有关C#中RSA加密方法的密钥生成长度 50
根据要求,必须使用1024bits的密钥;参考MSDN中的描述,安装了"MicroSoftEnhancedCryptographicProvider"才能支持384bis...
根据要求,必须使用1024bits的密钥;参考MSDN中的描述,安装了"MicroSoft Enhanced Cryptographic Provider"才能支持384bis~16384bits密钥, 否则Base默认最多支持512bits。
提问:
①"MicroSoft Enhanced Cryptographic Provider"是什么东西?是Lib吗?
②我怎么确认我的PC上有无安装
③假设使用工具为VS2010,在C#中加密需要"MicroSoft Enhanced Cryptographic Provider"吗?
④如果"MicroSoft Enhanced Cryptographic Provider"确认需要安装,而我的Pc没有安装,那么可以去哪里下载(最好能给个地址,去微软的网站找过了,没找到,谢谢~)
工作需要,急~~~请各位大大帮忙啊!
Tips:不要粘老长老长一段代码的,我这里代码已经写好,就是不清楚"MicroSoft Enhanced Cryptographic Provider"对需要生成的密钥有什么影响,所以。。。。谢谢了 展开
提问:
①"MicroSoft Enhanced Cryptographic Provider"是什么东西?是Lib吗?
②我怎么确认我的PC上有无安装
③假设使用工具为VS2010,在C#中加密需要"MicroSoft Enhanced Cryptographic Provider"吗?
④如果"MicroSoft Enhanced Cryptographic Provider"确认需要安装,而我的Pc没有安装,那么可以去哪里下载(最好能给个地址,去微软的网站找过了,没找到,谢谢~)
工作需要,急~~~请各位大大帮忙啊!
Tips:不要粘老长老长一段代码的,我这里代码已经写好,就是不清楚"MicroSoft Enhanced Cryptographic Provider"对需要生成的密钥有什么影响,所以。。。。谢谢了 展开
1个回答
展开全部
/// <summary> /// 字符串加密操作类
/// </summary>
public class EncryptionOperation
{
/// <summary>
/// MD5 加密静态方法
/// </summary>
/// <param name="EncryptString">待加密的密文</param>
/// <returns>returns</returns>
public static string MD5Encrypt(string EncryptString) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
MD5 m_ClassMD5 = new MD5CryptoServiceProvider();
string m_strEncrypt = "";
try {
m_strEncrypt = BitConverter.ToString(m_ClassMD5.ComputeHash(Encoding.Default.GetBytes(EncryptString))).Replace("-", "");
}
catch (ArgumentException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_ClassMD5.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// DES 加密(数据加密标准,速度较快,适用于加密大量数据的场合)
/// </summary>
/// <param name="EncryptString">待加密的密文</param>
/// <param name="EncryptKey">加密的密钥</param>
/// <returns>returns</returns>
public static string DESEncrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
if (EncryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strEncrypt = "";
DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);
m_cstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_DESProvider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// DES 解密(数据加密标准,速度较快,适用于加密大量数据的场合)
/// </summary>
/// <param name="DecryptString">待解密的密文</param>
/// <param name="DecryptKey">解密的密钥</param>
/// <returns>returns</returns>
public static string DESDecrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
if (DecryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strDecrypt = "";
DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);
m_cstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) {
m_strDecrypt = "";
}
catch (CryptographicException ex) { m_strDecrypt = ""; }
catch (ArgumentException ex) { m_strDecrypt = ""; }
catch (Exception ex) { m_strDecrypt = ""; }
finally { m_DESProvider.Clear(); }
return m_strDecrypt;
}
/// <summary>
/// RC2 加密(用变长密钥对大量数据进行加密)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey">加密密钥</param>
/// <returns>returns</returns>
public static string RC2Encrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
if (EncryptKey.Length < 5 || EncryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }
string m_strEncrypt = "";
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);
m_cstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_RC2Provider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// RC2 解密(用变长密钥对大量数据进行加密)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey">解密密钥</param>
/// <returns>returns</returns>
public static string RC2Decrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
if (DecryptKey.Length < 5 || DecryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strDecrypt = "";
RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);
m_cstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_RC2Provider.Clear(); }
return m_strDecrypt;
}
/// <summary>
/// 3DES 加密(基于DES,对一块数据用三个不同的密钥进行三次加密,强度更高)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey1">密钥一</param>
/// <param name="EncryptKey2">密钥二</param>
/// <param name="EncryptKey3">密钥三</param>
/// <returns>returns</returns>
public static string DES3Encrypt(string EncryptString, string EncryptKey1, string EncryptKey2, string EncryptKey3) {
string m_strEncrypt = "";
try {
m_strEncrypt = DESEncrypt(EncryptString, EncryptKey3);
m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey2);
m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey1);
}
catch (Exception ex) { throw ex; }
return m_strEncrypt;
}
/// <summary>
/// 3DES 解密(基于DES,对一块数据用三个不同的密钥进行三次加密,强度更高)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey1">密钥一</param>
/// <param name="DecryptKey2">密钥二</param>
/// <param name="DecryptKey3">密钥三</param>
/// <returns>returns</returns>
public static string DES3Decrypt(string DecryptString, string DecryptKey1, string DecryptKey2, string DecryptKey3) {
string m_strDecrypt = "";
try {
m_strDecrypt = DESDecrypt(DecryptString, DecryptKey1);
m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey2);
m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey3);
}
catch (Exception ex) { throw ex; }
return m_strDecrypt;
}
/// <summary>
/// AES 加密(高级加密标准,是下一代的加密算法标准,速度快,安全级别高,目前 AES 标准的一个实现是 Rijndael 算法)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey">加密密钥</param>
/// <returns></returns>
public static string AESEncrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
string m_strEncrypt = "";
byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael m_AESProvider = Rijndael.Create();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_csstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_csstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_csstream.Close(); m_csstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_AESProvider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// AES 解密(高级加密标准,是下一代的加密算法标准,速度快,安全级别高,目前 AES 标准的一个实现是 Rijndael 算法)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey">解密密钥</param>
/// <returns></returns>
public static string AESDecrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
string m_strDecrypt = "";
byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael m_AESProvider = Rijndael.Create();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_csstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_csstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_csstream.Close(); m_csstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_AESProvider.Clear(); }
return m_strDecrypt;
} }
/// </summary>
public class EncryptionOperation
{
/// <summary>
/// MD5 加密静态方法
/// </summary>
/// <param name="EncryptString">待加密的密文</param>
/// <returns>returns</returns>
public static string MD5Encrypt(string EncryptString) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
MD5 m_ClassMD5 = new MD5CryptoServiceProvider();
string m_strEncrypt = "";
try {
m_strEncrypt = BitConverter.ToString(m_ClassMD5.ComputeHash(Encoding.Default.GetBytes(EncryptString))).Replace("-", "");
}
catch (ArgumentException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_ClassMD5.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// DES 加密(数据加密标准,速度较快,适用于加密大量数据的场合)
/// </summary>
/// <param name="EncryptString">待加密的密文</param>
/// <param name="EncryptKey">加密的密钥</param>
/// <returns>returns</returns>
public static string DESEncrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
if (EncryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strEncrypt = "";
DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);
m_cstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_DESProvider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// DES 解密(数据加密标准,速度较快,适用于加密大量数据的场合)
/// </summary>
/// <param name="DecryptString">待解密的密文</param>
/// <param name="DecryptKey">解密的密钥</param>
/// <returns>returns</returns>
public static string DESDecrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
if (DecryptKey.Length != 8) { throw (new Exception("密钥必须为8位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strDecrypt = "";
DESCryptoServiceProvider m_DESProvider = new DESCryptoServiceProvider();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_DESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);
m_cstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) {
m_strDecrypt = "";
}
catch (CryptographicException ex) { m_strDecrypt = ""; }
catch (ArgumentException ex) { m_strDecrypt = ""; }
catch (Exception ex) { m_strDecrypt = ""; }
finally { m_DESProvider.Clear(); }
return m_strDecrypt;
}
/// <summary>
/// RC2 加密(用变长密钥对大量数据进行加密)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey">加密密钥</param>
/// <returns>returns</returns>
public static string RC2Encrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
if (EncryptKey.Length < 5 || EncryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }
string m_strEncrypt = "";
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btEncryptString, 0, m_btEncryptString.Length);
m_cstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_RC2Provider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// RC2 解密(用变长密钥对大量数据进行加密)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey">解密密钥</param>
/// <returns>returns</returns>
public static string RC2Decrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
if (DecryptKey.Length < 5 || DecryptKey.Length > 16) { throw (new Exception("密钥必须为5-16位")); }
byte[] m_btIV = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
string m_strDecrypt = "";
RC2CryptoServiceProvider m_RC2Provider = new RC2CryptoServiceProvider();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_cstream = new CryptoStream(m_stream, m_RC2Provider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_cstream.Write(m_btDecryptString, 0, m_btDecryptString.Length);
m_cstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_cstream.Close(); m_cstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_RC2Provider.Clear(); }
return m_strDecrypt;
}
/// <summary>
/// 3DES 加密(基于DES,对一块数据用三个不同的密钥进行三次加密,强度更高)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey1">密钥一</param>
/// <param name="EncryptKey2">密钥二</param>
/// <param name="EncryptKey3">密钥三</param>
/// <returns>returns</returns>
public static string DES3Encrypt(string EncryptString, string EncryptKey1, string EncryptKey2, string EncryptKey3) {
string m_strEncrypt = "";
try {
m_strEncrypt = DESEncrypt(EncryptString, EncryptKey3);
m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey2);
m_strEncrypt = DESEncrypt(m_strEncrypt, EncryptKey1);
}
catch (Exception ex) { throw ex; }
return m_strEncrypt;
}
/// <summary>
/// 3DES 解密(基于DES,对一块数据用三个不同的密钥进行三次加密,强度更高)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey1">密钥一</param>
/// <param name="DecryptKey2">密钥二</param>
/// <param name="DecryptKey3">密钥三</param>
/// <returns>returns</returns>
public static string DES3Decrypt(string DecryptString, string DecryptKey1, string DecryptKey2, string DecryptKey3) {
string m_strDecrypt = "";
try {
m_strDecrypt = DESDecrypt(DecryptString, DecryptKey1);
m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey2);
m_strDecrypt = DESDecrypt(m_strDecrypt, DecryptKey3);
}
catch (Exception ex) { throw ex; }
return m_strDecrypt;
}
/// <summary>
/// AES 加密(高级加密标准,是下一代的加密算法标准,速度快,安全级别高,目前 AES 标准的一个实现是 Rijndael 算法)
/// </summary>
/// <param name="EncryptString">待加密密文</param>
/// <param name="EncryptKey">加密密钥</param>
/// <returns></returns>
public static string AESEncrypt(string EncryptString, string EncryptKey) {
if (string.IsNullOrEmpty(EncryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(EncryptKey)) { throw (new Exception("密钥不得为空")); }
string m_strEncrypt = "";
byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael m_AESProvider = Rijndael.Create();
try {
byte[] m_btEncryptString = Encoding.Default.GetBytes(EncryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateEncryptor(Encoding.Default.GetBytes(EncryptKey), m_btIV), CryptoStreamMode.Write);
m_csstream.Write(m_btEncryptString, 0, m_btEncryptString.Length); m_csstream.FlushFinalBlock();
m_strEncrypt = Convert.ToBase64String(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_csstream.Close(); m_csstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_AESProvider.Clear(); }
return m_strEncrypt;
}
/// <summary>
/// AES 解密(高级加密标准,是下一代的加密算法标准,速度快,安全级别高,目前 AES 标准的一个实现是 Rijndael 算法)
/// </summary>
/// <param name="DecryptString">待解密密文</param>
/// <param name="DecryptKey">解密密钥</param>
/// <returns></returns>
public static string AESDecrypt(string DecryptString, string DecryptKey) {
if (string.IsNullOrEmpty(DecryptString)) { throw (new Exception("密文不得为空")); }
if (string.IsNullOrEmpty(DecryptKey)) { throw (new Exception("密钥不得为空")); }
string m_strDecrypt = "";
byte[] m_btIV = Convert.FromBase64String("Rkb4jvUy/ye7Cd7k89QQgQ==");
Rijndael m_AESProvider = Rijndael.Create();
try {
byte[] m_btDecryptString = Convert.FromBase64String(DecryptString);
MemoryStream m_stream = new MemoryStream();
CryptoStream m_csstream = new CryptoStream(m_stream, m_AESProvider.CreateDecryptor(Encoding.Default.GetBytes(DecryptKey), m_btIV), CryptoStreamMode.Write);
m_csstream.Write(m_btDecryptString, 0, m_btDecryptString.Length); m_csstream.FlushFinalBlock();
m_strDecrypt = Encoding.Default.GetString(m_stream.ToArray());
m_stream.Close(); m_stream.Dispose();
m_csstream.Close(); m_csstream.Dispose();
}
catch (IOException ex) { throw ex; }
catch (CryptographicException ex) { throw ex; }
catch (ArgumentException ex) { throw ex; }
catch (Exception ex) { throw ex; }
finally { m_AESProvider.Clear(); }
return m_strDecrypt;
} }
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