Question

求一段C#简单的字符串加密与解密代码

简单容懂的加分

Answer 1

using System.Security.Cryptography;
using System.Text;

string get6(string 要加密的文字或者要解密的文字outXMLFilePath, string jia)
{
byte[] Keys ={ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
if (jia.Equals("加密"))
{
byte[] rgbKey ={ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
byte[] inputByteArray = Encoding.UTF8.GetBytes(outXMLFilePath);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
else
{
byte[] rgbKey ={ 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
byte[] rgbIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
byte[] inputByteArray = Convert.FromBase64String(outXMLFilePath);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());

}
}

Answer 2

public static string Encrypt(string data, string encryptKey)
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(encryptKey);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(encryptKey);
DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
int i = cryptoProvider.KeySize;
MemoryStream ms = new MemoryStream();
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
StreamWriter sw = new StreamWriter(cst);
sw.Write(data);
sw.Flush();
cst.FlushFinalBlock();
sw.Flush();
return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
}
public static string Decrypt(string data, string encryptKey)
{
byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(encryptKey);
byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(encryptKey); byte[] byEnc;
try
{
byEnc = Convert.FromBase64String(data);
}
catch
{
return data;
} DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(byEnc);
CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
StreamReader sr = new StreamReader(cst);
return sr.ReadToEnd();
}

Answer 3

加密：
byte[] bytes=Encoding.Default.GetBytes("要转换的字符串");
Convert.ToBase64String(bytes);
解密：、
byte[] outputb = Convert.FromBase64String("ztKwrsTj");
string orgStr= Encoding.Default.GetString(outputb);