加密和解密的密码 [英] Encrypt and Decrypt password
本文介绍了加密和解密的密码的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我用下面的code加密和解密asp.net密码。加密完美的作品，但解密时，它抛出这个错误的 无效长度为Base-64字符数组。
我的密码是123，我用它作为跟踪加密： HttpUtility.UrlEn code（CryptorEngine.Encrypt（strpassword，真实））;
并且解密我使用它如下：
CryptorEngine.Decrypt（HttpUtility.UrlDe code（strpassword），真））;
和这里是code：
公共类CryptorEngine
{
///＆LT;总结＆gt;
///使用加密双重加密方法的字符串。返回一个加密的密文
///＆LT; /总结＆gt;
///＆LT; PARAM NAME =toEncrypt＆GT;字符串加密＆LT; /参数＆GT;
///＆LT; PARAM NAME =useHashing＆gt;的哈希？送额外secirity＆LT; /参数＆GT;
///＆LT;＆回报GT;＆LT; /回报＆GT;
公共静态字符串加密（字符串toEncrypt，布尔useHashing）
{
字节[] keyArray;
字节[] = toEncryptArray UTF8Encoding.UTF8.GetBytes（toEncrypt）; System.Configuration.AppSettingsReader settingsReader =新AppSettingsReader（）;
//从配置文件的密钥
字符串键=（字符串）settingsReader.GetValue（SecurityKey，typeof运算（字符串））;
//System.Windows.Forms.MessageBox.Show(key）;
如果（useHashing）
{
MD5CryptoServiceProvider hashmd5 =新MD5CryptoServiceProvider（）;
keyArray = hashmd5.ComputeHash（UTF8Encoding.UTF8.GetBytes（键））;
hashmd5.Clear（）;
}
其他
keyArray = UTF8Encoding.UTF8.GetBytes（键）; TripleDESCryptoServiceProvider TDES =新TripleDESCryptoServiceProvider（）;
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7; ICryptoTransform的cTransform = tdes.CreateEncryptor（）;
字节[] = resultArray cTransform.TransformFinalBlock（toEncryptArray，0，toEncryptArray.Length）;
tdes.Clear（）;
返回Convert.ToBase64String（resultArray，0，resultArray.Length）;
}
///＆LT;总结＆gt;
///解密使用双加密方法的字符串。返回解密明确字符串
///＆LT; /总结＆gt;
///＆LT; PARAM NAME =cipherString＆GT;加密字符串＆LT; /参数＆GT;
///＆LT; PARAM NAME =useHashing＆GT;是否使用了哈希加密此数据？传递true是肯定的＆LT; /参数＆GT;
///＆LT;＆回报GT;＆LT; /回报＆GT;
公共静态字符串解密（字符串cipherString，布尔useHashing）
{
字节[] keyArray;
字节[] = toEncryptArray Convert.FromBase64String（cipherString）; System.Configuration.AppSettingsReader settingsReader =新AppSettingsReader（）;
//从配置文件中的钥匙打开锁！
字符串键=（字符串）settingsReader.GetValue（SecurityKey，typeof运算（字符串））; 如果（useHashing）
{
MD5CryptoServiceProvider hashmd5 =新MD5CryptoServiceProvider（）;
keyArray = hashmd5.ComputeHash（UTF8Encoding.UTF8.GetBytes（键））;
hashmd5.Clear（）;
}
其他
keyArray = UTF8Encoding.UTF8.GetBytes（键）; TripleDESCryptoServiceProvider TDES =新TripleDESCryptoServiceProvider（）;
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7; ICryptoTransform的cTransform = tdes.CreateDecryptor（）;
字节[] = resultArray cTransform.TransformFinalBlock（toEncryptArray，0，toEncryptArray.Length）; tdes.Clear（）;
返回UTF8Encoding.UTF8.GetString（resultArray）;
}
}
解决方案
在URL有字符来与加密输出的冲突，至少在我的code，这是什么使这个问题。所以我用这个两个函数来改变这种字符，避免这种情况。
公共静态字符串ChangeSPChart（字符串sTheInput）
{
StringBuilder的sRetMe =新的StringBuilder（sTheInput）; sRetMe.Replace（+， - ）;
sRetMe.Replace（'/'，'*'）;
sRetMe.Replace（=，！）; 返回sRetMe.ToString（）;
}公共静态字符串FixSPChart（字符串sTheInput）
{
StringBuilder的sRetMe =新的StringBuilder（sTheInput）; sRetMe.Replace（' - '，'+'）;
sRetMe.Replace（'*'，'/'）;
sRetMe.Replace（，=！）; 返回sRetMe.ToString（）;
}
和加密/解密code将是：
公共静态字符串加密（字符串toEncrypt，布尔useHashing）
{
字节[] keyArray;
字节[] = toEncryptArray UTF8Encoding.UTF8.GetBytes（toEncrypt）; System.Configuration.AppSettingsReader settingsReader =新AppSettingsReader（）;
//从配置文件的密钥
字符串键=（字符串）settingsReader.GetValue（SecurityKey，typeof运算（字符串））;
//System.Windows.Forms.MessageBox.Show(key）;
如果（useHashing）
{
MD5CryptoServiceProvider hashmd5 =新MD5CryptoServiceProvider（）;
keyArray = hashmd5.ComputeHash（UTF8Encoding.UTF8.GetBytes（键））;
hashmd5.Clear（）;
}
其他
keyArray = UTF8Encoding.UTF8.GetBytes（键）; TripleDESCryptoServiceProvider TDES =新TripleDESCryptoServiceProvider（）;
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7; ICryptoTransform的cTransform = tdes.CreateEncryptor（）;
字节[] = resultArray cTransform.TransformFinalBlock（toEncryptArray，0，toEncryptArray.Length）; tdes.Clear（）;
变种加密= Convert.ToBase64String（resultArray，0，resultArray.Length）; //这里我改变
返回ChangeSPChart（加密的）;
}
///＆LT;总结＆gt;
///解密使用双加密方法的字符串。返回解密明确字符串
///＆LT; /总结＆gt;
///＆LT; PARAM NAME =cipherString＆GT;加密字符串＆LT; /参数＆GT;
///＆LT; PARAM NAME =useHashing＆GT;是否使用了哈希加密此数据？传递true是肯定的＆LT; /参数＆GT;
///＆LT;＆回报GT;＆LT; /回报＆GT;
公共静态字符串解密（字符串cipherString，布尔useHashing）
{
cipherString = FixSPChart（cipherString）; 字节[] keyArray;
字节[] = toEncryptArray Convert.FromBase64String（cipherString）; System.Configuration.AppSettingsReader settingsReader =新AppSettingsReader（）;
//从配置文件中的钥匙打开锁！
字符串键=（字符串）settingsReader.GetValue（SecurityKey，typeof运算（字符串））; 如果（useHashing）
{
MD5CryptoServiceProvider hashmd5 =新MD5CryptoServiceProvider（）;
keyArray = hashmd5.ComputeHash（UTF8Encoding.UTF8.GetBytes（键））;
hashmd5.Clear（）;
}
其他
keyArray = UTF8Encoding.UTF8.GetBytes（键）; TripleDESCryptoServiceProvider TDES =新TripleDESCryptoServiceProvider（）;
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7; ICryptoTransform的cTransform = tdes.CreateDecryptor（）;
字节[] = resultArray cTransform.TransformFinalBlock（toEncryptArray，0，toEncryptArray.Length）; tdes.Clear（）;
返回UTF8Encoding.UTF8.GetString（resultArray）;
}
I am using the following code to encrypt and decrypt passwords in asp.net. the encryption works perfectly but when decrypting it throws this error Invalid length for a Base-64 char array.
my password is 123 and i am using it as follow to encrypt: HttpUtility.UrlEncode(CryptorEngine.Encrypt(strpassword, true));
and to decrypt I am using it as follow :
CryptorEngine.Decrypt(HttpUtility.UrlDecode(strpassword), true));
and here is the code :
public class CryptorEngine
{
/// <summary>
/// Encrypt a string using dual encryption method. Return a encrypted cipher Text
/// </summary>
/// <param name="toEncrypt">string to be encrypted</param>
/// <param name="useHashing">use hashing? send to for extra secirity</param>
/// <returns></returns>
public static string Encrypt(string toEncrypt, bool useHashing)
{
byte[] keyArray;
byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
// Get the key from config file
string key = (string)settingsReader.GetValue("SecurityKey", typeof(String));
//System.Windows.Forms.MessageBox.Show(key);
if (useHashing)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
hashmd5.Clear();
}
else
keyArray = UTF8Encoding.UTF8.GetBytes(key);
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tdes.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
tdes.Clear();
return Convert.ToBase64String(resultArray, 0, resultArray.Length);
}
/// <summary>
/// DeCrypt a string using dual encryption method. Return a DeCrypted clear string
/// </summary>
/// <param name="cipherString">encrypted string</param>
/// <param name="useHashing">Did you use hashing to encrypt this data? pass true is yes</param>
/// <returns></returns>
public static string Decrypt(string cipherString, bool useHashing)
{
byte[] keyArray;
byte[] toEncryptArray = Convert.FromBase64String(cipherString);
System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
//Get your key from config file to open the lock!
string key = (string)settingsReader.GetValue("SecurityKey", typeof(String));
if (useHashing)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
hashmd5.Clear();
}
else
keyArray = UTF8Encoding.UTF8.GetBytes(key);
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tdes.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
tdes.Clear();
return UTF8Encoding.UTF8.GetString(resultArray);
}
}
解决方案
In the URL there are come characters that conflict with the encrypted output, and at least on my code, this is what make the problem. So I use this two functions to change this characters and avoid that.
public static string ChangeSPChart(string sTheInput)
{
StringBuilder sRetMe = new StringBuilder(sTheInput);
sRetMe.Replace('+', '-');
sRetMe.Replace('/', '*');
sRetMe.Replace('=', '!');
return sRetMe.ToString();
}
public static string FixSPChart(string sTheInput)
{
StringBuilder sRetMe = new StringBuilder(sTheInput);
sRetMe.Replace('-', '+');
sRetMe.Replace('*', '/');
sRetMe.Replace('!', '=');
return sRetMe.ToString();
}
and the encryption/decryption code will be:
public static string Encrypt(string toEncrypt, bool useHashing)
{
byte[] keyArray;
byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes(toEncrypt);
System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
// Get the key from config file
string key = (string)settingsReader.GetValue("SecurityKey", typeof(String));
//System.Windows.Forms.MessageBox.Show(key);
if (useHashing)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
hashmd5.Clear();
}
else
keyArray = UTF8Encoding.UTF8.GetBytes(key);
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tdes.CreateEncryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
tdes.Clear();
var encrypted = Convert.ToBase64String(resultArray, 0, resultArray.Length);
// here I change it
return ChangeSPChart(encrypted);
}
/// <summary>
/// DeCrypt a string using dual encryption method. Return a DeCrypted clear string
/// </summary>
/// <param name="cipherString">encrypted string</param>
/// <param name="useHashing">Did you use hashing to encrypt this data? pass true is yes</param>
/// <returns></returns>
public static string Decrypt(string cipherString, bool useHashing)
{
cipherString = FixSPChart(cipherString);
byte[] keyArray;
byte[] toEncryptArray = Convert.FromBase64String(cipherString);
System.Configuration.AppSettingsReader settingsReader = new AppSettingsReader();
//Get your key from config file to open the lock!
string key = (string)settingsReader.GetValue("SecurityKey", typeof(String));
if (useHashing)
{
MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key));
hashmd5.Clear();
}
else
keyArray = UTF8Encoding.UTF8.GetBytes(key);
TripleDESCryptoServiceProvider tdes = new TripleDESCryptoServiceProvider();
tdes.Key = keyArray;
tdes.Mode = CipherMode.ECB;
tdes.Padding = PaddingMode.PKCS7;
ICryptoTransform cTransform = tdes.CreateDecryptor();
byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
tdes.Clear();
return UTF8Encoding.UTF8.GetString(resultArray);
}
这篇关于加密和解密的密码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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