How to use #39;System.Security.Cryptography.AesManaged#39; to encrypt a byte[]?(如何使用“System.Security.Cryptography.AesManaged加密一个字节[]?)
问题描述
基本上我想使用 System.Security.Cryptography.AesManaged (或者更好的类,如果你认为有的话?)获取一个字节数组并使用给定的对称密钥创建另一个加密字节数组(我假设我需要一个吗?).
Basically i want to use System.Security.Cryptography.AesManaged (or a better class, if you think there is one?) to take one byte array and create another encrypted byte array, using a given symmetric key (i assume i'll need one?).
我还需要逆向这个过程的方法.
I also will need the way to reverse this procedure.
这样做的目的是让我可以加密存储的密码.我认为有一种简单的方法可以做到这一点?
The point of this is so i can encrypt stored passwords. I assume there's a simple way to do this?
谢谢
推荐答案
你真的应该在每次加密时生成一个随机 IV,不像我下面的古老代码:
You really should generate a random IV each time you encrypt, unlike my ancient code below:
这是我最后所做的,灵感来自(旧版)迈克尔的回答:
Here's what i did in the end, inspired by (an older version of) michael's answer:
private string Encrypt(string input)
{
return Convert.ToBase64String(Encrypt(Encoding.UTF8.GetBytes(input)));
}
private byte[] Encrypt(byte[] input)
{
PasswordDeriveBytes pdb = new PasswordDeriveBytes("hjiweykaksd", new byte[] { 0x43, 0x87, 0x23, 0x72, 0x45, 0x56, 0x68, 0x14, 0x62, 0x84 });
MemoryStream ms = new MemoryStream();
Aes aes = new AesManaged();
aes.Key = pdb.GetBytes(aes.KeySize / 8);
aes.IV = pdb.GetBytes(aes.BlockSize / 8);
CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(input, 0, input.Length);
cs.Close();
return ms.ToArray();
}
private string Decrypt(string input)
{
return Encoding.UTF8.GetString(Decrypt(Convert.FromBase64String(input)));
}
private byte[] Decrypt(byte[] input)
{
PasswordDeriveBytes pdb = new PasswordDeriveBytes("hjiweykaksd", new byte[] { 0x43, 0x87, 0x23, 0x72, 0x45, 0x56, 0x68, 0x14, 0x62, 0x84 });
MemoryStream ms = new MemoryStream();
Aes aes = new AesManaged();
aes.Key = pdb.GetBytes(aes.KeySize / 8);
aes.IV = pdb.GetBytes(aes.BlockSize / 8);
CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Write);
cs.Write(input, 0, input.Length);
cs.Close();
return ms.ToArray();
}
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本文标题为:如何使用“System.Security.Cryptography.AesManaged"加


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