英文:
Vb.net to golang AES
问题
我正在尝试将一个VB函数加密程序转换为Golang。
我的Go函数返回我传入的任何值的十六进制长度，但是VB程序始终返回长度为32。
请问有人可以告诉我我做错了什么吗？
VB代码：
Function encryptString(ByVal source As String, ByVal key As Byte(), ByVal IV As Byte()) As Byte()
Dim array As Byte() = Nothing
Using aesManaged As System.Security.Cryptography.AesManaged = New System.Security.Cryptography.AesManaged()
aesManaged.Key = key
aesManaged.IV = IV
Dim cryptoTransform As ICryptoTransform = aesManaged.CreateEncryptor(aesManaged.Key, aesManaged.IV)
Using memoryStream As System.IO.MemoryStream = New System.IO.MemoryStream()
Using cryptoStream As System.Security.Cryptography.CryptoStream = New System.Security.Cryptography.CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write)
Using streamWriter As System.IO.StreamWriter = New System.IO.StreamWriter(cryptoStream)
streamWriter.Write(source)
End Using
array = memoryStream.ToArray()
End Using
End Using
End Using
End Function
Go代码：
func Encrypt(key string, plaintext string) string {
block, err := aes.NewCipher([]byte(key))
if err != nil {
panic(err)
}
str := []byte(plaintext)
iv := []byte{178, 212, 4, 97, 181, 77, 129, 200, 198, 223, 84, 96, 81, 55, 3, 40}
encrypter := cipher.NewCFBEncrypter(block, iv)
encrypted := make([]byte, len(str))
encrypter.XORKeyStream(encrypted, str)
fmt.Printf("'%s' encrypted to %x\n", str, encrypted)
}
另外，IV和密钥两次都是相同的，但结果却不同...
英文:
I am trying to convert a function encryption routine from VB to Golang.
My Go route returns the hex length of my what ever value I pass into it but the VB routine always returns a length of 32.
Could some please advice me on what I am doing wrong?
VB:
Function encryptString(ByVal source As String, ByVal key As Byte(), ByVal IV As Byte()) As Byte()
Dim array As Byte() = Nothing
Using aesManaged As System.Security.Cryptography.AesManaged = New System.Security.Cryptography.AesManaged()
aesManaged.Key = key
aesManaged.IV = IV
Dim cryptoTransform As ICryptoTransform = aesManaged.CreateEncryptor(aesManaged.Key, aesManaged.IV)
Using memoryStream As System.IO.MemoryStream = New System.IO.MemoryStream()
Using cryptoStream As System.Security.Cryptography.CryptoStream = New System.Security.Cryptography.CryptoStream(memoryStream, cryptoTransform, CryptoStreamMode.Write)
Using streamWriter As System.IO.StreamWriter = New System.IO.StreamWriter(cryptoStream)
streamWriter.Write(source)
End Using
array = memoryStream.ToArray()
End Using
End Using
End Using
Go
func Encrypt(key string, plaintext string) string {
block, err := aes.NewCipher([]byte(key))
if err != nil {
panic(err)
}
str := []byte(plaintext)
iv := []byte{178, 212, 4, 97, 181, 77, 129, 200, 198, 223, 84, 96, 81, 55, 3, 40}
encrypter := cipher.NewCFBEncrypter(block, iv)
encrypted := make([]byte, len(str))
encrypter.XORKeyStream(encrypted, str)
fmt.Printf("%s encrypted to %x\n", str, encrypted)
}
Also both times the IV and the key have been the same but I get different results...
答案1
得分: 1
默认的.Net操作模式可能是CBC（你应该显式设置），但你的Go代码使用的是CFB模式。它们不兼容。
CBC模式需要填充方案，但CFB模式不需要。.Net默认使用PKCS#7填充，但Go不提供任何帮助来添加或删除填充。你需要自己实现它。这个问题包含了PKCS#7填充的实现。
英文:
The default mode of operation in .Net is probably CBC (you should set it explicitly), but your Go code uses CFB mode. They are not compatible.
CBC mode requires a padding scheme, but CFB not. .Net uses PKCS#7 padding by default, but Go doesn't provide you with any help to add or remove padding. You would need to implement it yourself. This question contains an implementation of PKCS#7 padding.
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