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구성 파일을 쓰고 읽는 프로그램이 있습니다. 필자는 vb.net에서 RijndaelManaged 개체를 사용하여 전체 파일을 암호화하고 키와 초기화 벡터에 동일한 값을 사용하여 암호를 해독 할 때 읽습니다.vb.net의 암호화/암호 해독이 항상 같은 값을 반환하지는 않습니다.
내 개발 컴퓨터와 다른 많은 컴퓨터에서 모두 잘 작동합니다. 그러나 일부 PC는 동일한 프로그램을 사용하여 파일을 암호화/해독 할 수 없습니다.
이 암호화 개체에는 차단을 방지하기 위해 무엇이 필요하며 대신 사용 하시겠습니까?
감사
편집 : 여기에 내가 암호화하고 해독하는 데 사용하는 코드입니다 : 내 메인 컴퓨터에서 바이트를 암호화하는 경우, 내가 볼 수에서 무슨 일이, 내가 어떤 PC에서 그것을 decypt 수 있습니다. 그러나 다른 PC에서 바이트를 암호화하면 모든 PC에서 해독 할 수 없습니다. 또한, 파일의 내용을 살펴보면 전혀 같지 않게 보입니다. 내가 돌아 다니는 일반적인 방법은 파일 (보통 XML)에서 memorystream을 생성하고 암호화/해독하는 것입니다.
Public Shared Function EncryptBytes(ByVal strContenu() As Byte, ByVal initVectorBytes() As Byte, ByVal saltValueBytes() As Byte) As Byte()
' Convert our plaintext into a byte array.
' Let us assume that plaintext contains UTF8-encoded characters.
Dim plainTextBytes As Byte() = strContenu
'plainTextBytes = System.Text.Encoding.Unicode.GetBytes(strMessage)
Dim strPassPhrase As String = "d%6&?76dhd8?532LDhds8!7?&?8&?dhcv77"
Dim strHashAlgorithm As String = "SHA1"
Dim intPswdIterations As Integer = 2
' First, we must create a password, from which the key will be derived.
' This password will be generated from the specified passphrase and
' salt value. The password will be created using the specified hash
' algorithm. Password creation can be done in several iterations.
Dim password As PasswordDeriveBytes
password = New PasswordDeriveBytes(strPassPhrase, _
saltValueBytes, _
strHashAlgorithm, _
intPswdIterations)
' Use the password to generate pseudo-random bytes for the encryption
' key. Specify the size of the key in bytes (instead of bits).
Dim keyBytes As Byte()
keyBytes = password.GetBytes(32)
' Create uninitialized Rijndael encryption object.
Dim symmetricKey As RijndaelManaged
symmetricKey = New RijndaelManaged()
' It is reasonable to set encryption mode to Cipher Block Chaining
' (CBC). Use default options for other symmetric key parameters.
symmetricKey.Mode = CipherMode.CBC
' Generate encryptor from the existing key bytes and initialization
' vector. Key size will be defined based on the number of the key
' bytes.
Dim encryptor As ICryptoTransform
encryptor = symmetricKey.CreateEncryptor(keyBytes, initVectorBytes)
' Define memory stream which will be used to hold encrypted data.
Dim memoryStream As System.IO.MemoryStream
memoryStream = New System.IO.MemoryStream()
' Define cryptographic stream (always use Write mode for encryption).
Dim cryptoStream As CryptoStream
cryptoStream = New CryptoStream(memoryStream, _
encryptor, _
CryptoStreamMode.Write)
' Start encrypting.
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length)
' Finish encrypting.
cryptoStream.FlushFinalBlock()
' Convert our encrypted data from a memory stream into a byte array.
Dim cipherTextBytes As Byte()
cipherTextBytes = memoryStream.ToArray()
' Close both streams.
memoryStream.Close()
cryptoStream.Close()
' Convert encrypted data into a base64-encoded string.
'Dim cipherText As String
'cipherText =
Return cipherTextBytes
' Return encrypted string.
'Return cipherText
End Function
Public Shared Function DecryptBytes(ByVal strContenuEncrypte() As Byte, ByVal initVectorBytes() As Byte, ByVal saltValueBytes() As Byte) As Byte()
' Convert strings defining encryption key characteristics into byte
' arrays. Let us assume that strings only contain ASCII codes.
' If strings include Unicode characters, use Unicode, UTF7, or UTF8
' encoding.
' Convert our ciphertext into a byte array.
Dim cipherTextBytes As Byte() = strContenuEncrypte
Dim strPassPhrase As String = "d%6&?76dhd8DSDhds8!7?&?8&?dhcv77"
Dim strHashAlgorithm As String = "SHA1"
Dim intPswdIterations As Integer = 2
' First, we must create a password, from which the key will be
' derived. This password will be generated from the specified
' passphrase and salt value. The password will be created using
' the specified hash algorithm. Password creation can be done in
' several iterations.
Dim password As PasswordDeriveBytes
password = New PasswordDeriveBytes(strPassPhrase, _
saltValueBytes, _
strHashAlgorithm, _
intPswdIterations)
' Use the password to generate pseudo-random bytes for the encryption
' key. Specify the size of the key in bytes (instead of bits).
Dim keyBytes As Byte()
keyBytes = password.GetBytes(32)
' Create uninitialized Rijndael encryption object.
Dim symmetricKey As RijndaelManaged
symmetricKey = New RijndaelManaged()
' It is reasonable to set encryption mode to Cipher Block Chaining
' (CBC). Use default options for other symmetric key parameters.
symmetricKey.Mode = CipherMode.CBC
' Generate decryptor from the existing key bytes and initialization
' vector. Key size will be defined based on the number of the key
' bytes.
Dim decryptor As ICryptoTransform
decryptor = symmetricKey.CreateDecryptor(keyBytes, initVectorBytes)
' Define memory stream which will be used to hold encrypted data.
Dim memoryStream As System.IO.MemoryStream
memoryStream = New System.IO.MemoryStream(cipherTextBytes)
' Define memory stream which will be used to hold encrypted data.
Dim cryptoStream As CryptoStream
cryptoStream = New CryptoStream(memoryStream, _
decryptor, _
CryptoStreamMode.Read)
' Since at this point we don't know what the size of decrypted data
' will be, allocate the buffer long enough to hold ciphertext;
' plaintext is never longer than ciphertext.
Dim plainTextBytes As Byte()
ReDim plainTextBytes(cipherTextBytes.Length)
' Start decrypting.
Dim decryptedByteCount As Integer
decryptedByteCount = cryptoStream.Read(plainTextBytes, _
0, _
plainTextBytes.Length)
' Close both streams.
memoryStream.Close()
cryptoStream.Close()
' Convert decrypted data into a string.
' Let us assume that the original plaintext string was UTF8-encoded.
Dim plainText As String
plainText = System.Text.Encoding.Unicode.GetString(plainTextBytes, _
0, _
decryptedByteCount)
' Return decrypted string.
Return plainTextBytes
End Function
암호화 알고리즘 코드를 게시 할 수 있습니까? – nerdybeardo