(我曾尝试在密码学堆栈交换上提问,但他们认为那里不合适。)
我正在尝试使用标准.NET库在C#中复制一个用Delphi编写的算法。据说这个Delphi算法通过了标准参考测试。它应该是AES/CBC;但是,我一直无法使用System.Security.Cryptography.AesManaged来复制结果。
以下是使用简单输入调用它的示例:
function StringToHex(S: string): string;
var
i: integer;
begin
Result := '';
for i := 1 to Length(S) do
Result := Result + IntToHex(Ord(S[i]), 2);
end;
var
PlainText: AnsiString;
AES: TAES;
Key: TAESKey256; // array[0..31] of byte;
InitialVector: TAESBuffer; // array[0..15] of byte;
InputStream: TStringStream;
OutputStream: TStringStream;
begin
PlainText := 'test';
FillChar(Key, SizeOf(Key), 1);
FillChar(InitialVector, SizeOf(InitialVector), 2);
AES := TAES.Create;
InputStream := TStringStream.Create(PlainText);
OutputStream := TStringStream.Create('');
try
AES.EncryptAESStreamCBC(InputStream, 0, Key, InitialVector, OutputStream);
Writeln(StringToHex(OutputStream.DataString));
Readln;
finally
InputStream.Free;
OutputStream.Free;
AES.Free;
end;
end.
输出:
CEE3684F05D02E5A0930CED21F76075A
这段代码似乎基于Delphi Spring Framework。
我该如何在.NET中复制它?
我已经尝试过的方法(甚至转换为字节以避免任何Unicode问题):
public byte[] Encrypt()
{
using (var algorithm = new AesManaged())
{
// Default is CBC
algorithm.Key = Enumerable.Repeat((byte)0x01, 32).ToArray();
algorithm.IV = Enumerable.Repeat((byte)0x02, 16).ToArray();
using (ICryptoTransform encryptor = algorithm.CreateEncryptor(algorithm.Key, algorithm.IV))
{
using (var stream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(stream, encryptor, CryptoStreamMode.Write))
{
using (var writer = new BinaryWriter(cryptoStream))
{
writer.Write(new byte[] {0x74, 0x65, 0x73, 0x74});
}
return stream.ToArray();
}
}
}
}
}
这会导致不同的输出结果,但是(第一个字节是x6D)。