, int(padLen))
good &= subtle.ConstantTimeLessOrEq(int(padLen), len(buf))
if good != 1 {
return nil, fmt.Errorf("pkcs7pad: bad padding")
}
return buf[:len(buf)-int(padLen)], nil
}

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crypt/keys.go Normal file
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package crypt
import (
"bytes"
"crypto/rand"
"crypto/rsa"
"crypto/sha512"
"crypto/x509"
"encoding/pem"
"os"
)
func (f *EncryptedFile) encryptSymmetricKey() error {
hash := sha512.New()
ciphertext, err := rsa.EncryptOAEP(hash, rand.Reader, f.PublicKey, f.symmetricKey, nil)
if err != nil {
return err
}
f.symmetricKeyEnc = ciphertext
return nil
}
func (f *EncryptedFile) decryptSymmetricKey() error {
hash := sha512.New()
plaintext, err := rsa.DecryptOAEP(hash, rand.Reader, f.privateKey, f.symmetricKeyEnc, nil)
if err != nil {
return err
}
f.symmetricKey = plaintext
return nil
}
func (f *EncryptedFile) OsReadPublicKey(path string) error {
pemKey, err := os.ReadFile(path)
if err != nil {
return err
}
f.PublicPem = pemKey
err = f.ParsePublicPem()
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) OsReadPrivateKey(path string) error {
pemKey, err := os.ReadFile(path)
if err != nil {
return err
}
f.privatePem = pemKey
err = f.ParsePrivatePem()
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) GenerateSymmetricKey() error {
symKey := make([]byte, 32)
_, err := rand.Read(symKey)
if err != nil {
return err
}
f.symmetricKey = symKey
err = f.encryptSymmetricKey()
if err != nil {
return err
}
return nil
}
func (f *EncryptedFile) ParsePublicPem() error {
pemKeyBin, _ := pem.Decode(f.PublicPem)
if bytes.Contains(f.PublicPem, []byte("-----BEGIN PUBLIC KEY-----")) {
key, err := x509.ParsePKIXPublicKey(pemKeyBin.Bytes)
if err != nil {
return err
}
f.PublicKey = key.(*rsa.PublicKey)
return nil
}
pubKey, err := x509.ParsePKCS1PublicKey(pemKeyBin.Bytes)
if err != nil {
return err
}
f.PublicKey = pubKey
return nil
}
func (f *EncryptedFile) ParsePrivatePem() error {
pemKeyBin, _ := pem.Decode(f.privatePem)
if bytes.Contains(f.privatePem, []byte("-----BEGIN PRIVATE KEY-----")) {
key, err := x509.ParsePKCS8PrivateKey(pemKeyBin.Bytes)
if err != nil {
return err
}
f.privateKey = key.(*rsa.PrivateKey)
return nil
}
privKey, err := x509.ParsePKCS1PrivateKey(pemKeyBin.Bytes)
if err != nil {
return err
}
f.privateKey = privKey
return nil
}

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go.mod Normal file
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module github.com/siteworxpro/rsa-file-encryption
go 1.22.1
require (
github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
github.com/charmbracelet/bubbles v0.18.0 // indirect
github.com/charmbracelet/bubbletea v0.25.0 // indirect
github.com/charmbracelet/lipgloss v0.10.0 // indirect
github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 // indirect
github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect
github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
github.com/mattn/go-isatty v0.0.18 // indirect
github.com/mattn/go-localereader v0.0.1 // indirect
github.com/mattn/go-runewidth v0.0.15 // indirect
github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b // indirect
github.com/muesli/cancelreader v0.2.2 // indirect
github.com/muesli/reflow v0.3.0 // indirect
github.com/muesli/termenv v0.15.2 // indirect
github.com/rivo/uniseg v0.4.7 // indirect
github.com/russross/blackfriday/v2 v2.1.0 // indirect
github.com/urfave/cli/v2 v2.27.1 // indirect
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
golang.org/x/sync v0.1.0 // indirect
golang.org/x/sys v0.12.0 // indirect
golang.org/x/term v0.6.0 // indirect
golang.org/x/text v0.3.8 // indirect
)

49
go.sum Normal file
View File

@@ -0,0 +1,49 @@
github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
github.com/aymanbagabas/go-osc52/v2 v2.0.1/go.mod h1:uYgXzlJ7ZpABp8OJ+exZzJJhRNQ2ASbcXHWsFqH8hp8=
github.com/charmbracelet/bubbles v0.18.0 h1:PYv1A036luoBGroX6VWjQIE9Syf2Wby2oOl/39KLfy0=
github.com/charmbracelet/bubbles v0.18.0/go.mod h1:08qhZhtIwzgrtBjAcJnij1t1H0ZRjwHyGsy6AL11PSw=
github.com/charmbracelet/bubbletea v0.25.0 h1:bAfwk7jRz7FKFl9RzlIULPkStffg5k6pNt5dywy4TcM=
github.com/charmbracelet/bubbletea v0.25.0/go.mod h1:EN3QDR1T5ZdWmdfDzYcqOCAps45+QIJbLOBxmVNWNNg=
github.com/charmbracelet/lipgloss v0.10.0 h1:KWeXFSexGcfahHX+54URiZGkBFazf70JNMtwg/AFW3s=
github.com/charmbracelet/lipgloss v0.10.0/go.mod h1:Wig9DSfvANsxqkRsqj6x87irdy123SR4dOXlKa91ciE=
github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81 h1:q2hJAaP1k2wIvVRd/hEHD7lacgqrCPS+k8g1MndzfWY=
github.com/containerd/console v1.0.4-0.20230313162750-1ae8d489ac81/go.mod h1:YynlIjWYF8myEu6sdkwKIvGQq+cOckRm6So2avqoYAk=
github.com/cpuguy83/go-md2man/v2 v2.0.2 h1:p1EgwI/C7NhT0JmVkwCD2ZBK8j4aeHQX2pMHHBfMQ6w=
github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
github.com/mattn/go-isatty v0.0.18 h1:DOKFKCQ7FNG2L1rbrmstDN4QVRdS89Nkh85u68Uwp98=
github.com/mattn/go-isatty v0.0.18/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mattn/go-localereader v0.0.1 h1:ygSAOl7ZXTx4RdPYinUpg6W99U8jWvWi9Ye2JC/oIi4=
github.com/mattn/go-localereader v0.0.1/go.mod h1:8fBrzywKY7BI3czFoHkuzRoWE9C+EiG4R1k4Cjx5p88=
github.com/mattn/go-runewidth v0.0.12/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b h1:1XF24mVaiu7u+CFywTdcDo2ie1pzzhwjt6RHqzpMU34=
github.com/muesli/ansi v0.0.0-20211018074035-2e021307bc4b/go.mod h1:fQuZ0gauxyBcmsdE3ZT4NasjaRdxmbCS0jRHsrWu3Ho=
github.com/muesli/cancelreader v0.2.2 h1:3I4Kt4BQjOR54NavqnDogx/MIoWBFa0StPA8ELUXHmA=
github.com/muesli/cancelreader v0.2.2/go.mod h1:3XuTXfFS2VjM+HTLZY9Ak0l6eUKfijIfMUZ4EgX0QYo=
github.com/muesli/reflow v0.3.0 h1:IFsN6K9NfGtjeggFP+68I4chLZV2yIKsXJFNZ+eWh6s=
github.com/muesli/reflow v0.3.0/go.mod h1:pbwTDkVPibjO2kyvBQRBxTWEEGDGq0FlB1BIKtnHY/8=
github.com/muesli/termenv v0.15.2 h1:GohcuySI0QmI3wN8Ok9PtKGkgkFIk7y6Vpb5PvrY+Wo=
github.com/muesli/termenv v0.15.2/go.mod h1:Epx+iuz8sNs7mNKhxzH4fWXGNpZwUaJKRS1noLXviQ8=
github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
github.com/urfave/cli/v2 v2.27.1 h1:8xSQ6szndafKVRmfyeUMxkNUJQMjL1F2zmsZ+qHpfho=
github.com/urfave/cli/v2 v2.27.1/go.mod h1:8qnjx1vcq5s2/wpsqoZFndg2CE5tNFyrTvS6SinrnYQ=
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8=
golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.6.0 h1:clScbb1cHjoCkyRbWwBEUZ5H/tIFu5TAXIqaZD0Gcjw=
golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
golang.org/x/text v0.3.8 h1:nAL+RVCQ9uMn3vJZbV+MRnydTJFPf8qqY42YiA6MrqY=
golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=

111
main.go Normal file
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@@ -0,0 +1,111 @@
package main
import (
"github.com/siteworxpro/rsa-file-encryption/commands"
"github.com/siteworxpro/rsa-file-encryption/printer"
"github.com/urfave/cli/v2"
"os"
)
func main() {
p := printer.NewPrinter()
p.PrintTitle()
app := &cli.App{
Name: "rsa-file-encryption",
Usage: "a file encryption tool using rsa key pairs to encrypt files using AES-256-GCM",
Commands: []*cli.Command{
{
Name: "encrypt",
Aliases: []string{"e", "en"},
Usage: "encrypt a file",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "file",
Aliases: []string{"f"},
Usage: "file to encrypt",
Required: true,
},
&cli.StringFlag{
Name: "public-key",
Aliases: []string{"p"},
Usage: "public key path",
Required: true,
},
&cli.BoolFlag{
Name: "force",
Aliases: []string{"F"},
Usage: "overwrite the encrypted file",
},
},
Action: func(c *cli.Context) error {
return commands.Encrypt(c.String("public-key"), c.String("file"), c.Bool("force"))
},
},
{
Name: "decrypt",
Aliases: []string{"d", "de"},
Usage: "decrypt a file",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "file",
Aliases: []string{"f"},
Usage: "file to decrypt",
Required: true,
},
&cli.StringFlag{
Name: "private-key",
Aliases: []string{"p"},
Usage: "private key path",
Required: true,
},
&cli.StringFlag{
Name: "out",
Aliases: []string{"o"},
Usage: "output file name",
Required: true,
},
&cli.BoolFlag{
Name: "force",
Aliases: []string{"F"},
Usage: "overwrite the encrypted file",
},
},
Action: func(c *cli.Context) error {
return commands.Decrypt(c.String("private-key"), c.String("file"), c.String("out"), c.Bool("force"))
},
},
{
Name: "generate-keypair",
Aliases: []string{"g", "gk"},
Flags: []cli.Flag{
&cli.StringFlag{
Name: "size",
Aliases: []string{"s"},
Usage: "the size of the private key",
DefaultText: "4096",
},
&cli.StringFlag{
Name: "file",
Aliases: []string{"f"},
Usage: "the path to the private key file",
Required: true,
},
&cli.BoolFlag{
Name: "force",
Aliases: []string{"F"},
Usage: "overwrite the private key file",
},
},
Usage: "generate a keypair",
Action: func(c *cli.Context) error {
return commands.GenerateKeypair(c.Uint("size"), c.String("file"), c.Bool("force"))
},
},
},
}
if err := app.Run(os.Args); err != nil {
p.LogError(err.Error())
}
}

91
printer/log.go Normal file
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@@ -0,0 +1,91 @@
package printer
import (
"fmt"
"github.com/charmbracelet/bubbles/spinner"
tea "github.com/charmbracelet/bubbletea"
"github.com/charmbracelet/lipgloss"
"time"
)
func (p *Printer) LogSuccess(message string) {
fmt.Println(p.getSuccess().Render("✅ " + message))
}
func (p *Printer) LogInfo(message string) {
fmt.Println(p.getInfo().Render("ℹ️ " + message))
}
func (p *Printer) LogError(message string) {
fmt.Println(p.getError().Render("❌ " + message))
}
type model struct {
spinner spinner.Model
quitting bool
err error
message string
}
func (*Printer) LogSpinner(message string, done chan bool) {
p := tea.NewProgram(initialModel(message))
go p.Run()
for {
select {
case <-done:
p.Kill()
}
time.Sleep(100 * time.Millisecond)
}
}
func initialModel(message string) model {
s := spinner.New()
s.Spinner = spinner.MiniDot
s.Style = lipgloss.NewStyle().Foreground(lipgloss.Color("205")).PaddingTop(1).PaddingLeft(2)
return model{spinner: s, message: message}
}
func (m model) Init() tea.Cmd {
return m.spinner.Tick
}
type errMsg error
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
switch msg := msg.(type) {
case tea.KeyMsg:
switch msg.String() {
case "ctrl+c":
m.quitting = true
return m, tea.Quit
default:
return m, nil
}
case errMsg:
m.err = msg
return m, nil
default:
var cmd tea.Cmd
m.spinner, cmd = m.spinner.Update(msg)
return m, cmd
}
}
func (m model) View() string {
if m.err != nil {
return m.err.Error()
}
str := fmt.Sprintf(" %s %s\n\n", m.spinner.View(), m.message)
if m.quitting {
return str + "\n"
}
return str
}

19
printer/printer.go Normal file
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@@ -0,0 +1,19 @@
package printer
import (
"fmt"
)
var Version = "0.0.0"
type Printer struct {
}
func NewPrinter() *Printer {
return &Printer{}
}
func (p *Printer) PrintTitle() {
fmt.Println(p.getBright().Render(fmt.Sprintf("RSA File Encryption Tool %s", Version)))
fmt.Println()
}

42
printer/styles.go Normal file
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@@ -0,0 +1,42 @@
package printer
import (
"github.com/charmbracelet/lipgloss"
)
func (*Printer) getBright() lipgloss.Style {
return lipgloss.NewStyle().
Bold(true).
Foreground(lipgloss.Color("#EDEEEDFF")).
Background(lipgloss.Color("#424E46FF")).
MarginTop(1).
PaddingLeft(3).
PaddingRight(3)
}
func (*Printer) getSuccess() lipgloss.Style {
return lipgloss.NewStyle().
Bold(true).
Foreground(lipgloss.Color("#00FF00")).
MarginTop(1).
MarginBottom(2).
PaddingLeft(2).
Width(120)
}
func (*Printer) getError() lipgloss.Style {
return lipgloss.NewStyle().
Bold(true).
Foreground(lipgloss.Color("#FF0000")).
PaddingLeft(2).
MarginTop(1).
MarginBottom(2).
Width(120)
}
func (*Printer) getInfo() lipgloss.Style {
return lipgloss.NewStyle().
Foreground(lipgloss.Color("#4E82B7FF")).
PaddingLeft(2).
Width(120)
}