127 lines
3.7 KiB
Go
127 lines
3.7 KiB
Go
package rsa
|
||
|
||
import (
|
||
"fmt"
|
||
"io"
|
||
"os"
|
||
|
||
"archgrid.xyz/ag/tools/types"
|
||
"archgrid.xyz/ag/toolsbox/encryption/rsa"
|
||
"archgrid.xyz/ag/toolsbox/serialize/base64"
|
||
"archgrid.xyz/ag/toolsbox/serialize/hex"
|
||
"github.com/spf13/cobra"
|
||
)
|
||
|
||
var (
|
||
rsaDecryptionFromFile bool
|
||
rsaDecryptionToFile bool
|
||
rsaDecryptionFromEncoding types.ResultEncoding = types.ResultInHex
|
||
rsaDecryptionInputFile string
|
||
rsaDecryptionOutputFile string
|
||
)
|
||
|
||
var rsaDecryptionCmd = &cobra.Command{
|
||
Use: "decrypt",
|
||
Short: `使用RSA算法对给定的内容进行解密`,
|
||
Long: `使用RSA算法对给定的内容进行解密，生成RSA密钥。如果指定了输入文件，则从输入文件中读取内容进行解密，否则从命令行读取内容进行解密。如果指定了输出文件，则将解密后的内容写入到输出文件中，否则将解密后的内容输出到命令行。`,
|
||
Args: cobra.MaximumNArgs(1),
|
||
Run: rsaDecryptionExecute,
|
||
}
|
||
|
||
func rsaDecryptionExecute(cmd *cobra.Command, args []string) {
|
||
var (
|
||
content []byte
|
||
cert []byte
|
||
keys *rsa.KeyPair
|
||
err error
|
||
)
|
||
if len(privateKeyFile) > 0 {
|
||
file, err := os.Open(privateKeyFile)
|
||
if err != nil {
|
||
fmt.Printf("无法打开RSA私钥文件：%s\n", err)
|
||
return
|
||
}
|
||
cert, err = io.ReadAll(file)
|
||
if err != nil {
|
||
fmt.Printf("无法读取RSA私钥文件：%s\n", err)
|
||
return
|
||
}
|
||
} else {
|
||
fmt.Println("必须提供RSA私钥文件才能够解密。")
|
||
return
|
||
}
|
||
keys, err = rsa.NewFromPEM(cert)
|
||
if err != nil {
|
||
fmt.Printf("无法解析RSA私钥：%s\n", err)
|
||
return
|
||
}
|
||
if rsaDecryptionFromFile {
|
||
if len(rsaDecryptionInputFile) == 0 {
|
||
fmt.Println("必须指定输入文件名。")
|
||
return
|
||
}
|
||
file, err := os.Open(rsaDecryptionInputFile)
|
||
if err != nil {
|
||
fmt.Printf("无法打开输入文件：%s\n", err)
|
||
return
|
||
}
|
||
content, err = io.ReadAll(file)
|
||
if err != nil {
|
||
fmt.Printf("无法读取输入文件：%s\n", err)
|
||
return
|
||
}
|
||
} else {
|
||
if len(args) == 0 {
|
||
fmt.Println("必须指定待解密的内容。")
|
||
return
|
||
}
|
||
switch rsaDecryptionFromEncoding {
|
||
case types.ResultInHex:
|
||
content, err = hex.FromHex(args[0])
|
||
if err != nil {
|
||
fmt.Printf("无法解析十六进制编码：%s\n", err)
|
||
return
|
||
}
|
||
case types.ResultInBase64:
|
||
content, err = base64.FromBase64(args[0])
|
||
if err != nil {
|
||
fmt.Printf("无法解析Base64编码：%s\n", err)
|
||
return
|
||
}
|
||
}
|
||
}
|
||
decrypted, err := keys.Decrypt(content)
|
||
if err != nil {
|
||
fmt.Printf("无法解密：%s\n", err)
|
||
return
|
||
}
|
||
if rsaDecryptionToFile {
|
||
if len(rsaDecryptionOutputFile) == 0 {
|
||
fmt.Println("必须指定输出文件名。")
|
||
return
|
||
}
|
||
file, err := os.OpenFile(rsaDecryptionOutputFile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
|
||
if err != nil {
|
||
fmt.Printf("无法打开输出文件：%s\n", err)
|
||
return
|
||
}
|
||
defer file.Close()
|
||
_, err = file.Write(decrypted)
|
||
if err != nil {
|
||
fmt.Printf("无法写入输出文件：%s\n", err)
|
||
return
|
||
}
|
||
} else {
|
||
fmt.Printf("解密结果：%s\n", decrypted)
|
||
}
|
||
}
|
||
|
||
func init() {
|
||
rsaDecryptionCmd.Flags().BoolVarP(&rsaDecryptionFromFile, "from-file", "f", false, "从文件中读取待解密的内容")
|
||
rsaDecryptionCmd.Flags().BoolVarP(&rsaDecryptionToFile, "to-file", "t", false, "将解密后的内容写入到文件中")
|
||
rsaDecryptionCmd.Flags().VarP(&rsaDecryptionFromEncoding, "from-encoding", "e", "指定输出格式，可选值为hex、base64，默认值为hex。对文件输入格式不起作用。")
|
||
rsaDecryptionCmd.Flags().StringVarP(&rsaDecryptionInputFile, "input-file", "i", "", "指定输入文件名")
|
||
rsaDecryptionCmd.Flags().StringVarP(&rsaDecryptionOutputFile, "output-file", "o", "", "指定输出文件名")
|
||
rsaCmd.AddCommand(rsaDecryptionCmd)
|
||
}
|