how to transform encrypt function from golang to nodejs

huangapple
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英文:

how to transform encrypt function from golang to nodejs

问题

我使用golang编写了一个文件加密函数，但我不知道如何使用nodejs实现它。

以下是你要翻译的内容：

我使用golang编写了一个文件加密函数，但我不知道如何使用nodejs实现它。

  1. package main
  3. import (
  4. 	"bytes"
  5. 	"crypto/aes"
  6. 	"crypto/cipher"
  7. 	"crypto/rand"
  8. 	"io"
  9. 	"io/ioutil"
  10. 	"os"
  11. )
  13. func encrypt(aeskey string, filename string) {
  14. 	plaintext, err := ioutil.ReadFile(filename)
  15. 	if err != nil {
  16. 		panic(err.Error())
  17. 	}
  19. 	// 字符串的字节数组
  20. 	key := []byte(aeskey)
  22. 	// 创建AES密码器
  23. 	block, err := aes.NewCipher(key)
  24. 	if err != nil {
  25. 		panic(err)
  26. 	}
  28. 	// IV需要是唯一的，但不需要保密。因此，通常将其包含在密文的开头。
  29. 	ciphertext := make([]byte, aes.BlockSize+len(plaintext))
  30. 	iv := ciphertext[:aes.BlockSize]
  31. 	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
  32. 		panic(err)
  33. 	}
  35. 	stream := cipher.NewCFBEncrypter(block, iv)
  36. 	stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)
  38. 	// 创建一个新文件来保存加密数据。
  39. 	f, err := os.Create(filename + ".aes")
  40. 	if err != nil {
  41. 		panic(err.Error())
  42. 	}
  43. 	_, err = io.Copy(f, bytes.NewReader(ciphertext))
  44. 	if err != nil {
  45. 		panic(err.Error())
  46. 	}
  47. }
  49. func decrypt(aesKey string, inputFile string) {
  51. 	ciphertext, err := ioutil.ReadFile(inputFile)
  52. 	if err != nil {
  53. 		panic(err.Error())
  54. 	}
  56. 	// 密钥
  57. 	key := []byte(aesKey)
  59. 	// 创建AES密码器
  60. 	block, err := aes.NewCipher(key)
  61. 	if err != nil {
  62. 		panic(err)
  63. 	}
  65. 	// 在测试解密之前，
  66. 	// 如果文本太短，则不正确
  67. 	if len(ciphertext) < aes.BlockSize {
  68. 		panic("Text is too short")
  69. 	}
  71. 	// 获取16字节的IV
  72. 	iv := ciphertext[:aes.BlockSize]
  74. 	// 从密文中删除IV
  75. 	ciphertext = ciphertext[aes.BlockSize:]
  77. 	// 返回解密流
  78. 	stream := cipher.NewCFBDecrypter(block, iv)
  79. 	// 从密文中解密字节
  80. 	stream.XORKeyStream(ciphertext, ciphertext)
  81. 	// 创建一个新文件来保存解密数据。
  82. 	f, err := os.Create(inputFile + ".ts")
  83. 	if err != nil {
  84. 		panic(err.Error())
  85. 	}
  86. 	_, err = io.Copy(f, bytes.NewReader(ciphertext))
  87. 	if err != nil {
  88. 		panic(err.Error())
  89. 	}
  90. }
  92. func main() {
  93. 	key := "0123456789123456"
  94. 	encrypt(key, "1.ts")
  95. 	decrypt(key, "1.ts.aes")
  96. }

实际上，我对以下部分有些困惑：

  1. ciphertext := make([]byte, aes.BlockSize+len(plaintext))
  2. iv := ciphertext[:aes.BlockSize]

我使用node编写了一个解密函数，但它不能正常工作：

  1. var fs = require('fs');
  2. var crypto = require('crypto');
  4. function decrypt(aseKey, inputFile){
  5.     var buffer = fs.readFileSync(inputFile)
  6.     var arr = Array.prototype.slice.call(buffer, 0)
  7.     var iv = arr.slice(0, 16)
  8.     var bodyBytes = arr.slice(16)
  9.     var cipher = crypto.createCipheriv('aes-128-cbc', aseKey, new Buffer(iv));
  10.     buffer = cipher.update(new Buffer(bodyBytes));
  11.     fs.writeFile(inputFile + ".node.ts", buffer)
  12. }
  14. decrypt("0123456789123456", "1.ts.aes")

谢谢你的帮助！

英文:

I write a encrypt file function use golang, but I don't how to implement it use nodejs

  1. package main
  2. import (
  3. &quot;bytes&quot;
  4. &quot;crypto/aes&quot;
  5. &quot;crypto/cipher&quot;
  6. &quot;crypto/rand&quot;
  7. &quot;io&quot;
  8. &quot;io/ioutil&quot;
  9. &quot;os&quot;
  10. )
  11. func encrypt(aeskey string, filename string) {
  12. plaintext, err := ioutil.ReadFile(filename)
  13. if err != nil {
  14. panic(err.Error())
  15. }
  16. // Byte array of the string
  17. key := []byte(aeskey)
  18. // Create the AES cipher
  19. block, err := aes.NewCipher(key)
  20. if err != nil {
  21. panic(err)
  22. }
  23. // The IV needs to be unique, but not secure. Therefore it&#39;s common to
  24. // include it at the beginning of the ciphertext.
  25. ciphertext := make([]byte, aes.BlockSize+len(plaintext))
  26. iv := ciphertext[:aes.BlockSize]
  27. if _, err := io.ReadFull(rand.Reader, iv); err != nil {
  28. panic(err)
  29. }
  30. stream := cipher.NewCFBEncrypter(block, iv)
  31. stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)
  32. // create a new file for saving the encrypted data.
  33. f, err := os.Create(filename + &quot;.aes&quot;)
  34. if err != nil {
  35. panic(err.Error())
  36. }
  37. _, err = io.Copy(f, bytes.NewReader(ciphertext))
  38. if err != nil {
  39. panic(err.Error())
  40. }
  41. }
  42. func decrypt(aesKey string, inputFile string) {
  43. ciphertext, err := ioutil.ReadFile(inputFile)
  44. if err != nil {
  45. panic(err.Error())
  46. }
  47. // Key
  48. key := []byte(aesKey)
  49. // Create the AES cipher
  50. block, err := aes.NewCipher(key)
  51. if err != nil {
  52. panic(err)
  53. }
  54. // Before even testing the decryption,
  55. // if the text is too small, then it is incorrect
  56. if len(ciphertext) &lt; aes.BlockSize {
  57. panic(&quot;Text is too short&quot;)
  58. }
  59. // Get the 16 byte IV
  60. iv := ciphertext[:aes.BlockSize]
  61. // Remove the IV from the ciphertext
  62. ciphertext = ciphertext[aes.BlockSize:]
  63. // Return a decrypted stream
  64. stream := cipher.NewCFBDecrypter(block, iv)
  65. // Decrypt bytes from ciphertext
  66. stream.XORKeyStream(ciphertext, ciphertext)
  67. // create a new file for saving the encrypted data.
  68. f, err := os.Create(inputFile + &quot;.ts&quot;)
  69. if err != nil {
  70. panic(err.Error())
  71. }
  72. _, err = io.Copy(f, bytes.NewReader(ciphertext))
  73. if err != nil {
  74. panic(err.Error())
  75. }
  76. }
  77. func main() {
  78. key := &quot;0123456789123456&quot;
  79. encrypt(key, &quot;1.ts&quot;)
  80. decrypt(key, &quot;1.ts.aes&quot;)
  81. }

In fact, I just have some confuse about

  1.  ciphertext := make([]byte, aes.BlockSize+len(plaintext))
  2. iv := ciphertext[:aes.BlockSize]

I write a decrypt function use node ,but it don't work well:

  1. var fs = require(&#39;fs&#39;);
  2. var crypto = require(&#39;crypto&#39;);
  3. function decrypt(aseKey, inputFile){
  4. var buffer = fs.readFileSync(inputFile)
  5. var arr = Array.prototype.slice.call(buffer, 0)
  6. var iv = arr.slice(0, 16)
  7. var bodyBytes = arr.slice(16)
  8. var cipher = crypto.createCipheriv(&#39;aes-128-cbc&#39;, aseKey, new Buffer(iv));
  9. buffer = cipher.update(new Buffer(bodyBytes));
  10. fs.writeFile(inputFile + &quot;.node.ts&quot;, buffer)
  11. }
  12. decrypt(&quot;0123456789123456&quot;, &quot;1.ts.aes&quot;)

thanks for you help

答案1

得分: 1

var fs = require('fs');
var crypto = require('crypto');

function decrypt(aseKey, inputFile){
var fileBody = fs.readFileSync(inputFile)
var decipher = crypto.createDecipheriv("aes-128-cfb",new Buffer(aseKey) , fileBody.slice(0,16))
var recv = decipher.update(fileBody.slice(16))

  1. fs.writeFileSync(inputFile + ".n.ts", recv)

}

英文: 
  1. var fs = require(&#39;fs&#39;);
  2. var crypto = require(&#39;crypto&#39;);
  3. function decrypt(aseKey, inputFile){
  4. var fileBody = fs.readFileSync(inputFile)
  5. var  decipher =  crypto.createDecipheriv(&quot;aes-128-cfb&quot;,new Buffer(aseKey) , fileBody.slice(0,16))
  6. var recv = decipher.update(fileBody.slice(16))
  7. fs.writeFileSync(inputFile + &quot;.n.ts&quot;, recv)
  8. }

huangapple
  • 本文由 发表于 2017年5月27日 17:08:32
  • 转载请务必保留本文链接：https://go.coder-hub.com/44215014.html
  • encryption
  • go
  • node.js
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